Depth

cm(ft)

or Zone

Description

0-42 (0-1.4)

Acum

very dark brown to dark brown (10YR2/2-3/3) silt loam; weak, fine, subangular blocky to platy (fractures along bedding planes); friable; slightly to strongly effervescent; clear lower boundary; rootlets; fresh sand on surface; bedded layers of silts; several thin sand lenses (<1 cm thick).

42-48 (1.4-1.6)

C

dark brown (10YR3/3) silt loam and brown (10YR5/3) fine to medium sand; massive; very friable; strongly to violently effervescent; abrupt lower boundary; laminated; thin sand lenses; sand lens from 46 to 48 cm.

48-54 (1.6-1.8)

2ACb

very dark brown (10YR2/2) silt loam; mottles are few, faint, fine, dark brown (7.5YR3/4); weak to moderate, fine, subangular blocky to platy; friable; strongly to violently effervescent; abrupt lower boundary; crude bedding visible.

54-78 (1.8-2.6)

2C

very dark brown (10YR2/2) silt loam and brown (10YR5/3) fine to medium sand; massive; very friable; violently effervescent; clear lower boundary; interbedded silts and fine to medium sands; sand lens from 54-60 cm; horizon disturbed in coring.

78-83 (2.6-2.7)

3ACb

black to very dark brown (10YR2/1-2/2) silt loam; very weak, fine, subangular blocky; friable; strongly effervescent; clear lower boundary (change in structure); crude bedding.

83-94 (2.7-3.1)

3C

black to very dark brown (10YR2/1-2/2) silt loam; massive; friable; slightly effervescent; unknown lower boundary (end of tubes); laminated silts; gastropod shell; fractured (appears blocky); very few pebbles.

94-185 (3.1-6.1)

no recovery; refused.

Auger Samples:

185-320 (6.1-10.5)

very dark grayish brown (10YR3/2) loamy sand and gravel; strongly to violently effervescent; approximately 50% rounded pebbles.

435-570 (10.5-18.7)

yellowish brown (10YR5/4) loamy sand and gravel; violently effervescent; not as gravelly as sample from 185-320 cm; distinct change in color; rounded pebbles/coarse sand.

Depth

cm(ft)

or Zone

Description

0-22 (0-.7)

Ap

very dark grayish brown (10YR3/2) loam; moderate, coarse, granular to platy; friable; slightly effervescent; clear lower boundary; rootlets.

22-32 (.7-1.1)

A1

very dark brown (10YR2/2) loam; weak, fine, granular; friable; slightly effervescent; gradual lower boundary; rootlets; sand is fine, bordering on coarse silt.

32-42 (1.1-1.4)

A2

black (10YR2/1) loam; weak, medium, subangular blocky; friable; strongly effervescent; abrupt lower boundary; sand is fine, bordering on coarse silt; rootlets.

42-54 (1.4-1.8)

AC

very dark brown (10YR2/2) loamy fine sand; single grain; very friable; strongly to violently effervescent; abrupt lower boundary; many shall fragments; several intact gastropod shells (up to 2 cm in diameter); rootlets.

54-71 (1.8-2.3)

2Ab

black (10YR2/1) loam; weak, fine to medium, subangular blocky; friable; strongly effervescent; clear lower boundary; mollusk shells.

71-75 (2.3-2.5)

2C1

brown (10YR5/3) silt loam; massive; very friable; slightly effervescent; clear lower boundary; bedded fine sediments (silt mainly); <1 mm thick.

75-101 (2.5-3.3)

2C2

dark brown (10YR3/3) loamy sand; single grain; very friable; strongly effervescent; clear lower boundary; lenses of bedded silt loam; horizon was disturbed in coring; several pebbles; gastropod shells; 7 cm inferred (no recovery).

101-126 (3.3-4.1)

3ACb

very dark grayish brown (10YR3/2) loam; massive to weak, fine, subangular blocky; friable; strongly effervescent; clear lower boundary; crude bedding evident; 8 cm inferred (no recovery).

126-182 (4.1-6.0)

3C1

very dark grayish brown (10YR3/2) loamy sand; massive; friable; violently effervescent; gradual lower boundary; gastropod shells; few rootlets; shell fragments.

182-223 (6.0-7.3)

3C2

very dark gray (10YR3/1) loamy sand to fine sand; mottles are common, faint, fine, dark brown (7.5YR3/4); massive; friable; violently effervescent; abrupt lower boundary; gastropod shells, especially numerous from 208-212 cm; wood/root sampled at 222 cm; rootlets.

223-231 (7.3-7.6)

4C3

light brownish gray (10YR6/2) coarse sand and gravel; single grain; loose; violently effervescent; unknown lower boundary (end of tubes); large pebbles (up to 4 cm in diameter).

231-244 (7.6-8.0)

no recovery; refused on coarse sand.

Auger Samples:

359-494 (11.8-16.2)

brown to dark brown (10YR4/3) coarse sand and gravel; strongly to violently effervescent; many rounded pebbles, up to 4 cm in diameter; mollusk shells.

564-699 (18.5-22.9)

dark yellowish brown (10YR4/4) loamy sand and gravel; violently effervescent; many rounded pebbles, several up to 4 cm in diameter.

Depth

cm(ft)

or Zone

Description

0-18 (0-.6)

Ap1

black (10YR2/1) sandy loam to silt loam; moderate, coarse, granular; friable; strongly effervescent; abrupt lower boundary; rootlets; sand is very fine, bordering on coarse silt.

18-32 (.6-1.1)

Ap2

black (10YR2/1) sandy loam; massive; friable; violently effervescent; gradual lower boundary; many large pebbles (up to 6 cm); few rootlets; compacted.

32-74 (1.1-2.4)

AC

very dark brown (10YR2/2) sandy loam; massive; friable; violently effervescent; abrupt lower boundary; gastropod and mollusk shells.

74-124 (2.4-4.1)

no recovery.

124-139 (4.1-4.6)

C1

very dark grayish brown (10YR3/2) sandy loam; massive; friable; violently effervescent; clear lower boundary; many large pebbles (up to 5 cm), mostly rounded.

139-168 (4.6-5.5)

C2

very dark grayish brown (10YR3/2) sandy loam; few, medium to fine, faint, dark reddish brown (5YR3/3); massive; friable to firm; violently effervescent; abrupt lower boundary; many gastropod shells; some mollusk shells; bedding evident; few sand lenses (<1 cm thick) near base; few pebbles at top of unit.

168-212 (5.5-7.0)

2C3

grayish brown (10YR5/2) fine to medium sand; single grain; loose; slightly effervescent - strong at base; unknown lower boundary (end of tubes); bands with varying degrees of oxidation; few shell fragments; 19 cm inferred (no recovery); refused on sand and gravel.

Auger Sample:

212-259 (7.0-8.5)

brown to dark brown (10YR4/3) medium sand and gravel; violently effervescent; mostly sand; some pebbles; many shell fragments.

Depth

cm(ft)

or Zone

Description

0-9 (0-.3)

Ap1

black (10YR2/1) sandy loam; weak, coarse, granular to platy; friable; slightly to strongly effervescent; abrupt lower boundary; rootlets; shell fragments.

9-17 (.3-.6)

Ap2

black (10YR2/1) sandy loam; massive; friable; strongly effervescent; clear lower boundary; many large pebbles (up to 5 cm in diameter).

17-61 (.6-2.0)

AC

black (10YR2/1) sandy loam to loamy sand; massive to single grain; loose; strongly to violently effervescent; clear lower boundary; few rootlets.

61-271 (2.0-8.9)

C1

very dark gray (10YR3/1) sandy loam; massive; friable; violently effervescent; abrupt lower boundary; bedding evident; several black bands (approx. 1 mm thick); many shell fragments; mollusk shells; large pebbles/small cobbles at 255-267 cm, 61-63 cm; no recovery from 67 to 127 cm, 146 to 254 cm.

271-278 (8.9-9.1)

C2

brown to dark brown to dark grayish brown (10YR4/3-4/2) fine sand; single grain; loose; violently effervescent; abrupt lower boundary; sand lens.

278-300 (9.1-9.8)

C3

very dark grayish brown (10YR3/2) sandy loam; massive; friable; violently effervescent; abrupt lower boundary; many shell fragments; mollusk and gastropod shells; few pebbles; sand is medium to coarse.

300-318 (9.8-10.4)

2C4

dark grayish brown (10YR4/2) medium sand and gravel; single grain; loose; violently effervescent; unknown lower boundary (end of tubes); several large pebbles/small cobbles (6-7 cm in diameter); crude bedding; 7 cm inferred (no recovery); refused on coarse sand and gravel.

Auger Samples:

425-560 (13.9-18.4)

pale brown to brown (10YR6/3-5/3) sand and gravel; violently effervescent; poor recovery; auguring was rough; many pebbles.

592-727 (19.4-23.9)

brown (10YR5/3) sand and gravel; violently effervescent; sand is fine to coarse; many pebbles; auguring was very rough; refused on large cobbles/boulder.

Depth

cm(ft)

or Zone

Description

0-16 (0-.5)

Ap

black (10YR2/1) sandy loam to silt loam; weak, coarse, granular to weak platy; friable; slightly effervescent; clear lower boundary; sand is very fine, bordering on coarse silt; rootlets.

16-45 (.5-1.5)

A

very dark brown (10YR2/2) sandy loam; very weak subangular blocky to massive; friable; slightly effervescent; clear lower boundary; sand is fine, bordering on coarse silt; rootlets; a few silt lenses (lighter brown) near base.

45-60 (1.5-2.0)

AB1

black to very dark grayish brown (10YR2/1-3/2) sandy loam; weak to moderate, fine, subangular blocky; friable; slightly effervescent; clear lower boundary; sand is fine, bordering on coarse silt; rootlets; very few pebbles.

60-75 (2.0-2.5)

AB2

black (10YR2/1) sandy loam; weak, fine, subangular blocky; very friable; slightly to strongly effervescent at base; unknown lower boundary (end of tubes); many large pebbles/small cobbles (6-7 cm in diameter) at base; rootlets.

75-94 (2.5-3.1)

no recovery; refused on boulder.

Auger Samples:

119-254 (3.9-8.3)

very dark brown (10YR2/2) sandy loam; friable to firm; slightly to strongly effervescent; many shell fragments; few rounded pebbles.

363-498 (11.9-16.3)

very dark brown (10YR2/2) loamy sand and gravel; slightly to strongly effervescent; many shell fragments; mollusk shells; many small, rounded pebbles.

567-702 (18.6-23.0)

light yellowish brown to yellowish brown (10YR6/4-5/4) loamy sand and gravel; strongly effervescent; some pebbles; some fines in matrix; sand is medium to coarse.

Depth

cm(ft)

or Zone

Description

0-13 (0-.4)

Ap

black (10YR2/1) sandy loam; moderate, medium, granular; friable; slightly to strongly effervescent; abrupt lower boundary; rootlets; few pebbles; silt lens near base of horizon; sand is very fine, bordering on coarse silt.

13-30 (.4-1.0)

AC1

black (10YR2/1) sandy loam; weak, fine, granular; very friable; strongly to violently effervescent; clear lower boundary; very rocky; many pebbles and some small cobbles, rounded and angular; rootlets.

30-145 (1.0-4.8)

AC2

very dark brown (10YR2/2) sandy loam; massive; friable; violently effervescent; clear lower boundary; very rocky; many pebbles and small cobbles, rounded and angular.

145-152 (4.8-5.0)

C1

very dark grayish brown (10YR3/2) medium to coarse sand; single grain; loose; violently effervescent; abrupt lower boundary; sand lens.

152-167 (5.0-5.5)

2C2

very dark grayish brown (10YR3/2) loam; massive; friable; strongly effervescent; unknown lower boundary (end of tube); many rounded pebbles; mollusk shells.

167-254 (5.5-8.3)

no recovery.

254-265 (8.3-8.7)

3CA

very dark grayish brown (10YR3/2) loam to sandy loam; mottles are coarse, few, distinct, dark gray (10YR4/1) bands; massive; clay coatings are distinct, many, coat pebble holes; friable; strongly effervescent; abrupt lower boundary; laminated at base of horizon; rootlets, plant material; gray and black bands (approx. 1 cm thick); cobbles, rounded and angular; sandier near base; may be depositional.

265-273 (8.7-9.0)

3C

grayish brown to light grayish brown (10YR5/2-6/2) medium sand; single grain; loose; very slightly effervescent; abrupt lower boundary; sand lens; bands of oxidation at base.

273-292 (9.0-9.6)

4OCb

black (10YR2/1) silt loam; massive; friable; slightly to strongly effervescent; abrupt lower boundary; buried muck; bits of plant matter; sand lenses at 283-284 cm, 287 cm; few small, rounded pebbles; rootlets; shell fragments; plant matter collected from 288-290 cm, 276-284 cm; seeds of cf. Betulaceae, Chamaesyce nutans, Chenopodium sp., Cyperaceae from 276-284 cm C-14 dated at 3710±50 BP.

292-300 (9.6-9.8)

5C

dark yellowish brown (10YR3/6) coarse sand and gravel; single grain; loose; strongly effervescent; unknown lower boundary (end of tubes); many rounded pebbles; few cobbles; bands of differing degrees of oxidation.

300-328 (9.8-10.8)

no recovery; refused on cobbles.

Depth

cm(ft)

or Zone

Description

0-40 (0-1.3)

Ap

black (10YR2/1) silt loam; platy; firm; slightly effervescent; clear lower boundary; top 5 cm - fresh sand, overbank deposit; compacted; roots.

40-95 (1.3-3.1)

A

black (10YR2/1) silt loam; moderate, medium to coarse, granular; friable; slightly effervescent; gradual lower boundary; rootlets.

95-171 (3.1-5.6)

AC

very dark grayish brown (10YR3/2) silt loam; weak, medium, subangular blocky to massive; friable; slightly to strongly effervescent; gradual lower boundary; band of black (10YR2/1) silt loam, 167-171 cm; shell fragments; gastropod shells; 9 cm inferred (no recovery)

171-310 (5.6-10.2)

C

very dark grayish brown (10YR3/2) silt loam to sandy loam; massive; friable; strongly effervescent; gradual lower boundary; shell fragments; gastropod shells; sand concretions(?) from 237-242 cm; crude bedding; rootlets; few sand lenses; sandier with depth; sand is fine; 5 cm inferred (no recovery).

310-365 (10.2-12.0)

Cg

very dark gray (10YR3/1) sandy loam; mottles are common, fine, faint, dark yellowish brown (10YR3/4) near the base of the horizon; massive; friable; slightly effervescent; gradual lower boundary; lenses of loamy sand; shell fragments; gastropod shells.

365-381 (12.0-12.5)

2C

grayish brown (10YR5/2) fine to medium sand; mottles are few, coarse, distinct, dark brown (7.5YR3/4) bands of oxidation; single grain; loose; slightly effervescent; unknown lower boundary (end of tubes); shell fragments; lenses of sandy loam; gastropod shells; rootlets; few small pebbles.

381-409 (12.5-13.4)

no recovery; driller’s notes: "felt like...medium-coarse gravel."

Auger Samples:

488-623 (16.0-20.4)

dark grayish brown (10YR4/2) medium sand; slightly effervescent; shell fragments; few small pebbles; similar to 2C horizon.

733-868 (24.1-28.5)

brown to dark brown (10YR4/3) medium to coarse sand; slightly effervescent; very few shell fragments; many small pebbles.

923-1,058 (30.3-34.7)

yellowish brown (10YR5/4) medium to coarse sand; slightly effervescent; few shell fragments; small pebbles common.

Depth

cm(ft)

or Zone

Description

0-7 (0-.2)

Acum

black (10YR2/1) silt loam; weak, medium, granular to massive; friable; noneffervescent; abrupt lower boundary; bedded; roots common; layer of light-colored silt at base; silt is coarse.

7-32 (.2-1.1)

Ap

black (10YR2/1) silt loam; weak, coarse, subangular blocky to platy; firm; noneffervescent; clear lower boundary; compacted; rootlets.

32-85 (1.1-2.8)

A

black (10YR2/1) sandy loam; weak, fine to medium, granular; friable; noneffervescent; gradual lower boundary; rootlets; several large (2 cm in diameter) roots; sand is very fine; 10 cm inferred (no recovery).

85-178 (2.8-5.8)

AB

black (10YR2/1) silt loam; weak to moderate, medium, subangular blocky; friable to firm; noneffervescent; diffuse lower boundary; rootlets; 13 cm inferred (no recovery).

178-210 (5.8-6.9)

CB

very dark grayish brown to very dark brown (10YR3/2-2/2) silt loam to silty clay loam; massive; friable to firm; noneffervescent; clear lower boundary; rootlets; shell fragments; gastropod shells.

210-220 (6.9-7.2)

2Ab

black (10YR2/1) silty clay loam; mottles are common, faint, fine, dark brown (10YR3/3); moderate, fine, granular; friable to firm; very slightly effervescent; clear lower boundary; rootlets; horizon disturbed in coring.

220-233 (7.2-7.6)

2ACb

dark brown (10YR3/3) silt loam to silty clay loam; mottles are common, faint, fine, black (10YR2/1); massive; friable to firm; very slightly effervescent; gradual lower boundary; horizon disturbed in coring; rootlets.

233-313 (7.6-10.3)

2C

dark yellowish brown (10YR4/4) fine sand; mottles are common, faint, fine to coarse, very dark grayish brown (10YR3/2); massive; very friable; slightly effervescent; abrupt, irregular lower boundary; roots; rootlets; several bands of loamy sand (very dark grayish brown [10YR3/2]); 5 cm inferred (no recovery).

313-349 (10.3-11.5)

3ACb

349-403 (11.5-13.2)

4C

yellowish brown (10YR5/4) fine sand; single grain; loose; very slightly effervescent; unknown lower boundary (end of tubes); few clasts of black silt loam; shell fragments; gastropod shells.

403-427 (13.2-14.0)

Auger Samples:

489-624 (16.0-20.5)

dark grayish brown (10YR4/2) fine sand to loamy sand; slightly effervescent; very few pebbles; few shell fragments.

734-869 (24.1-28.5)

yellowish brown (10YR5/4-5/6) fine sand; slightly effervescent; shell fragments; no pebbles.

Depth

cm(ft)

or Zone

Description

0-51 (0-1.7)

C

very dark grayish brown (10YR3/2) silt loam to sandy loam; massive; very friable; noneffervescent; abrupt lower boundary; recent ditch deposits; bedded; thin (1 mm) light and dark laminations - irregular; rootlets; silt is very coarse, bordering on fine sand.

51-72 (1.7-2.4)

2Acum

black to very dark brown (10YR2/1-2/2) silt loam; massive to weak, coarse, granular; very friable; noneffervescent; abrupt lower boundary; crude bedding, more evident near base.

72-118 (2.4-3.9)

3Ab

black (10YR2/1) silt loam; mottles are very few, fine, faint, black (10YR2/1), fill root void and worm burrows; weak, medium to coarse granular; very friable; noneffervescent; gradual lower boundary..

118-176 (3.9-5.8)

3CBb

176-314 (5.8-10.3)

3C1

dark brown (10YR3/3) sandy loam; mottles are very few, faint, coarse, brown to dark brown (10YR4/3); massive structure (some fracturing); friable; noneffervescent; gradual lower boundary; sand is very fine, bordering on coarse silt; 5 cm inferred (no recovery).

314-406 (10.3-13.3)

3C2

dark brown (10YR3/3) sandy loam; mottles are common, medium, distinct, gray (10YR5/1) and yellowish brown (10YR5/4); massive; friable to firm; noneffervescent; clear lower boundary; sand is very fine, bordering on coarse silt; several small (<5 mm) voids lined with sand grains; 9 cm inferred (no recovery).

406-454 (13.3-14.9)

3C3

dark brown (10YR3/3) silty clay loam; mottles are common, medium, distinct, gray (10YR5/1) and common, fine, distinct, dark brown (7.5YR3/2); massive; firm; noneffervescent; clear lower boundary; silt is coarse; some fracturing (parallel fractures).

454-515 (14.9-16.9)

3Cg

dark gray (10YR4/1) sandy loam; mottles are few, coarse, faint, dark brown (7.5YR3/4), and few, distinct, fine, light gray (10YR7/2); massive; firm; very slightly effervescent; clear lower boundary; sand is very fine; few rootlets; 11 cm inferred (no recovery).

515-528 (16.9-17.3)

4Ob

black (10YR2/1) mucky silt loam; massive; friable to firm; slightly effervescent; clear lower boundary; silt is coarse; plant matter including roots, seeds, and wood throughout; collected from 516 to 522 cm, 526-528 cm; seeds of cf. Betulaceae and Najas sp. From 526-528 cm C-14 dated at 4,960±60 BP..

528-536 (17.3-17.6)

4OCb

black (10YR2/1) loam; massive; friable; strongly effervescent; unknown lower boundary (end of tubes); sand is medium; few rootlets.

536-561 (17.6-18.4)

no recovery; refused on sand and gravel.

Depth

cm(ft)

or Zone

Description

0-44 (0-1.4)

C1

yellowish brown (10YR5/4) and dark brown (10YR3/3) silt loam; massive structure (fractures along bedding planes); very friable; noneffervescent; clear lower boundary; bedded fine sediments (silts); laminations are often 1 mm thick and alternate between light and dark - some are sandier than others; recent ditch sediments.

44-66 (1.4-2.2)

C2

dark brown (10YR3/3) silt loam; massive structure (fractures along bedding planes); very friable; very slightly effervescent; clear lower boundary; less bedded, but still evident; recent ditch sediments.

66-97 (2.2-3.2)

2Ab

very dark gray (10YR3/1) silt loam to silty clay loam; mottles are common, faint, medium, dark reddish brown (5YR3/2); moderate angular blocky structure (may be fracturing) friable; noneffervescent; abrupt lower boundary; highly fractured, blocky; compacted.

97-117 (3.2-3.8)

2ACb

dark brown (10YR3/3) silt loam; mottles are many, faint, fine, very dark gray to black (10YR3/1-2/1); weak, medium, subangular blocky structure (may be fracturing); very friable; noneffervescent; clear lower boundary.

117-153 (3.8-5.0)

2C1

brown to dark brown (10YR4/3) silt loam; mottles are few, faint, fine, very dark gray (10YR3/1), fill worm burrows and root voids; massive; clay coatings are few, distinct, line root voids; friable; slightly effervescent; gradual lower boundary; 3 cm inferred (no recovery).

153-189 (5.0-6.2)

2C2

dark brown (10YR3/3) silt loam; massive; clay coatings are few, faint, line root voids; friable; noneffervescent; abrupt lower boundary; gastropod shells.

189-204 (6.2-6.7)

3Ab

black (10YR2/1) silty clay loam; moderate, fine to medium, granular; firm; noneffervescent; clear lower boundary; horizon disturbed in coring.

204-219 (6.7-7.2)

3ACb

dark brown (10YR3/3) loam; massive; friable to firm; noneffervescent; clear lower boundary; horizon disturbed in coring.

219-314 (7.2-10.3)

4Ab

black (10YR2/1) clay loam to silty clay loam; weak to medium, fine, subangular blocky; clay coatings are few, faint, line root voids; firm; noneffervescent; diffuse lower boundary; 6 cm inferred (no recovery).

314-396 (10.3-13.0)

4Cg

very dark grayish brown (10YR3/2) silty clay loam; mottles are common, faint, very fine, dark yellowish brown (10YR4/4-4/6); massive; firm; noneffervescent; unknown lower boundary (end of tubes); sandstone pebbles last 20 cm.

396-424 (13.0-13.9)

no recovery; refused on gravel.

Auger Sample:

424-470 (13.9-15.4)

dark yellowish brown (10YR4/6) sandy loam; noneffervescent; few pebbles.

Depth

cm(ft)

or Zone

Description

0-16 (0-.5)

C

black (10YR2/1) fine sand; single grain; loose; strongly effervescent; abrupt lower boundary; many rounded pebbles 1-3 cm in diameter; rootlets; wood; recent deposit.

16-38 (.5-1.3)

2Ap

black (10YR2/1) silt loam to loam; medium, coarse, platy; friable; very slight to slightly effervescent; abrupt lower boundary; large root at base of horizon; very compacted; rootlets.

38-52 (1.3-1.7)

2AC1

black (10YR2/1) sandy loam; weak, fine, subangular blocky to massive; very friable; strongly effervescent; gradual lower boundary; crude bedding; shell fragments; few rootlets.

52-127 (1.7-4.2)

no recovery.

127-160 (4.2-5.3)

2AC2

very dark brown (10YR2/2) sandy loam; weak, medium, subangular blocky; very friable; violently effervescent; diffuse lower boundary; shell fragments; sand is fine to massive; gastropod shells; few small pebbles; few rootlets.

160-227 (5.3-7.5)

2C1

very dark grayish brown to dark brown (10YR3/2-3/3) sandy loam; massive to single grain; very friable to loose; violently effervescent; gradual lower boundary; shell fragments; gastropod shells; sand is fine.

227-255 (7.5-8.4)

no recovery.

255-320 (8.4-10.5)

2C2

very dark grayish brown to very dark gray (10YR3/2-3/1) loam; mottles are few, distinct, medium, dark reddish brown (5YR3/3); massive; friable; strongly effervescent; abrupt lower boundary; gastropod and mollusk shells; more mottled near base; charcoal collected at 285 to 286 cm.

320-443 (10.5-14.5)

3C3

brown to dark brown (10YR4/3) fine to medium sand; single grain; loose; strongly effervescent; unknown lower boundary (end of tubes); clumps of finer sand/silt mixed into unit - these clumps are very dark grayish brown ((10YR3/2); gastropod and mollusk shells; shell fragments; bedded at base; charcoal collected at 431 cm; layer of shells at 333 cm; 14 cm inferred (no recovery); rounded pebbles.

443-481 (14.5-15.8)

no recovery; refused on gravel.

Depth

cm(ft)

or Zone

Description

0-18 (0-.6)

Ap

very dark grayish brown (10YR3/2) silt loam; moderate, medium to coarse, platy; friable; noneffervescent; clear lower boundary; cumulic horizon; worm burrows; slightly darker brown at top.

18-98 (.6-3.2)

2A

black (10YR2/1) loam; weak, medium, granular; very friable; noneffervescent; gradual lower boundary; slightly platy - may be related to tractor compaction; structure is more massive near base; rootlets.

98-109 (3.2-3.6)

2AC

black (10YR2/1) loamy sand; massive to single grain; loose; noneffervescent; abrupt lower boundary (color change); sand is fine to medium.

109-137 (3.6-4.5)

2C1

very dark grayish brown (10YR3/2) fine to medium sand; single grain; loose; noneffervescent; abrupt lower boundary (color change); 5 cm inferred (no recovery).

137-194 (4.5-6.4)

2C2

brown (10YR5/3) fine to coarse sand; single grain; loose; very slightly effervescent near base; unknown lower boundary (end of tubes); sand coarsens with depth; few small pebbles near base; few shell fragments; 17 cm inferred (no recovery); refused on coarse sand.

Auger Sample:

194-304 (6.4-10.0)

pale brown (10YR6/3) fine to coarse sand; strongly effervescent; many rounded pebbles.

Depth

cm(ft)

or Zone

Description

0-9 (0-.3)

Ap

very dark brown (10YR2/2) silt loam; weak, fine, granular to moderate platy; friable; noneffervescent; abrupt lower boundary; roots.

9-53 (.3-1.7)

C

dark brown (10YR3/3) silt loam; massive structure (fractures along bedding planes); very friable; noneffervescent; clear lower boundary; laminated; rootlets; worm burrows; recent deposits.

53-110 (1.7-3.6)

2Ab

black (10YR2/1) silt loam; weak, coarse, granular to weak, medium, platy; friable; noneffervescent; gradual lower boundary; upper surface mixed with base of C horizon for 5 cm.

110-143 (3.6-4.7)

2ABb

black (10YR2/1) silt loam; moderate, fine, subangular blocky to coarse granular; friable; noneffervescent; gradual lower boundary; feels compacted; slightly hard to hard when dry; 5 cm inferred (no recovery).

143-197 (4.7-6.5)

2Btbl

very dark brown (10YR2/2) clay-rich silt loam; mottles are very fine, few, faint, dark grayish brown (10YR4/2); weak, coarse, columnar; clay and silt coatings are discontinuous, thin, coat ped faces; friable to firm; noneffervescent; gradual lower boundary; hard when dry.

197-240 (6.5-7.9)

2Btb2

dark yellowish brown (10YR4/4) clay-rich silt loam; moderate, medium, columnar; clay and silt coatings are continuous, thick, coat ped faces; friable to firm; noneffervescent; clear lower boundary; oxidized.

240-308 (7.9-10.1)

2C1

dark yellowish brown (10YR4/4) silt loam; mottles are slightly lighter and darker shades of brown mixed together; massive; clay coatings are few, distinct, coat root voids; friable; noneffervescent; gradual lower boundary; oxidized; laminated; 6 cm inferred (no recovery).

308-424 (10.1-13.9)

2C2

grayish brown (10YR5/2) silt loam; mottles are common, fine to medium, faint to distinct, dark brown to brown (7.5YR4/4) to dark reddish brown (5YR3/3); friable; noneffervescent; clear lower boundary; laminated; 9 cm inferred (no recovery).

424-445 (13.9-14.6)

2C3

grayish brown (10YR5/2) silt loam; mottles are few, distinct, medium, yellowish red (5YR4/6); massive; friable to firm; noneffervescent; clear lower boundary; coarse silt; transition layer from 2C2 to 3C4.

445-514 (14.6-16.9)

3C4

grayish brown (10YR5/2) silt loam and fine sand; massive; friable; slightly effervescent; abrupt lower boundary; coarse silt with thin (1 cm) lenses of fine sand; shell fragments; laminated; few infilled root voids; transition layer from 2C3 to 4C5; 13 cm inferred (no recovery).

514-532 (16.9-17.5)

4C5

dark yellowish brown (10YR3/4) medium sand; single grain; loose; very slightly effervescent; unknown lower boundary (end of tubes); few angular pebbles near base; several thin (3 mm) bands of gray silt loam; 3 cm inferred (no recovery); refused on coarse sand.

Depth

cm(ft)

or Zone

Description

0-10 (0-.3)

Ap1

black (10YR2/1) silt loam; moderate, coarse, platy; friable; noneffervescent; abrupt lower boundary; rootlets; compacted.

10-32 (.3-1.1)

Ap2

very dark brown (10YR2/2) silt loam; moderate, fine, subangular blocky; friable; noneffervescent; abrupt lower boundary; rootlets, compacted.

32-80 (1.1-2.6)

BA

very dark grayish brown (10YR3/2) silt loam; mottles are common, fine, faint, light brownish gray (10YR6/2); weak to moderate, medium, columnar; clay and silt coatings are moderately continuous, thin, coat ped faces; friable; noneffervescent; gradual lower boundary; few rootlets.

80-135 (2.6-4.4)

Bt

dark yellowish brown (10YR4/4) silt loam; mottles are common, coarse, faint, light brownish gray (10YR6/2); moderate, medium to coarse, columnar; clay and silt coatings are continuous, moderately thick, coat ped faces; friable; noneffervescent; gradual lower boundary; very few rootlets; 5 cm inferred (no recovery).

135-170 (4.4-5.6)

CB

dark brown to brown (10YR4/3) silt loam; mottles are common, faint, medium, pale brown (10YR6/3); massive to weak, coarse, subangular blocky; clay and silt coatings are discontinuous, thin, coat horizontal planes (ped faces?); very friable; noneffervescent; gradual lower boundary; few vertical rootlets; large (1 cm thick) horizontal root; crude bedding; oxidized.

170-279 (5.6-9.2)

C1

dark brown to brown (10YR4/3) silt loam to silt; mottles are common, faint, fine, strong brown (7.5YR4/6) to black (10YR2/1); massive; friable; noneffervescent; gradual lower boundary; laminated; silt is coarse; plant fibers in middle of horizon; charcoal, some patches of oxidation, especially in top half of horizon; 12 cm inferred (no recovery).

279-319 (9.2-10.5)

C2

dark grayish brown to dark gray (10YR4/2-4/1) silt loam; mottles are few, fine, distinct, dark reddish brown (5YR3/4); massive; friable to firm; noneffervescent; gradual lower boundary; laminated - less noticeable than C1; more clay than C1; silt is coarse; some fracturing.

319-360 (10.5-11.8)

2C3

grayish brown (10YR5/2) silt loam and fine to medium sand; mottles are few, faint, fine, dark yellowish brown (10YR4/4); massive to single grain; very friable to loose; slightly effervescent; abrupt lower boundary; interbedded lenses of fine sand (dark yellowish brown [10YR4/6]) in a silt loam matrix; shell fragments; bits of oxidized plant matter; gastropod shell collected.

360-381 (11.8-12.5)

3C4

dark yellowish brown (10YR4/6) fine to medium sand and gravel; single grain; loose; strongly effervescent; unknown lower boundary (end of tubes); many angular pebbles; sand is oxidized; 13 cm inferred (no recovery); refused on sand and gravel.

Auger Sample:

410-545 (13.5-17.9)

light yellowish brown (10YR6/4) loamy sand and gravel; violently effervescent; many angular pebbles; sand is medium to coarse.

Depth

cm(ft)

or Zone

Description

0-31 (0-1.0)

Ap

black (10YR2/1) silt loam; moderate, medium, platy; friable; noneffervescent; clear lower boundary; rootlets; compacted; worm burrows infilled with lighter brown sediment.

31-72 (1.0-2.4)

A

black (10YR2/1) silt loam; weak, medium, granular; friable; noneffervescent; clear lower boundary; rootlets.

72-84 (2.4-2.8)

AB

dark brown (10YR3/3) silt loam; mottles are very fine, common, faint, very dark brown (10YR2/2), and very fine, few, faint, brown (10YR5/3); weak, fine, subangular blocky; friable; noneffervescent; clear lower boundary.

84-104 (2.8-3.4)

BE

dark brown (10YR3/3) silt loam; mottles are common, fine, faint to distinct, pale brown (10YR7/2); weak to medium, fine, subangular blocky; clay and silt coatings are thin, discontinuous, coat ped faces; friable; noneffervescent; clear lower boundary.

104-163 (3.4-5.4)

Bt

dark yellowish brown (10YR3/4) silt loam; mottles are common, fine, faint to distinct, black (10YR2/1) and very pale brown (10YR7/2); moderate, medium, prismatic parting to weak, fine, subangular blocky; clay and silt coatings are continuous, distinct, coat ped faces; friable; noneffervescent; diffuse lower boundary (prismatic structure may extend further down, but it is too coarse to detect); voids infilled with sediment (karst-like); surfaces (often vertical) coated with very pale brown (10YR7/2) silt; more clay-rich than other layers; 5 cm inferred (no recovery).

163-264 (5.4-8.7)

C1

dark yellowish brown (10YR4/4) sandy loam; mottles are common, fine, distinct to faint, very pale brown (10YR7/3) to yellowish brown (10YR5/4) with oxidation mottles near base; massive; clay coatings are few, distinct, coat pebble/root voids; friable; noneffervescent; gradual lower boundary; bedded; lens of black (10YR2/1) loam to silt loam at 156-160 cm - does not resemble buried soil; especially oxidized near base of unit - dark reddish brown (5YR3/3); 4 cm inferred (no recovery); sand is very fine.

264-402 (8.7-13.2)

C2

grayish brown to dark grayish brown (2.5Y5/2-4/2) loamy sand; mottles are many, fine, distinct, strong brown (7.5YR4/6) and often banded; massive; friable; noneffervescent; clear lower boundary; bedded; manganese (?) nodules; oxidized more in middle of unit; few thin (1 mm thick) layers of sand; sand is very fine, almost coarse silt; 22 cm inferred (no recovery).

402-446 (13.2-14.6)

2C3

grayish brown (10YR5/2) silt loam; mottles are few, medium, distinct, strong brown (7.5YR4/6); massive; friable; slightly effervescent; abrupt lower boundary; crude bedding; few shell fragments; fractured; silt is very coarse.

446-550 (14.6-18.0)

3C4

grayish brown (10YR5/2) fine sand and medium sand; mottles are common, medium, distinct, strong brown (7.5YR4/6) to dark red (5YR 3/6); massive and single grain; friable to loose; slightly effervescent; unknown lower boundary (end of tubes); grasses; many medium sand lenses; lenses are yellowish brown ((10YR5/4) and pale brown (10YR6/3), approximately 1-4 cm thick; gastropod shells; charcoal collected from 511 to 514 cm; 63 cm no recovery; refused on coarse sands.

Depth

cm(ft)

or Zone

Description

0-28 (0-.9)

Ap

black (10YR2/1) silt loam; moderate, medium, platy; friable; noneffervescent; abrupt lower boundary; roots; omnidirectional rootlets.

28-44 (.9-1.4)

AE

brown to dark brown (10YR4/3) silt loam; moderate, medium, granular and weak, medium, platy; clay and silt coatings are discontinuous, thin, coat ped faces; friable; noneffervescent; clear lower boundary; omnidirectional rootlets.

44-87 (1.4-2.9)

Bt1

dark brown to dark yellowish brown (10YR3/3-3/4) silt loam; mottles are many, distinct, fine, pale brown (10YR6/3); strong, medium, prismatic parting to fine angular blocky; clay and silt coatings are moderately continuous, coat ped faces; friable; noneffervescent; clear lower boundary; omnidirectional rootlets, oxidized; infilled root voids.

87-160 (2.9-5.3)

Bt2

dark yellowish brown (10YR4/4) silt loam; mottles are many, distinct, fine, pale brown (10YR6/3), and few, fine, distinct, very dark brown (10YR2/2); strong, medium, prismatic; clay and silt coatings are continuous, coat ped faces; friable; noneffervescent; clear lower boundary; omnidirectional rootlets; crude bedding; manganese nodules; silts infilling root voids; oxidized; 5 cm inferred (no recovery).

160-214 (5.3-7.0)

CB

dark yellowish brown (10YR4/4-4/6) silt loam; mottles are many, medium, faint to distinct, strong brown (7.5YR4/6) to yellowish brown (10YR5/6); massive structure (fractures along horizontal planes); clay coatings are discontinuous, thin, coat horizontal planes (ped faces?); friable; noneffervescent; clear lower boundary; oxidized; laminated; some manganese nodules; colluvially/alluvially reworked loess.

214-319 (7.0-10.5)

C1

brown to brown to dark brown (10YR5/3-4/3) silt loam; mottles are few, faint, fine to medium, very dark brown (10YR2/2); massive; friable; noneffervescent; clear lower boundary; laminated; pisolithic; coarse silt; pipestems (oxidized/infilled root voids); 5 cm inferred (no recovery); alluvially/colluvially reworked loess.

319-357 (10.5-11.7)

2C2

brown to grayish brown (10YR5/3-5/2) loamy sand and fine sand; mottles are many, coarse, faint to distinct, strong brown (7.5YR4/6) to dark brown (7.5YR3/4); massive to single grain; friable to loose; noneffervescent; unknown lower boundary (end of tube); interbedded sand lenses; lenses are often oxidized (strong brown (7.5YR4/6) to yellowish brown (10YR 5/4); weathered angular pebbles near base; angular bedding; more dense near base; alluvial/colluvial.

357-381 (11.7-12.5)

no recovery.

381-392 (12.5-12.9)

3C3

grayish brown (10YR5/2) very fine sand and gravel; massive to single grain; slightly effervescent; unknown lower boundary (end of tubes); small angular cobbles; many angular pebbles; very rocky; silt bonding many pebbles together; colluvial.

392-404 (12.9-13.3)

no recovery; refused on sand and small cobbles.

Depth

cm(ft)

or Zone

Description

0-7 (0-.2)

C

very dark grayish brown (10YR3/2) fine sand; single grain; loose; noneffervescent; abrupt lower boundary; roots; rootlets; stems; recent deposit.

7-32 (.2-1.1)

2Acum

very dark grayish brown (10YR3/2) silt and fine sand; platy structure (fractures along bedding planes); very friable to loose; noneffervescent; abrupt lower boundary; slightly darker shade at top - resembles buried surface; rootlets; buried stems at top; siltier near base; interbedded silts and sands; laminated.

32-74 (1.1-2.4)

2C

dark yellowish brown to brown (10YR4/4-5/3) fine to coarse sand and gravel; single grain; loose; noneffervescent; unknown lower boundary (end of tubes); many rounded and angular pebbles, small and large; greater concentration of pebbles near top of horizon.

74-100 (2.4-3.3)

no recovery; refused on gravel and sand.

Auger Samples:

146-281 (4.8-9.2)

yellowish brown (10YR5/4) coarse sand; noneffervescent; few small pebbles.

291-426 (9.5-14.0)

dark yellowish brown (10YR4/4) medium sand; noneffervescent.

531-666 (17.4-21.9)

dark yellowish brown (10YR4/4) medium sand; noneffervescent.

Depth

cm(ft)

or Zone

Description

0-16 (0-.5)

Acum

very dark brown (10YR2/2) loam; weak, medium, granular to massive; friable; noneffervescent; clear lower boundary; roots; laminated; sandier near base; hard when dry.

16-24 (.5-.8)

C1

dark brown (10YR3/3) fine sand; single grain; loose; noneffervescent; clear lower boundary; few rootlets.

24-44 (.8-1.4)

C2

dark brown (10YR3/3) fine sand and gravel; single grain; loose; slightly effervescent; unknown lower boundary (end of tubes); very rocky; many angular (few rounded) pebbles, small to large; many angular rock fragments <1 cm across,

44-54 (1.4-1.8)

no recovery; refused on cobbles.

Auger Samples:

171-306 (5.6-10.0)

dark yellowish brown (10YR4/4) medium sand; noneffervescent.

416-551 (13.7-18.1)

dark yellowish brown (10YR4/4) medium sand; noneffervescent.

Depth

cm(ft)

or Zone

Description

0-12 (0-.4)

A

very dark brown (10YR2/2) silt loam; weak, medium, granular; friable; noneffervescent; clear lower boundary; rootlets; roots; slightly platy.

12-43 (.4-1.4)

Acum

very dark brown (10YR2/2) silt loam; platy structure (fractures along bedding planes); friable; noneffervescent; abrupt lower boundary; laminated; worm burrows.

43-97 (1.4-3.2)

C

very dark gray (10YR3/1) and yellowish brown (10YR5/4) silt loam; mottles are few, fine, faint, dark red (10R3/6) in very dark gray layers; moderate, fine to medium, platy structure (fractures along bedding planes); friable; noneffervescent; clear lower boundary; alternating layers of very dark gray (10YR3/1) silt loam (platy and fractured) and yellowish brown (10YR5/4) silt loam (highly laminated); darker horizons from 43-53 cm, 72-78 cm, 82-89 cm; multiple deposits.

97-136 (3.2-4.5)

2ACb

black (10YR2/1) silt loam; mottles are common, distinct, fine to medium, dusky red (10R3/4) to dark reddish brown (2.5YR3/4); weak, fine, subangular blocky to massive; friable; noneffervescent; gradual lower boundary.

136-190 (4.5-6.2)

2C1

very dark grayish brown to black (10YR3/2-2/1) silt loam; mottles are common, distinct, medium, dusky red (10R3/4) to black (10YR2/1) and few, faint, medium, dark yellowish brown (10YR3/4); massive; silt coatings are few, faint, discontinuous, on horizontal planar surfaces (bedding planes); friable; very slightly effervescent; gradual lower boundary; laminated in places; root voids lined with dusky red (10R3/4) to black (10YR2/1) manganese (?) coatings; few thin (<1 mm) sand lenses; few rootlets; 5 cm inferred (no recovery).

190-229 (6.2-7.5)

2C2

very dark gray (10YR3/1) and brown (10YR5/3) silt loam and fine sand; mottles are few, distinct, fine, dark yellowish brown (10YR3/4) to dark reddish brown (2.5YR2.5/4) bands of oxidation near sand lenses; massive; friable; slightly effervescent; abrupt lower boundary; sand lenses up to 4 cm thick every 8 to 10 cm; laminated.

229-254 (7.5-8.3)

3C3

yellowish brown (10YR5/4) fine sand; single grain; loose; noneffervescent; abrupt lower boundary; 9 cm inferred (no recovery).

254-265 (8.3-8.7)

4C4

very dark gray (10YR3/1) loamy sand; massive; friable; noneffervescent; abrupt lower boundary; laminated.

265-274 (8.7-9.0)

5C5

yellowish brown (10YR5/4) fine sand; single grain; loose; noneffervescent; abrupt lower boundary.

274-294 (9.0-9.6)

6C6

very dark gray to black (10YR3/1-2/1) sandy loam to silt loam; mottles are few, distinct, medium, dark reddish brown (5YR3/4) bands of oxidation near sand lenses; massive; friable; noneffervescent; abrupt lower boundary; laminated; wood and plant matter; band of oxidized sand near base (288-292 cm).

294-405 (9.6-13.3)

7C7

bands of varying degrees of oxidation from dark yellowish brown (10YR4/4) to grayish brown (10YR5/2) fine to medium sand; single grain; loose; noneffervescent; abrupt lower boundary; occasional lenses of laminated loamier sand; one has plant matter at 406 to 408 cm; may be a fining upwards sequence; 77 cm no recovery.

405-464 (13.3-15.2)

8C8

dark yellowish brown (10YR4/4) fine to medium sand; mottles are many, coarse, faint to distinct, strong brown (7.5YR4/6) and dark brown (10YR3/3); single grain; loose; noneffervescent; abrupt lower boundary; loamier sand top 6 cm, laminated, contains plant matter; bands of oxidation.

464-468 (15.2-15.4)

9C9

dark grayish brown (10YR4/2) and black (10YR2/1) loamy sand to fine sand; single grain; loose; noneffervescent; unknown lower boundary (end of tubes); laminated loamy sands top 2 cm, on top of fine sands; band of oxidation (<1 mm thick).

468-498 (15.4-16.3)

no recovery; refused on sand.

Auger Sample:

498-540 (16.3-17.7)

very dark grayish brown (10YR3/2) medium sand; noneffervescent; some rounded pebbles.

Depth

cm(ft)

or Zone

Description

0-10 (0-.3)

Acum

very dark grayish brown (10YR3/2) silt loam; friable to very friable; noneffervescent; abrupt lower boundary; laminated, especially near base; roots; base is pale brown (10YR6/3).

10-33 (.3-1.1)

Ap

black (10YR2/1) silt loam to loam; mottles are common, medium, distinct, yellowish brown (10YR5/4); weak, medium, granular to medium platy; very friable; noneffervescent; clear lower boundary; platier near base; worm burrows; more mottled in top half of horizon; rootlets.

33-74 (1.1-2.4)

A

black (10YR2/1) silt loam; weak, fine, subangular blocky to weak platy; very friable; noneffervescent; clear lower boundary; rootlets.

74-89 (2.4-2.9)

BA

very dark brown (10YR2/2) silt loam; moderate, medium, subangular blocky; clay and silt coatings are thin, discontinuous, coat some ped faces; friable; noneffervescent; clear lower boundary; rootlets.

89-167 (2.9-5.5)

Bt

dark brown to dark yellowish brown (10YR3/3-3/4); clay-rich silt loam; mottles are common, faint, fine, yellowish brown (10YR5/4); moderate, fine to medium, columnar parting to medium subangular blocky at top; clay and silt coatings are continuous, common, coat ped faces and pore spaces; firm; noneffervescent; gradual lower boundary; few rootlets; oxidized; infilled worm burrows, root voids; 5 cm inferred (no recovery).

167-233 (5.5-7.6)

BC

yellowish brown to dark yellowish brown (10YR5/4-4/4) clay-rich silt loam; weak, medium to coarse, columnar; clay coatings are moderate, continuous to discontinuous, few, coat ped faces; few, discontinuous, silt coatings on ped faces; friable; noneffervescent; clear lower boundary; oxidized.

233-326 (7.6-10.7)

C

brown to dark brown (10YR4/3) silt loam; mottles are many, faint, fine, dark yellowish brown (10YR3/4); massive; friable; noneffervescent; gradual lower boundary; faintly laminated; 4 cm inferred (no recovery).

326-405 (10.7-13.3)

Cg

dark grayish brown (2.5Y4/2) silt loam; mottles are few, distinct, fine, dark brown (7.5YR3/4); massive; friable to firm; noneffervescent; abrupt lower boundary; fewer oxidation mottles than C; slightly more clay-rich than C; few gastropod shells; 7 cm inferred (no recovery).

405-444 (13.3-14.6)

2C

pale brown (10YR6/3) fine to medium sand; mottles are common, coarse, faint, yellowish brown (10YR 5/6) bands of oxidation; single grain; loose; noneffervescent; unknown lower boundary (end of tubes); banded - varying degrees of oxidation; lens of coarse sand 454 to 455 cm.

444-507 (14.7-16.6)

no recovery; refused in sand.

Auger Samples:

617-752 (20.2-24.7)

dark yellowish brown (10YR4/4) medium sand; noneffervescent; sample also contained dark grayish brown (10YR4/2) to very dark gray (10YR3/1) loam; may be lower than sands - sands coated the loam.

857-992 (28.1-32.6)

dark yellowish brown (10YR4/4) clay-rich loam; very slightly effervescent; very few small pebbles; near the clay loam/sandy clay loam/loam triple junction.

Depth

cm(ft)

or Zone

Description

0-7 (0-.2)

A

black (10YR2/1) sandy loam; weak, medium, granular; friable; noneffervescent; abrupt lower boundary.

7-18 (.2-.6)

C1

black (10YR2/1) sandy loam to fine sand; weak, medium, granular at top to massive to single grain at base; friable; slightly effervescent; abrupt lower boundary; finely laminated at top; sandier with depth; fining upwards sequence; grasses/rootlets.

18-41 (.7-1.4)

2C2

black to dark brown (10YR2/1-3/3) silt loam to fine sand; platy at top to massive to single grain at base; friable; noneffervescent; abrupt lower boundary; finely laminated silts at top to fine sand at base; fining upwards sequence; rootlets.

41-46 (1.4-1.5)

3C3

black (10YR2/1) silt loam; moderate, medium to fine platy (may be fracturing above bedding planes; friable; noneffervescent; abrupt lower boundary; finely laminated; may be top of fining upwards sequence.

46-84 (1.5-2.8)

3C4

brown to dark brown (10YR4/3) fine sand; single grain; loose; noneffervescent; gradual lower boundary; 2 thin (<1 cm thick) laminated silt lenses; may be part of fining upwards sequence with 3C3 and 3C5.

84-129 (2.8-4.2)

no recovery.

129-143 (4.2-4.7)

3C5

brown to dark brown (10YR4/3) medium sand; single grain; loose; noneffervescent; clear lower boundary; part of fining upwards sequence with 3C3 and 3C4.

143-176 (4.7-5.8)

4C6

dark yellowish brown (10YR3/4) fine sand; single grain; loose; noneffervescent; gradual lower boundary; few silty, more organic-rich lenses, some containing plant matter.

176-346 (5.8-11.4)

4C7

brown to dark brown (10YR4/3) medium sand; mottles are few, medium, faint, dark gray (10YR4/1); single grain; loose; noneffervescent; unknown lower boundary (end of tubes); very few pebbles; no recovery from 180-254 cm.

346-371 (11.4-12.2)

no recovery; refused on sand.

Auger Samples:

422-557 (13.9-18.3)

dark yellowish brown (10YR4/6) medium sand; slightly effervescent; oxidized.

557-664 (18.3-21.8)

yellowish brown (10YR5/6) medium sand; slightly effervescent; oxidized.

Depth

cm(ft)

or Zone

Description

0-20 (0-.7)

A

black (10YR2/1) silt loam to loam; moderate, medium, platy; friable; noneffervescent; gradual lower boundary; roots; many worm burrows (not filled).

20-39 (.7-1.3)

AC

very dark brown (10YR2/2) silt loam; mottles are few, faint, fine, dark brown (7.5YR3/2); moderate, fine, subangular blocky to platy; friable; noneffervescent; clear lower boundary; lot of worm burrows/root voids; remnants of bedding; rootlets.

39-97 (1.3-3.2)

2AC

black (10YR2/1) silt loam; mottles are few, faint, fine, dark reddish brown (2.5YR2.5/4); weak, coarse, platy to massive; friable; noneffervescent; gradual lower boundary; abundant plant matter (grass/wood/roots), often along horizontal (bedding?) planes; few lenses of brown to dark brown (10YR4/5) silt/fine sand; rootlets near top; angular fractures.

97-140 (3.2-4.6)

2C

very dark gray (10YR3/1) silt loam; mottles are few, fine, distinct, yellowish red (5YR4/6); weak, coarse, platy to massive; friable; noneffervescent; abrupt lower boundary; 10 cm inferred (no recovery).

140-155 (4.6-5.1)

3ACb

black (10YR2/1) silt loam; mottles are few, fine, distinct, yellowish red (5YR4/6); massive structure (highly fractured); friable; noneffervescent; clear lower boundary; highly fractured - concoidal fractures.

155-320 (5.1-10.5)

3C1

black (2.5Y2/0) silt loam; mottles are common, distinct to faint, medium, dark reddish brown (5YR3/4); massive; friable; noneffervescent; gradual lower boundary (change in texture); iron oxides coat many surfaces; 22 cm inferred (no recovery).

320-353 (10.5-11.6)

3C2

very dark gray (10YR3/1) sandy loam; mottles are few, faint, fine, dark brown (7.5YR3/4); massive; friable; very slightly effervescent; clear lower boundary; plant matter (grasses/roots/reeds/leaves); gastropod shells.

353-370 (11.6-12.1)

4C3

dark brown (10YR3/3) medium sand; mottles are few, coarse, faint, dark yellowish brown (10YR3/6); single grain; loose; noneffervescent; unknown lower boundary (end of tubes).

370-405 (12.1-13.3)

no recovery; refused on sand.

Auger Samples:

515-650 (16.9-21.3)

dark yellowish brown (10YR4/4) fine sand; noneffervescent.

745-880 (24.4-28.9)

dark yellowish brown (10YR3/6) fine sand; noneffervescent.

Depth

cm(ft)

or Zone

Description

0-17 (0-.6)

Acum

black (10YR2/1) sandy loam; weak to moderate, medium, platy; friable; noneffervescent; clear lower boundary; roots; granular structure top 4 cm; crudely laminated.

17-27 (.6-.9)

AC

black (10YR2/1) loamy sand; massive to single grain; friable; noneffervescent; clear lower boundary; laminated; rootlets.

27-145 (.9-4.8)

C1

dark brown (10YR3/3) fine to medium sand; single grain; loose; noneffervescent; abrupt lower boundary; occasional thin (<1 cm thick) layers of laminated silts; no recovery 69-127 cm.

145-177 (4.8-5.8)

2C2

very dark grayish brown (10YR3/2) silt loam; mottles are common, medium, faint, dark brown (7.5YR3/4) to dark red (2.5YR3/6); massive; friable; noneffervescent; abrupt lower boundary; conchoidal fractures.

177-196 (5.8-6.4)

3C3

dark brown (10YR3/3) fine sand to loamy sand; single grain; loose; noneffervescent; unknown lower boundary (end of tube); band of black (10YR2/1) loam from 192-193 cm; loam layer has few rootlets.

196-254 (6.4-8.3)

no recovery.

254-264 (8.3-8.7)

4C4

dark yellowish brown (10YR4/4) coarse sand; single grain; loose; noneffervescent; abrupt lower boundary; oxidized.

264-273 (8.7-9.0)

5C5

very dark grayish brown to very dark gray (10YR3/2-3/1) sandy loam; massive; friable; noneffervescent; unknown lower boundary (end of tube); plant matter; few bands of silt loam; silt loam is slightly more brown ([10YR3/2] rather than [10YR3/1]) than sandy loam; few sand lenses.

273-378 (9.0-12.4)

no recovery.

378-434 (12.4-14.2)

6C6

dark yellowish brown (10YR4/4) coarse sand; single grain; loose; noneffervescent; unknown lower boundary (end of tubes); few small pebbles, oxidized.

434-498 (14.2-16.3)

no recovery; refused on sand.

Auger Samples:

608-743 (20.0-24.4)

yellowish brown (10YR5/6) medium sand; very slightly effervescent; oxidized.

858-993 (28.2-32.6)

yellowish brown (10YR5/6) medium sand; very slightly effervescent; oxidized.

Depth

cm(ft)

or Zone

Description

0-17 (0-.6)

A

black (10YR2/1) silt loam; weak, fine, subangular blocky; friable; noneffervescent; clear lower boundary; rootlets.

17-95 (.6-3.1)

C1

very dark grayish brown (10YR3/2) and light gray (10YR7/2) silt loam; mottles are few, fine, faint, dark brown (7.5YR3/4) in darker layers; massive structure (fractures along bedding planes); friable; noneffervescent; diffuse lower boundary; finely laminated; rootlets.

95-168 (3.1-5.5)

C2

very dark gray (10YR3/1) silt loam; mottles are common, faint, medium to fine, very dusky red (2.5YR2.5/2); massive structure (highly fractured); friable; noneffervescent; gradual lower boundary; thin (<1 cm) lenses of laminated brown (10YR5/3) silts every 10 to 15 cm; sand lens at base; fractured; scattered silt lenses; 14 cm inferred (no recovery).

168-226 (5.5-7.4)

2C3

black (10YR2/1) silt loam; mottles are few, fine, distinct, dusky red (10R3/4); massive; friable; noneffervescent; clear lower boundary.

226-303 (7.4-9.9)

2C4

very dark gray (10YR3/1) clay-rich silt loam; mottles are common, fine, distinct, dark red (10R3/6); massive; friable to firm; noneffervescent; clear lower boundary; more clay-rich than 2C3; 6 cm inferred (no recovery).

303-362 (9.9-11.9)

2C5

black (2.5Y2/0) to very dark gray (10YR3/1) silt loam to sandy loam; massive; friable to firm; noneffervescent; abrupt lower boundary; sandier near base; wood collected from 350 to 362 cm; lot of plant matter (wood, roots, stems) near base; large root/wood? collected at 362 cm; unidentified hardwood from 362 cm C-14 dated at 2,890±70 BP.

362-381 (11.9-12.5)

3C6

brown (10YR5/3) coarse sand; mottles are many, coarse, distinct, yellowish red (5YR4/6); single grain; loose; noneffervescent; unknown lower boundary (end of tubes); bands of oxidation; 5 cm inferred (no recovery).

381-505 (12.5-16.6)

no recovery; refused on sand.

Auger Samples:

610-745 (20.0-24.4)

dark yellowish brown (10YR4/4) fine sand; noneffervescent; oxidized.

Depth

cm(ft)

or Zone

Description

0-25 (0-.8)

Ap

black (10YR2/1) silt loam to loam; weak, fine to medium, platy parting to medium granular; friable; noneffervescent; clear lower boundary; rootlets.

25-38 (.8-1.2)

AB

dark brown (10YR3/3) silt loam; mottles are few, faint, fine, very pale brown (10YR8/3); moderate, medium, platy parting to moderate, fine, angular blocky; clay coatings are thin, discontinuous, coat ped faces; friable; noneffervescent; clear lower boundary; rootlets.

38-73 (1.2-2.4)

Bt1

dark yellowish brown (10YR3/4) clay-rich silt loam; mottles are few, faint, fine, very pale brown (10YR8/4); strong, medium; angular blocky; clay coatings are continuous, distinct, coat ped faces; friable; noneffervescent; clear lower boundary; few, omnidirectional rootlets.

73-90 (2.4-3.0)

Bt2

dark yellowish brown (10YR4/4) loam; mottles are common, distinct, medium, very pale brown (10YR7/3) coating ped faces and few, faint, medium, strong brown (10YR4/6); moderate to strong, medium, columnar parting to medium subangular blocky; clay coatings are continuous, distinct, coat ped faces; silt/sand coatings are discontinuous, distinct, coat ped faces; friable; noneffervescent; clear lower boundary; sandier with depth; omnidirectional rootlets.

90-127 (3.0-4.2)

B and C

interbedded dark yellowish brown (10YR4/4) loam to clay-rich silt loam and strong brown (7.5YR4/6) loamy sand; mottles are few, faint, fine, light gray (10YR7/1) in loamy layers; weak to moderate, medium, subangular blocky in loamier layers, single grain in sands; clay coatings are discontinuous, faint, coat ped faces; friable; noneffervescent; unknown lower boundary (end of tube); laminated; interbedded lenses of loamy sand to fine sand (2 to 4 cm thick); few rootlets near top; 4 cm inferred (no recovery).

127-139 (4.2-4.6)

C1

strong brown (7.5YR4/6) fine sand; single grain; loose; noneffervescent; abrupt lower boundary (color change); thin (<1 cm thick) lens of black (10YR2/1) loam at 134 cm; oxidized.

139-155 (4.6-5.1)

C2

yellowish brown (10YR5/4) fine sand; single grain; loose; noneffervescent; abrupt lower boundary (color change); oxidized.

155-175 (5.1-5.7)

C3

dark yellowish brown (10YR4/4) fine sand; single grain; loose; noneffervescent; unknown lower boundary (end of tubes); oxidized; refused on sand.

Auger Samples:

245-380 (8.1-12.5)

yellowish brown (10YR5/4) fine sand; slightly effervescent; sand is rounded; no pebbles.

Depth

cm(ft)

or Zone

Description

0-8 (0-.3)

Ap1

black (10YR2/1) sandy loam; weak, medium, granular; friable; noneffervescent; abrupt lower boundary; rootlets.

8-32 (.3-1.1)

Ap2

very dark brown (10YR2/2) sandy loam; weak, coarse, platy; friable; noneffervescent; clear lower boundary; omnidirectional rootlets; few infilled worm burrows/root voids; compacted.

32-55 (1.1-1.8)

Bt

dark brown (10YR3/3) loam; weak, coarse, prismatic to massive; clay coatings are thin, discontinuous, faint, coat ped faces; friable; noneffervescent; clear lower boundary; root voids partially infilled with sediment; omnidirectional rootlets; hard when dry; weak Bt.

55-68 (1.8-2.2)

C1

dark yellowish brown (10YR4/4) loamy sand; single grain; loose; noneffervescent; gradual lower boundary; few rootlets; oxidized.

68-89 (2.2-2.9)

C2

yellowish brown (10YR5/6) fine sand; single grain; loose; noneffervescent; gradual lower boundary; black (10YR2/1) loam lens at 84 cm; overall, unit is loamier near top; few rootlets; oxidized.

89-160 (2.9-5.3)

C3

yellowish brown (10YR5/6) fine to medium sand; single grain; loose; noneffervescent; unknown lower boundary (end of tubes); oxidized; no recovery 99-127 cm.

160-177 (5.3-5.8)

no recovery; refused on sand.

Auger Samples:

286-421 (9.4-13.8)

dark yellowish brown (10YR4/4) fine to medium sand; noneffervescent; oxidized.

531-666 (17.4-21.9)

dark yellowish brown (10YR4/4) fine sand; very slightly effervescent; oxidized.

Depth

cm(ft)

or Zone

Description

0-24 (0-.8)

Ap

very dark grayish brown (10YR3/2) sandy loam; weak, medium to coarse, platy; friable; noneffervescent; abrupt lower boundary; roots; worm burrows.

24-54 (.8-1.8)

Bt

brown to dark brown (7.5YR4/4) sandy clay loam; mottles are few, faint, fine, very dark grayish brown (10YR3/2) (infilling worm burrows/root voids); weak to moderate, medium, prismatic parting to medium subangular blocky; clay coatings are discontinuous, thin, coat ped faces; firm; noneffervescent; clear lower boundary; omnidirectional rootlets; oxidized; worm burrows infilled with sediment.

54-74 (1.8-2.4)

C1

light yellowish brown (10YR6/4) fine sand; single grain; loose; noneffervescent; clear lower boundary; rootlets.

74-83 (2.4-2.7)

C2

strong brown (7.5YR4/6) loamy sand; single grain; loose; noneffervescent; abrupt lower boundary; oxidized; few rootlets.

83-164 (2.7-5.4)

C3

light gray to pale brown (10YR7/2-6/3) fine sand; mottles are few, coarse, distinct, strong brown (7.5YR4/6) single grain; loose; noneffervescent; unknown lower boundary (end of tubes); several lenses of loamy sand (strong brown [7.5YR4/6]) near top of horizon; slight change in color at 133 cm (changes to pale brown); no recovery 89-127 cm; refused on sand.

Auger Samples:

271-406 (8.8-13.3)

dark yellowish brown (10YR4/4) fine to medium sand; noneffervescent; oxidized.

521-656 (17.1-21.5)

dark yellowish brown (10YR4/4) fine sand to loamy sand; very slightly effervescent; oxidized.

Depth

cm(ft)

or Zone

Description

Depth

cm(ft)

or Zone

Description

0-25 (0-.8)

Ap

very dark brown (10YR2/2) sandy loam; weak, medium, granular to massive; very friable; noneffervescent; clear lower boundary; rootlets.

25-69 (.8-2.3)

AC

dark yellowish brown (10YR3/4) loamy sand; weak, coarse, granular to massive; very friable; noneffervescent; gradual lower boundary; rootlets.

69-97 (2.3-3.2)

CA

dark yellowish brown (10YR4/4) loamy sand to fine sand; massive to weak, coarse, granular; very friable to loose; noneffervescent; gradual lower boundary; resembles a C horizon with very weak ped development; rootlets.

97-186 (3.2-6.1)

C

yellowish brown (10YR5/6) fine sand; single grain; loose; noneffervescent; unknown lower boundary (end of tubes); scattered nodules of oxidized sands, brown to dark brown (7.5YR4/4); few rootlets; 7 cm inferred (no recovery).

186-207 (6.1-6.8)

no recovery; refused on sand.

Auger Samples:

269-404 (8.8-13.3)

dark yellowish brown (10YR4/4) fine sand; noneffervescent.

Depth

cm(ft)

or Zone

Description

0-10 (0-.3)

Ap

black (10YR2/1) sandy loam; massive; friable; very slightly effervescent; abrupt lower boundary; manure substrate.

10-21 (.3-.7)

A

very dark gray (10YR3/1) sandy clay loam diamicton; massive; firm; noneffervescent; clear lower boundary; hard when dry; small pebbles common; some manure clumps.

21-43 (.7-1.4)

Bt1

very dark grayish brown (10YR3/2) clay loam; mottles are few, fine, distinct, reddish brown to dark reddish brown (5YR4/4-3/3); moderate, medium, prismatic parting to coarse subangular blocky; clay coatings are thin, continuous, coat ped faces and line root voids; firm; noneffervescent; gradual lower boundary; hard when dry; few small pebbles; some fracturing near top of unit; clay coatings stronger near base; rootlets.

43-56 (1.4-1.8)

Bt2

dark grayish brown (10YR4/2) clay loam; mottles are few, fine, faint, strong brown (7.5YR4/6); weak, medium, prismatic parting to medium subangular blocky; clay coatings are moderate, thick, moderately continuous, coat ped faces; firm; noneffervescent; clear lower boundary; hard when dry; few small pebbles; few rootlets.

56-66 (1.8-2.2)

C1

grayish brown (10YR5/2) coarse sand; single grain; loose; noneffervescent; clear lower boundary; few small pebbles.

66-75 (2.2-2.5)

2C2

dark yellowish brown (10YR3/4) sandy loam; massive; friable; noneffervescent; clear lower boundary; oxidized; few small pebbles; few rootlets.

75-87 (2.5-2.9)

2C3

grayish brown (2.5Y5/2) sandy clay loam; mottles are few, fine, faint, dark yellowish brown (10YR3/4); massive; clay coatings are thick, coat pebble voids; firm; noneffervescent; clear lower boundary; few small pebbles; few rootlets.

87-186 (2.9-6.1)

2C4

pale brown (10YR6/3) fine to medium sand; mottles are few, coarse, distinct, strong brown (7.5YR4/6) bands of oxidation; single grain; loose; noneffervescent; unknown lower boundary (end of tubes); few bands of oxidized sands; few rounded pebbles; 34 cm inferred (no recovery); refused on coarse sand.

Auger Sample:

303-438 (9.9-14.4)

yellowish brown (10YR5/4) fine to medium sand; slightly effervescent; oxidized.

Depth

cm(ft)

or Zone

Description

0-24 (0-.8)

Ap1

very dark grayish brown (10YR3/2) silt-rich loam; mottles are few, fine, faint, brown (10YR5/3); moderate, medium, platy to weak, medium, granular; friable; slightly effervescent; abrupt lower boundary; many rootlets; roots; compacted.

24-38 (.8-1.3)

Ap2

black (10YR2/1) loam; mottles are few, fine, faint, pale brown (10YR6/3); moderate, medium, platy; friable; very slightly effervescent; clear lower boundary; darker, blacker, more organic-rich than Ap1; many omnidirectional rootlets; compacted; many worm burrows filled with lighter colored sediment.

38-96 (1.3-3.2)

A

black (10YR2/1) loam; weak, fine, granular; friable; slightly effervescent; gradual lower boundary; omnidirectional rootlets.

96-136 (3.2-4.5)

AC

dark brown (10YR3/3) loam; weak, fine, granular to massive; friable; strongly to violently effervescent; gradual lower boundary; many worm burrows/root voids, few filled with sediment; sandier near base; few rootlets; 5 cm inferred (no recovery).

136-162 (4.5-5.3)

C

dark brown (10YR3/3) sandy loam; massive; friable; violently effervescent; abrupt lower boundary; hard when dry; few omnidirectional rootlets; very few shell fragments.

162-176 (5.3-5.8)

2ACb

very dark brown (10YR2/2) loam; weak, medium, granular; friable; violently effervescent; clear lower boundary; few omnidirectional rootlets; few shell fragments; mollusk shell.

176-189 (5.8-6.2)

2C1

grayish brown (10YR5/2) medium to coarse sand; single grain; loose; violently effervescent; gradual lower boundary; shell fragments; gastropod shells; few small pebbles.

189-239 (6.2-7.8)

2C2

pale brown (10YR6/3) coarse sand and gravel; single grain; loose; violently effervescent; unknown lower boundary (end of tubes); many rounded pebbles, small to large; lens of very dark grayish brown (10YR3/2) sandy loam from 208-211 cm; shell fragments; gastropod and mollusk shells; 16 cm inferred (no recovery); refused on coarse sand.

Auger Sample:

259-394 (8.5-12.9)

yellowish brown to brown (10YR5/4-5/3) gravel and loamy sand; violently effervescent; many rounded pebbles, all sizes; sand is fine to coarse; few shell fragments; refused on gravel/boulder.

Depth

cm(ft)

or Zone

Description

0-19 (0-.6)

Ap1

black (10YR2/1) loam to silt loam; moderate, medium, granular; friable; slightly to strongly effervescent; clear lower boundary; more massive near base; rootlets; few medium pebbles.

19-32 (.6-1.1)

Ap2

black (10YR2/1) loam to silt loam; weak, medium, subangular blocky to moderate, medium, granular; clay coatings are thin, discontinuous, line root voids/worm burrows; friable; strongly effervescent; clear lower boundary; rootlets; few small rounded pebbles; slightly compacted.

32-86 (1.1-2.8)

A

black (10YR2/1) loam; weak to moderate, fine to medium, granular; very friable; violently effervescent; gradual lower boundary; few small pebbles; omnidirectional rootlets; noticeably blacker than Ap1 and Ap2 when dry.

86-138 (2.8-4.5)

AC

black to very dark gray (10YR2/1-3/1) loam; weak, medium, subangular blocky to massive; clay coatings are thin, discontinuous, line root voids; friable; strongly to violently effervescent; gradual lower boundary; few omnidirectional rootlets; few small pebbles; 7 cm inferred (no recovery).

138-267 (4.5-8.8)

C1

very dark grayish brown (10YR3/2) sandy loam; massive; friable; strongly to violently effervescent; gradual lower boundary; few sand lenses near base; gastropod shells; few small to medium rounded pebbles; few rootlets; 6 cm inferred (no recovery).

267-279 (8.8-9.2)

C2

very dark grayish brown (10YR3/2) loam; massive; friable; strongly to violently effervescent; unknown lower boundary (end of tubes); many small to large pebbles, mostly rounded with some angular; more dense than C1; few gastropod shells; thin clay coatings line pebble holes; refused on gravel.

Auger Sample:

279-378 (9.2-13.1)

dark grayish brown (10YR4/2) sandy loam to sandy clay loam diamicton; strongly to violently effervescent; coarse sand; many small to medium pebbles; very poor recovery; refused on boulder.

Depth

cm(ft)

or Zone

Description

0-23 (0-.8)

Ap

black (10YR2/1) loam; weak, medium, granular; slightly platy near base; friable; slightly to strongly effervescent; clear lower boundary; roots; many root voids/worm burrows.

23-93 (.8-3.1)

A

black (10YR2/1) loam; weak, medium, granular to massive; friable; strongly to violently effervescent; gradual lower boundary; structure is weaker with depth; many root voids/worm burrows in top half; root voids are discontinuously coated with blacker sediment; rootlets common.

93-171 (3.1-5.6)

AC

very dark brown (10YR2/2) loam; massive; friable; violently effervescent; diffuse lower boundary; few small pebbles; few omnidirectional rootlets; 16 cm inferred (no recovery).

171-210 (5.6-6.9)

C1

very dark grayish brown (10YR3/2) sandy loam; massive; very friable; violently effervescent; clear lower boundary; few omnidirectional rootlets; few small pebbles; few shell fragments.

210-250 (6.9-8.2)

C2

dark brown (10YR3/3) loamy sand; single grain; loose; violently effervescent; gradual lower boundary; few small pebbles; few gastropod shells; 6 cm inferred (no recovery).

250-285 (8.2-9.4)

C3

brown to dark brown (10YR4/3) fine sand; single grain; loose; strongly to violently effervescent; abrupt lower boundary; lens of loamy sand 280-285 cm; shell fragments; gastropod shells; 2 cm inferred (no recovery).

285-291 (9.4-9.6)

2C4

brown to dark brown (10YR4/3) medium sand and gravel; single grain; loose; strongly to violently effervescent; unknown lower boundary (end of tubes); many small to medium, rounded pebbles; few angular pebbles; few small cobbles; few shell fragments; refused on gravel.

Auger Sample:

295-430 (9.7-14.1)

dark brown (10YR3/3) sandy loam to sandy clay loam; strongly to violently effervescent; many small to large, rounded pebbles; few cobbles; refused on cobbles.

Depth

cm(ft)

or Zone

Description

0-4 (0-.1)

Ap1

black (10YR2/1) loam; mottles are few, fine, faint, dark gray (10YR4/1); weak, medium, granular; friable; very slightly effervescent; abrupt lower boundary; roots; some gravel; may be field road surface material; silt lens at base.

4-22 (.1-.7)

Ap2

black (10YR2/1) loam; moderate, medium, platy; friable; slightly effervescent; clear lower boundary; rootlets.

22-93 (.7-3.1)

A

black (10YR2/1) loam; weak to moderate, medium, granular; clay coatings are thin, discontinuous, line root voids; friable; strongly to violently effervescent; diffuse lower boundary; lower boundary disturbed in coring; many root voids; few gastropod shells; rootlets.

93-138 (3.1-4.5)

AC

very dark brown (10YR2/2) loam; massive to weak, medium, granular; clay coatings are thin, discontinuous, line root voids; friable; violently effervescent; gradual lower boundary; few gastropod shells; many root voids/worm burrows; more clay-rich than surrounding units; 5 cm inferred (no recovery).

138-254 (4.5-8.3)

C1

very dark grayish brown (10YR3/2) loam to sandy loam; massive; clay coatings are thin, discontinuous, line root voids; friable; violently effervescent; gradual lower boundary; few shell fragments; gastropod shells; 10 cm inferred (no recovery).

254-299 (8.3-9.8)

C2

dark gray (10YR4/1) loam; mottles are few, fine, distinct, dark yellowish brown (10YR3/4) and few, coarse, distinct, grayish brown (10YR5/2); massive; fractures along bedding planes; friable; violently effervescent; abrupt lower boundary; angular fractures; interbedded lenses of fine sand; some laminations in loam; few oxidized bands; few shell fragments; gastropod shells.

299-374 (9.8-12.3)

2C3

grayish brown (10YR5/2) fine sand; single grain; loose; violently effervescent; abrupt lower boundary; few shell fragments; mollusk shells; 37 cm no recovery.

374-392 (12.3-12.9)

2C4

dark grayish brown (10YR4/2) loamy sand; mottles are few, fine, distinct, dark yellowish brown (10YR4/4); massive; very friable; strongly effervescent; abrupt lower boundary; sandy loam at base (390-392 cm); thin fine sand lens near top; crude bedding; few oxidized bands.

392-410 (12.9-13.5)

2C5

brown to dark brown (10YR4/3) medium sand; mottles are few, medium, distinct, strong brown (7.5YR5/6) at top of horizon; single grain; loose; strongly effervescent; clear lower boundary; shell fragments; oxidized band at top.

410-433 (13.5-14.2)

2C6

brown to yellowish brown (10YR5/3-5/4) coarse sand; mottles are few, medium to coarse, distinct, dark gray (10YR4/1) in loamy sand lens; single grain; loose; strongly effervescent; unknown lower boundary (end of tubes); lens of loamy sand at base; several small to medium pebbles at base; sand is rounded; few shell fragments.

433-471 (14.2-15.5)

no recovery; refused on sand.

Auger Sample:

615-750 (20.2-24.6)

dark yellowish brown (10YR4/4) medium sand; strongly effervescent; oxidized; few shell fragments; drilling rough.

Depth

cm(ft)

or Zone

Description

0-7 (0-.2)

Ap1

black (10YR2/1) loam; weak, fine, granular; friable; very slightly effervescent; abrupt lower boundary; rootlets; few small pebbles.

7-21 (.2-.7)

Ap2

black (10YR2/1) loam; mottles are common, medium, distinct, brown (10YR5/3); moderate, fine to medium, platy; friable; slightly effervescent; abrupt lower boundary; hard when dry; angular fracturing along bedding planes and perpendicular to bedding planes; compacted; silt-rich.

21-55 (.7-1.8)

AC

very dark grayish brown (10YR3/2) sandy loam to loamy sand; mottles are common, medium, faint, black to very dark gray (10YR2/1-3/1); single grain; loose; slightly effervescent; gradual lower boundary; few interbedded lenses of loam with fine platy texture; small to large pebbles common; sandier with depth; 10 cm inferred (no recovery).

55-95 (1.8-3.1)

C

dark yellowish brown (10YR4/4) fine sand; single grain; loose; very slightly effervescent; gradual lower boundary; lowest 5-10 cm is a transition zone to next horizon; small rounded pebbles common; piece of tile near base; 15 cm inferred (no recovery).

95-133 (3.1-4.4)

2Ab1

very dark gray (10YR3/1) clay-rich loam; mottles are few, fine, faint, dark brown (7.5YR3/2); massive to weak, fine, subangular blocky; friable; slightly effervescent; clear lower boundary; very few shell fragments; not much sand for a loam; few small pebbles; 12 cm inferred (no recovery).

133-165 (4.4-5.4)

2Ab2

black (10YR2/1) loam; moderate, fine, granular; very friable; strongly effervescent; abrupt lower boundary; rootlets; much less dense than 2A1b; very few gastropod shells near base.

165-184 (5.4-6.0)

3C

dark yellowish brown (10YR4/4) sandy loam and gravel; massive; friable; strongly to violently effervescent; unknown lower boundary (end of tubes); many angular cobbles and large pebbles; many small to large carbonate pebbles, mostly angular; few cobbles; oxidized; colluvium.

184-204 (6.0-6.7)

no recovery; refused on cobbles.

Auger Samples:

207-342 (6.8-11.2)

yellowish brown (10YR5/6) fine sandy loam; slightly to strongly effervescent; auguring very rough, through cobbles; sand is very fine; few small pebbles; oxidized.

342-432 (11.2-14.2)

yellowish brown (10YR5/6) loam to fine sandy loam; slightly effervescent; small pebbles common; sand is very fine; oxidized; refused on cobble.

Depth

cm(ft)

or Zone

Description

0-21 (0-.7)

Ap

black (10YR2/1) loam; moderate, medium, granular; friable; slightly effervescent; clear lower boundary; few small pebbles; roots.

21-78 (.7-2.6)

A

black (10YR2/1) loam; moderate, fine, granular; very friable; slightly to strongly effervescent; clear lower boundary (color change); omnidirectional rootlets; much of horizon disturbed in coring; not dense.

78-102 (2.6-3.4)

AC

very dark gray (10YR3/1) loam; weak, coarse, granular to massive; friable; strongly to violently effervescent; clear lower boundary (color change); gastropod and mollusk shells (very few); few omnidirectional rootlets.

102-111 (3.4-3.6)

2Ab

black (10YR2/1) loam; moderate, fine, granular; friable; strongly effervescent; gradual lower boundary; horizon disturbed in coring; few omnidirectional rootlets.

111-153 (3.6-5.0)

2ACb

very dark grayish brown (10YR3/2) loam; massive; clay coatings are thin, discontinuous, line root voids and a few vertical faces (very weak peds?); friable; strongly to violently effervescent; clear lower boundary; very weakly developed prismatic peds(?); few small pebbles; few mollusk shells; 6 cm inferred (no recovery).

153-175 (5.0-5.7)

2C1

very dark grayish brown (10YR3/2) loamy sand to sandy loam; massive; friable; violently effervescent; clear lower boundary; gastropod shells; shell fragments; mollusk shells; 4 cm inferred (no recovery).

175-195 (5.7-6.4)

3C2

very dark grayish brown to brown to dark brown (10YR3/2-4/3) medium sand and gravel; single grain; loose; violently effervescent; unknown lower boundary (end of tubes); many rounded pebbles, all sizes; few angular pebbles; 5 cm inferred (no recovery); refused on rock.

Auger Sample:

195-299 (6.4-9.8)

very dark brown (10YR2/2) loam diamicton; strongly effervescent; pebbles and cobbles throughout; all sizes of pebbles; many clasts are angular, some are rounded.

Depth

cm(ft)

or Zone

Description

0-8 (0-.3)

Ap

black (10YR2/1) sandy loam; weak, medium, granular; friable; noneffervescent; clear lower boundary; many small pebbles; roots; stems.

8-42 (.3-1.4)

A

black (10YR2/1) loam; weak, fine, granular; friable; very slightly effervescent; clear lower boundary; small pebbles common; few medium to large pebbles, some angular; rootlets.

42-47 (1.4-1.5)

AC

black (10YR2/1) loam; massive; friable; strongly effervescent; unknown lower boundary (end of tubes); large pebbles/small cobbles common, often angular; small to medium pebbles common, rounded and angular; few rootlets.

47-64 (1.5-2.1)

Depth

cm(ft)

or Zone

Description

0-47 (0-1.5)

no recovery; refused on cobbles; could not auger.

Depth

cm(ft)

or Zone

Description

0-19 (0-.6)

Ap

dark brown (10YR3/3) silt loam; mottles are few, fine, faint, pale brown (10YR6/3); moderate, medium, granular to moderate, fine, platy near base; silt coatings and clay coatings are moderately thick, discontinuous, coat platy surfaces; friable; noneffervescent; clear lower boundary; roots; stems.

19-70 (.6-2.3)

Bt1

brown to dark brown (10YR4/3) silty clay loam; mottles are few, fine, faint, pale brown (10YR6/3); strong, medium, subangular blocky; clay coatings are moderately thick, continuous, coat ped faces; silt coatings are thin, discontinuous, coat ped faces; friable to firm; noneffervescent; gradual lower boundary; rootlets.

70-120 (2.3-3.9)

Bt2

dark yellowish brown (10YR4/4) silt loam; mottles are few, fine, faint, pale brown (10YR6/3), and few, coarse, faint, very dark grayish brown (10YR3/2); moderate, coarse, prismatic parting to coarse subangular blocky at top; clay coatings are thick, discontinuous, coat ped faces and line root voids; silt coatings are thin, discontinuous, coat ped faces; firm; noneffervescent; gradual lower boundary; few rootlets; more clay-rich than Bt1; oxidized; 8 cm inferred (no recovery).

120-426 (3.9-14.0)

C1

dark yellowish brown (10YR4/4) silt loam; common, medium, distinct, very dark brown (10YR2/2) near base, and common, coarse, faint, yellowish brown (10YR5/4); massive; friable; slightly effervescent below 300 cm; clear lower boundary; silt is coarse; few sand lenses near base; oxidized; few areas are fractured and have oxidized coatings on horizontal planes; charcoal (collected from 315-330 cm); wood at 315 cm C-14 dated as Modern; 38 cm inferred (no recovery); reworked (?) loess.

426-434 (14.0-14.2)

2C2

dark yellowish brown (10YR3/4); fine sand and gravel; single grain; loose; very slightly effervescent; unknown lower boundary (end of tubes); few cobbles; oxidized; 4 cm inferred (no recovery); refused on a cobble.

Auger Sample:

434-501 (14.2-16.4)

dark yellowish brown (10YR4/4) sandy loam; strongly effervescent; many small pebbles; drilling rough; refused on a boulder; may be near bedrock.

Depth

cm(ft)

or Zone

Description

0-11 (0-.4)

Ap

brown to dark brown (10YR4/3) clay-rich silt loam; mottles are common, medium, faint, very dark grayish brown (10YR3/2); weak, medium, granular to massive; friable; noneffervescent; clear lower boundary; many rootlets; roots.

11-70 (.4-2.3)

Bt1

dark yellowish brown (10YR4/4) clay-rich silt loam; mottles are few, coarse, distinct, very dark gray (10YR3/1), and few, fine, distinct, yellowish red (5YR4/6); moderate, coarse, subangular blocky; clay coatings are thin, moderately continuous, coat ped faces and line root voids; silt coatings are thin, discontinuous, coat ped faces; friable; noneffervescent; gradual lower boundary; rootlets; mottles are finer than surrounding sediment; oxidized.

70-112 (2.3-3.4)

Bt2

dark yellowish brown (10YR4/4) silty clay loam; mottles are common, fine, faint, pale brown (10YR6/3), and few, medium, distinct, yellowish red (5YR4/6); moderate, fine to medium, prismatic parting to medium to coarse subangular blocky; clay coatings are moderately thick, continuous, coat ped faces and line root voids; firm; noneffervescent; gradual lower boundary; rootlets; oxidized; no clay coatings last 10 cm.

112-127 (3.4-4.2)

C1

brown to dark brown (7.5YR4/4) silt-rich loam; mottles are common, fine, distinct, black (10YR2/1), and few, fine, faint, pale brown (10YR6/3); massive; clay coatings are moderately thick, discontinuous, line some root voids; friable; noneffervescent; unknown lower boundary (end of tube); oxidized; rootlets; faint bedding; 5 cm inferred (no recovery).

127-168 (4.2-5.5)

C2

dark yellowish brown (10YR4/4) silt-rich loam; mottles are few, fine, distinct, black (10YR2/1), and few, fine, faint, pale brown (10YR6/3); massive (highly fractured); clay coatings are moderately thick, discontinuous, very dark grayish brown (10YR3/2), line some root voids; friable; noneffervescent; clear lower boundary; fractured along horizontal planes; oxidized; few omnidirectional rootlets; very few small pebbles; faint bedding.

168-203 (5.5-6.7)

C3

brown to dark brown (7.5YR4/4) sandy loam; mottles are few, medium, faint, dark brown (10YR4/3); massive (fractured); friable; noneffervescent; clear lower boundary; fractured along horizontal planes; oxidized; sandier with depth; can see faint bedding.

203-222 (6.7-7.3)

C4

yellowish brown (10YR5/4) fine sand to loamy sand; single grain; loose; noneffervescent; abrupt lower boundary; several clumps of loamy sand, may be partially cemented; no noticeable pebbles; oxidized.

222-281 (7.3-9.2)

2C5

dark brown (7.5YR3/4) sandy clay loam; mottles are common, coarse, faint, dark brown (7.5YR3/2); massive; firm; noneffervescent; clear lower boundary; oxidized; many pebbles, mostly rounded; few cobbles; sand is coarse; several dark bands of heavily oxidized (Mn oxides) sandy clay loam; clasts include carbonates and chert; 9 cm inferred (no recovery).

281-323 (9.2-10.6)

2C6

dark brown (7.5YR3/4) sandy clay loam diamicton; mottles are few, coarse, distinct, brown (7.5YR5/4); massive; firm; strongly to violently effervescent; unknown lower boundary (end of tubes); very little matrix, mostly rocks; many pebbles and small cobbles, rounded and angular; sand is coarse; oxidized; clasts include carbonates and granites; 10 cm inferred (no recovery); refused on cobbles; colluvium, near bedrock.

Depth

cm(ft)

or Zone

Description

0-13 (0-.4)

C

13-21 (.4-.7)

2A

very dark grayish brown (10YR3/2) silt loam; weak, fine, platy to fine granular; friable; noneffervescent; abrupt lower boundary; rootlets.

21-62 (.7-2.0)

2CA

very dark grayish brown (10YR3/2) silt loam; mottles are common, medium, distinct, black (10YR2/1); massive to weak, fine, granular; very friable; noneffervescent; clear lower boundary; faint laminations; horizontal roots; rootlets.

62-112 (2.0-3.7)

2C

dark brown to brown (10YR3/3-5/3) silt to silt loam; mottles are few, medium, distinct, black (10YR2/1), and few, fine, distinct, strong brown (10YR4/6); massive; clay coatings are thin, moderately continuous, very dark grayish brown (10YR3/2), coat few vertical surfaces and line root voids; very friable; noneffervescent; gradual lower boundary; laminated; few roots; charcoal collected from 102 cm; lower 15 to 20 cm mottled; recent tributary sediment.

112-151 (3.7-5.0)

3Ab1

black (10YR2/1) clay-rich loam; mottles are few, fine, faint, dark red (10R3/6); weak, medium, granular to moderate, medium, subangular blocky; clay coatings are thin, discontinuous, coat subangular blocky peds; friable; slightly effervescent; gradual lower boundary; few small pebbles; rootlets; 5 cm inferred (no recovery).

151-187 (5.0-6.1)

3Ab2

black (10YR2/1) clay-rich loam; moderate, medium, granular; friable; slightly to strongly effervescent; gradual lower boundary; horizon disturbed in coring; rootlets; few horizontal roots; few small pebbles; few gastropod shells.

187-206 (6.1-6.8)

3ACb

very dark grayish brown (10YR3/2) loam; weak, medium, granular to massive; friable; strongly to violently effervescent; clear lower boundary; horizon disturbed in coring; rootlets; small pebbles common, often angular; few gastropod shells.

206-223 (6.8-7.3)

4C

very dark grayish brown (10YR3/2) loam to sandy clay loam diamicton; massive; friable to firm; violently effervescent; unknown lower boundary (end of tubes); many pebbles, all sizes, rounded and angular; many small angular limestone cobbles; calcite crystals precipitated out; 7 cm inferred (no recovery); refused on cobbles; colluvial.

Auger Sample:

223-256 (7.3-8.4)

very dark grayish brown (10YR3/2) sandy clay loam; strongly effervescent; many small to medium pebbles, rounded and angular; dense; refused on cobbles; very poor recovery.

Depth

cm(ft)

or Zone

Description

0-15 (0-.5)

Ap

very dark grayish brown (10YR3/2) silt loam; weak, medium, granular to platy; friable; noneffervescent; clear lower boundary; roots; few silt lenses near base.

15-42 (.5-1.4)

ACp

very dark grayish brown (10YR3/2) silt loam; mottles are common, fine, distinct, dark reddish brown (5YR3/3), and few, fine, distinct, strong brown (7.5YR5/8); moderate, fine to medium, platy; very friable; noneffervescent; gradual lower boundary; laminated; many thin lenses of brown (10YR5/3) silt loam; rootlets; fractures along bedding planes; recent sediment.

42-78 (1.4-2.6)

AC

very dark grayish brown (10YR3/2) silt loam; mottles are few, fine, distinct, very pale brown (10YR7/4); massive; clay coatings are thin, discontinuous, line root voids; very friable; noneffervescent; clear lower boundary; rootlets; root voids; few lenses of brown (10YR5/3) silts; recent sediment.

78-137 (2.6-4.5)

2ABb

black (10YR2/1) silt loam; weak, fine, granular to weak, coarse, subangular blocky; clay coatings are thin, discontinuous, coat some subangular blocky peds; friable; noneffervescent; clear lower boundary; rootlets; blocky structure is weak, but clay coatings are noticeable; 3 cm inferred (no recovery).

137-162 (4.5-5.3)

2BAb

very dark brown (10YR2/2) silt loam; mottles are common, very fine, faint, brown (10YR5/3); weak, coarse, subangular blocky; clay coatings are thick, moderately continuous, coat ped faces; friable; very slightly effervescent; gradual lower boundary; rootlets.

162-223 (5.3-7.3)

2BCb

dark brown to brown (10YR4/3) silt loam; mottles are common, fine, distinct, very pale brown (10YR7/5), and few, fine, distinct, yellowish red (5YR4/6); weak, medium, subangular blocky; clay coatings are moderately thick, discontinuous, coat ped faces; friable to firm; very slightly effervescent; clear lower boundary; horizon disturbed in coring; more clay-rich than BA horizon; rootlets.

223-262 (7.3-8.6)

2CBb

dark yellowish brown (10YR4/4) silt loam; mottles are few, fine, distinct, yellowish red (5YR4/6); massive to weak, medium, subangular blocky; clay coatings are thin, discontinuous, brown to dark brown (7.5YR4/2), line root voids and coat few ped faces; friable to firm; very slightly effervescent; clear lower boundary; oxidized.

262-322 (8.6-10.6)

3C

dark yellowish brown (10YR4/4-3/4) sandy clay loam diamicton; mottles are coarse, faint to distinct, dark brown (7.5YR3/2-3/4), and few, medium, distinct, strong brown (7.5YR5/8); massive; friable to firm; slightly effervescent; unknown lower boundary (end of tubes); many small to medium pebbles, mostly rounded; few large pebbles/small cobbles; oxidized; band of very dark brown to black (10YR2/2-2/1), 294-299 cm; sand is coarse; Mn oxides; 5 cm inferred (no recovery); refused on cobbles.

Depth

cm(ft)

or Zone

Description

0-16 (0-.5)

Ap

very dark brown (10YR2/2) loam; mottles are few, fine, faint, strong brown (7.5YR4/6); weak, fine, granular to massive; friable; noneffervescent; clear lower boundary; dense; 2 cm of sand on surface; roots.

16-61 (.5-2.0)

A

dark brown (10YR3/3) loam; mottles are few, fine, faint, brown (10YR5/3) and strong brown (7.5YR5/6); weak to moderate, fine, granular; friable; very slightly effervescent; abrupt lower boundary; massive at top; few silt lenses near base; worm burrows filled with dark yellowish brown (10YR3/4) sediment near base; rootlets; 3 cm inferred (no recovery).

61-82 (2.0-2.7)

C1

dark brown (7.5YR3/4) loamy sand; single grain; loose; noneffervescent; clear lower boundary; oxidized; few small to large pebbles; rootlets; 5 cm inferred (no recovery).

82-96 (2.7-3.2)

C2

strong brown (7.5YR5/6) fine sand; single grain; loose; noneffervescent; abrupt lower boundary; few small to large pebbles; rootlets; 5 cm inferred (no recovery).

96-111 (3.2-3.6)

C3

brown to dark brown (7.5YR4/4) loamy sand; single grain; loose; noneffervescent; abrupt lower boundary; oxidized; few pebbles; 5 cm inferred (no recovery).

111-157 (3.6-5.2)

2C4

yellowish brown (10YR5/6) gravel; massive; friable; strongly effervescent; clear lower boundary; many pebbles, all sizes; many small cobbles; limestone/dolostone clasts common; matrix is loamy sand to sandy loam (sand is fine); 5 cm inferred (no recovery); colluvium.

157-181 (5.2-5.9)

3C5

dark brown (7.5YR3/2) sandy clay loam; mottles are common, coarse, distinct, brown to dark brown (7.5YR4/4); massive; friable to firm; slightly effervescent; unknown lower boundary (end of tubes); oxidized; small to medium pebbles common; many spherical, white grains (ooids?); Mn oxides; 10 cm inferred (no recovery); refused on rock (cobbles); colluvium.

Depth

cm(ft)

or Zone

Description

0-20 (0-.7)

Ap

very dark grayish brown (10YR3/2) sandy loam; weak, fine, granular to massive; friable; noneffervescent; abrupt lower boundary; rootlets; platy near base.

20-61 (.7-2.0)

C1

brown to dark brown (7.5YR4/4) loamy sand; massive; very friable; noneffervescent; gradual lower boundary; weakly platy near top; few rootlets; few small pebbles; slightly oxidized; 5 cm inferred (no recovery).

61-84 (2.0-2.8)

C2

brown to dark brown (7.5YR4/4) fine sand; single grain; loose; noneffervescent; abrupt lower boundary; few small to medium pebbles; oxidized; few cobbles; few rootlets; 5 cm inferred (no recovery).

84-97 (2.8-3.2)

C3

strong brown (7.5YR4/6) loamy sand; single grain; loose; noneffervescent; abrupt lower boundary; oxidized; 5 cm inferred (no recovery).

97-112 (3.2-3.7)

C4

light yellowish brown (10YR6/4) fine sand; single grain; loose; noneffervescent; abrupt lower boundary; oxidized; few rootlets; 5 cm inferred (no recovery).

112-131 (3.7-4.3)

C5

strong brown (7.5YR4/6) loamy sand; single grain; loose; noneffervescent; abrupt lower boundary; oxidized; 2 cm inferred (no recovery).

131-147 (4.3-4.8)

2C6

dark brown (7.5YR3/2) clay loam; mottles are few, coarse, distinct, strong brown (7.5YR5/6); massive; friable to firm; strongly effervescent; abrupt lower boundary; oxidized; small to large pebbles, few to common.

147-174 (4.8-5.7)

3C7

strong brown (7.5YR5/6) gravel; massive; friable; strongly effervescent; unknown lower boundary (end of tubes); matrix is sandy clay loam; mostly medium pebbles, some small and large pebbles; limestone/dolostone clasts common; oxidized; 21 cm no recovery; refused on cobbles.

Depth

cm(ft)

or Zone

Description

0-14 (0-.5)

Ap

very dark gray (10YR3/1) silt loam; moderate, medium, platy; friable; noneffervescent; clear lower boundary; roots; worm burrows; few small pebbles.

14-35 (.5-1.2)

AC

very dark grayish brown (10YR3/2) silt loam; mottles are few, fine, faint, black (10YR2/1) and strong brown (7.5YR4/6); weak, medium to coarse, platy to massive; friable; noneffervescent; clear lower boundary; rootlets; few small pebbles.

35-67 (1.2-2.2)

C1

very dark grayish brown (10YR3/2) silt loam; mottles are few, coarse, faint, very dark gray (10YR3/1) and dark brown (7.5YR3/2), and few, fine, faint, strong brown (7.5YR4/6); massive (highly fractured); friable; very slightly effervescent; clear lower boundary; fractured along bedding planes; laminated; few root voids; omnidirectional rootlets.

67-91 (2.2-3.0)

C2

very dark brown (10YR2/2) silt loam to silt; mottles are common, medium, faint, black (10YR2/1), and few, fine, distinct, brown (10YR5/3); massive; friable; slightly effervescent; abrupt lower boundary; few root voids lined with very dark brown (10YR2/2) sediment; few rootlets.

91-210 (3.0-6.9)

2Ab

black (10YR2/1) silt-rich loam; moderate, fine to medium, granular; friable; strongly effervescent; gradual lower boundary; few gastropod and mollusk shells; omnidirectional rootlets; few small pebbles; 5 cm inferred (no recovery).

210-235 (6.9-7.7)

2ACb1

very dark grayish brown (10YR3/2) loam; weak, medium, granular to massive; friable; strongly to violently effervescent; clear lower boundary; few gastropod and mollusk shells; few rootlets.

235-269 (7.7-8.8)

2ACb2

very dark grayish brown (10YR3/2) sandy loam; massive; friable; strongly to violently effervescent; abrupt lower boundary; mollusk and gastropod shells; small to medium pebbles common; few large pebbles at top of horizon; 5 cm inferred (no recovery).

269-284 (8.8-9.3)

2C1

dark grayish brown (10YR4/2) loamy sand to medium sand; single grain; loose; strongly to violently effervescent; clear lower boundary; mollusk and gastropod shells; many small to medium pebbles.

284-322 (9.3-10.6)

2C2

brown (10YR5/3) coarse sand and gravel; mottles are few, coarse, faint, dark grayish brown (10YR4/2) and few, fine, distinct, dark brown (7.5YR3/4); single grain; loose; violently effervescent; unknown lower boundary (end of tubes); many pebbles, all sizes, mostly rounded; few cobbles; clasts are more angular near base; shell fragments; brachiopod fossil; sand is slightly loamy near base.

322-366 (10.6-12.0)

no recovery; refused on rock (cobbles).

Auger Sample:

433-568 (14.2-18.6)

brown to dark brown (10YR4/3) coarse sand and gravel; strongly effervescent; many rounded pebbles, all sizes; few cobbles; few shell fragments; refused on cobbles.

Depth

cm(ft)

or Zone

Description

0-17 (0-.6)

A

very dark grayish brown (10YR3/2) silt loam; moderate, fine to medium, granular; friable; slightly effervescent; gradual lower boundary; lower boundary disturbed in coring; rootlets.

17-30 (.6-1.0)

C

brown to dark brown (10YR4/3) silt to silt loam; massive; very friable; very slightly effervescent; clear lower boundary; laminated; rootlets; few laminations are very dark grayish brown (10YR3/2).

30-90 (1.0-3.0)

2AC

black (10YR2/1) silt loam; mottles are common, fine, faint, brown (10YR5/3); moderate, fine to medium, granular; friable; very slightly effervescent; clear lower boundary; roots; few rootlets.

90-127 (3.0-4.2)

2C

very dark grayish brown (10YR3/2) silt; massive; very friable; very slightly effervescent; unknown lower boundary (end of tube); few laminations; few rootlets; some laminations are brown (10YR5/3); 5 cm inferred (no recovery).

127-143 (4.2-4.7)

3ACb

black (10YR2/1) silt loam; mottles are few, fine, faint, dark yellowish brown (10YR4/4); weak, medium, granular; very friable; slightly effervescent; abrupt lower boundary; few rootlets; very few pebbles.

143-151 (4.7-5.0)

3C

yellowish brown to dark yellowish brown (10YR5/4-4/4) loamy sand; single grain; loose; slightly to strongly effervescent; unknown lower boundary (end of tubes); oxidized; sand is fine; rootlets; small to medium pebbles common; 2 cm inferred (no recovery); refused on cobbles.

Auger Sample:

151-200 (5.0-6.6)

dark yellowish brown (10YR4/4) loamy sand; strongly to violently effervescent; many small pebbles; calcite crystals (1-4 mm across) throughout sample; recovery poor; refused on cobbles.

Depth

cm(ft)

or Zone

Description

0-35 (0-1.2)

Ap

black (10YR2/1) loam; mottles are few, fine, faint, brown (10YR5/3); weak, medium, granular; friable; strongly effervescent; clear lower boundary; few pebbles; several large pieces of red tile (pieces of tile were scattered on ground surface also); rootlets; compacted.

35-127 (1.2-4.2)

A

black (10YR2/1) loam; moderate, fine, granular; friable; strongly to violently effervescent; gradual lower boundary; roots; omnidirectional rootlets; sandier lens 71-76 cm; sandy; few pebbles; much of horizon was disturbed in coring; 8 cm inferred (no recovery).

127-143 (4.2-4.7)

AC

very dark grayish brown (10YR3/2) loam; massive; friable; strongly effervescent; gradual lower boundary; sandy; few small pebbles; few rootlets; few gastropod shells.

143-216 (4.7-7.1)

C

very dark grayish brown (10YR3/2) fine to medium sand; massive to single grain; loose; strongly effervescent; clear lower boundary; 13 cm stick caught in sample; lens of loamy sand 158-164 cm; few rootlets; few small pebbles; slightly loamy; 30 cm not recovered.

216-296 (7.1-9.7)

2CA

black (10YR2/1) silt loam; mottles are few, fine, faint, dark brown (7.5YR3/4) near base of horizon; massive; friable; strongly effervescent; clear lower boundary; carbon-rich; gastropod shells; 5 cm of gray sandy loam at base; few roots; few small pebbles; top 20 cm has fine sand instead of silt and is more of a sandy loam; blacker than A; 29 cm not recovered.

296-300 (9.7-9.8)

3C

brown (10YR5/3) medium to coarse sand; mottles are common, medium, distinct, dark yellowish brown (10YR4/6); single grain; loose; slightly effervescent; unknown lower boundary (end of tubes); few small pebbles; some oxidation.

300-336 (9.8-11.0)

no recovery; refused on sand; driller’s note: "sand fell out tube sample."

Auger Samples:

455-590 (14.9-19.4)

dark yellowish brown (10YR4/4) coarse sand and gravel; strongly effervescent; many small pebbles; few medium pebbles; few shell fragments; oxidized.

590-844 (19.4-27.7)

no recovery; wet sand.

851-986 (27.9-32.4)

yellowish brown (10YR5/4) fine to medium sand; strongly effervescent; driller’s note: "sand got dense, seized augers"; some coarse sand; a lot finer than 455-590 sample; oxidized.

Depth

cm(ft)

or Zone

Description

0-29 (0-1.0)

Ap

black (10YR2/1) silty clay loam; massive to weak, fine, granular; friable to firm; slightly to strongly effervescent; clear lower boundary; compacted; roots; rootlets.

29-55 (1.0-1.8)

A

black (10YR2/1) silty clay loam; mottles are few, fine, distinct, brown to yellowish brown (10YR5/3-5/4); moderate, medium, granular; clay coatings are thick, black (10YR2/1), discontinuous, coat few peds and line some root voids; friable to firm; slightly to strongly effervescent; abrupt lower boundary; many worm burrows; few silt lenses; omnidirectional rootlets.

55-64 (1.8-2.1)

C

black (10YR2/1) loam; massive; friable; strongly effervescent; clear lower boundary; many rounded pebbles; very little matrix; compacted fines directly beneath stone line.

64-86 (2.1-2.8)

2Ab

black (10YR2/1) clay-rich silt loam; mottles are very few, fine, faint, brown (10YR5/3); weak, medium, subangular blocky; clay coatings are thin, discontinuous, line root voids and a few ped faces; friable; strongly effervescent; clear lower boundary; vertical roots; omnidirectional rootlets; many root voids; compacted.

86-99 (2.8-3.3)

2ACb

black to very dark gray (10YR2/1-3/1) loam; mottles are very few, fine, faint, brown (10YR5/3); massive; friable; strongly effervescent; abrupt lower boundary; omnidirectional rootlets; lighter in color and sandier at base.

99-172 (3.3-5.6)

3Ab

black (10YR2/1) clay-rich silt loam; moderate to strong, medium, granular; clay coatings are thin, discontinuous, line root voids; friable; strongly to violently effervescent; gradual lower boundary; woody roots; omnidirectional rootlets; few gastropod shells; 5 cm inferred (no recovery).

172-196 (5.6-6.4)

3ACb

mottled very dark grayish brown (10YR3/2) and black (10YR2/1) clay-rich silt loam to loam; weak to moderate, medium, granular to massive; clay coatings are thin, discontinuous, line root voids; friable; violently effervescent; gradual lower boundary; few gastropod shells.

196-218 (6.4-7.2)

3C1

very dark grayish brown (10YR3/2) sandy loam; massive; friable; strongly effervescent; clear lower boundary; gastropod shells; sand is very fine; few worm burrows.

218-231 (7.2-7.6)

3C2

very dark grayish brown (10YR3/2) sandy loam to loamy sand; massive; friable; slightly effervescent; unknown lower boundary (end of tube); loamier near base; sandier at top; very few rootlets; few shell fragments.

231-254 (7.6-8.3)

no recovery.

254-271 (8.3-8.9)

4C3

brown to dark brown (10YR4/3) medium to coarse sand; single grain; loose; slightly effervescent; abrupt lower boundary; partly oxidized; shell fragments; few small pebbles.

271-300 (8.9-9.8)

5C4

very dark gray (10YR3/1) sandy loam; massive; friable; slightly to strongly effervescent; abrupt lower boundary; unoxidized; sand is generally fine to very fine; layer of rounded, medium-sized pebbles at top of horizon; many rootlets in this layer; soil is more organic; few shell fragments.

300-303 (9.8-9.9)

6C5

brown to dark brown (10YR4/3) medium to coarse sand; mottles are common, medium, distinct, dark brown to strong brown (7.5YR3/4-4/6); single grain; loose; slightly effervescent; unknown lower boundary (end of tubes); few shell fragments; similar to 4C3 horizon; some oxidation.

303-374 (9.9-12.3)

no recovery; refused in sand.

Auger Sample:

644-779 (21.1-25.6)

very dark brown (10YR2/2) sandy loam and gravel; strongly effervescent; poor recovery; matrix is clay-rich, almost a sandy clay loam; mostly gravel - small to large, very rounded, pebbles.

Depth

cm(ft)

or Zone

Description

0-19 (0-.6)

Ap

black (10YR2/1) silt loam; weak, medium, platy; granular at top; friable; strongly effervescent; clear lower boundary; roots.

19-43 (.6-1.4)

AC

black (10YR2/1) silt loam; weak, medium, platy to fine subangular blocky; friable; strongly effervescent; clear lower boundary; highly fractured; rootlets; horizon disturbed in coring; worm burrows/root voids filled with sediment.

43-72 (1.4-2.4)

2ACb

black (10YR2/1) silt-rich loam; mottles are few, fine, faint, brown to dark brown (10YR4/3); weak to moderate, fine, subangular blocky to medium granular; clay coatings are thin, discontinuous, line some root voids; friable; strongly effervescent; clear lower boundary; many rounded, medium-sized pebbles at base of horizon; rounded pebbles common throughout; few vertical roots; omnidirectional rootlets.

72-149 (2.4-4.9)

3Ab

black (10YR2/1) clay-rich silt loam to loam; moderate, medium, granular; clay coatings are thin, discontinuous, line root voids and coat some peds; friable; violently effervescent; gradual lower boundary; very few shell fragments; omnidirectional rootlets; top 25 cm are platy and fractured; 5 cm inferred (no recovery).

149-167 (4.9-5.5)

3ACb

very dark grayish brown (10YR3/2) loam; mottles are common, fine, faint, black (10YR2/1); massive; friable; violently effervescent; clear lower boundary; sandier at base; many worm burrows filled with black sediment; few omnidirectional rootlets; few shell fragments.

167-208 (5.5-6.8)

3C1

very dark grayish brown (10YR3/2) loamy sand; single grain; loose; violently effervescent; unknown lower boundary (end of tube); few shell fragments; sand is fine; few lenses of sandy loam; few rootlets near top of unit.

208-254 (6.8-8.3)

no recovery.

254-294 (8.3-9.7)

3C2

dark grayish brown (10YR4/2) medium sand; mottles are few, coarse, faint, yellowish brown (10YR5/4-5/6); single grain; loose; strongly effervescent; unknown lower boundary (end of tubes); coarser than 3C1; few lenses of dark gray (10YR4/1) loamy sand; few shell fragments.

294-327 (9.7-10.7)

no recovery; refused on sand.

Auger Sample:

368-503 (12.1-16.5)

brown to dark brown (10YR4/3) medium to coarse sand and gravel; strongly effervescent; many rounded pebbles, all sizes; few shell fragments.

Depth

cm(ft)

or Zone

Description

0-23 (0-.8)

Ap

black (10YR2/1) silt loam; weak, medium, granular; medium platy at base; friable; strongly effervescent; clear lower boundary; roots; rootlets; slightly compacted near base.

23-43 (.8-1.4)

AC1

very dark grayish brown (10YR3/2) silt loam; mottles are few, fine, distinct, yellowish red (5YR5/6); coarse platy to weak, medium, granular; friable; strongly effervescent; clear lower boundary; few laminated silt lenses; vertical roots; omnidirectional rootlets; compacted; recent sediments (PSA).

43-90 (1.4-3.0)

AC2

black (10YR2/1) silt loam to loam; mottles are few, fine, faint, brown (10YR5/3); weak, medium, granular to massive; friable; strongly effervescent; gradual lower boundary (lower boundary disturbed in coring); many rounded pebbles - small and medium-sized; sandier near base; fractured along horizontal (bedding?) planes at top; compacted at base; few gastropod shells.

90-133 (3.0-4.4)

2Ab

black (10YR2/1) loam; weak, fine to medium, granular; friable; strongly to violently effervescent; gradual lower boundary; few rounded pebbles at top of horizon; increasing sand content with depth; few gastropod shells near base; many small, vertical root voids; 5 cm inferred (no recovery).

133-157 (4.4-5.2)

2ACb

black (10YR2/1) sandy loam; massive; friable; strongly to violently effervescent; clear lower boundary; few gastropod shells; few rootlets; few small pebbles.

157-167 (5.2-5.5)

2C

very dark grayish brown (10YR3/2) loamy sand; massive to single grain; very friable to loose; strongly effervescent; abrupt lower boundary; shell fragments; gastropod shells; many fine rootlets.

167-178 (5.5-5.8)

3CA

very dark gray (10YR3/1) loam; massive to weak prismatic; clay coatings are thin, discontinuous, coat weak ped surfaces; friable; strongly effervescent; abrupt lower boundary; few gastropod shells; rootlets; peds are very weakly developed.

178-204 (5.8-6.7)

4C1

dark grayish brown (10YR4/2) fine to medium sand; single grain; loose; slightly effervescent; clear lower boundary; several lenses of black (10YR2/1) sandy loam approximately 4 cm thick; small rounded pebbles common; few large pebbles; few lenses of coarse sand; few shell fragments.

204-263 (6.7-8.6)

4C2

very dark grayish brown (10YR3/2) coarse sand and gravel; single grain; loose; strongly effervescent; unknown lower boundary (end of tubes); many rounded pebbles, small to large; black, slightly loamy lens near base; 46 cm not recovered; refused on sand.

Auger Samples:

437-572 (14.3-18.8)

dark grayish brown (10YR4/2) coarse sand and gravel; strongly effervescent; many small pebbles; few medium-sized to large pebbles; few shell fragments.

691-826 (22.7-27.1)

brown (10YR5/3) medium to coarse sand; strongly effervescent; finer grained than 437-572; very small pebbles common; few small to medium pebbles.

Depth

cm(ft)

or Zone

Description

0-39 (0-1.3)

Ap

black (10YR2/1) loam; weak, fine, granular to massive; friable; strongly to violently effervescent; clear lower boundary; many roots; lot of woody root debris at base of horizon; few small pebbles.

39-48 (1.3-1.6)

AC

very dark grayish brown (10YR3/2) silt loam; mottles are common, medium, distinct, brown (10YR5/3); massive to weak, medium, subangular blocky; clay coatings are thin, moderately continuous, line root voids; friable; strongly effervescent; abrupt lower boundary; brown (10YR5/3) silt lenses; roots; omnidirectional rootlets; laminated; fractured.

48-67 (1.6-2.2)

2Ab

black (10YR2/1) silt-rich loam; mottles are common, fine to medium, distinct, dark reddish brown (2.5YR3/4); weak to moderate, medium, granular; friable; strongly effervescent; clear lower boundary; large root at top of horizon; many oxidation coatings and mottles; rootlets.

67-104 (2.2-3.4)

2ACb1

black (10YR2/1) loam to sandy loam; massive to weak, fine, granular; friable; violently effervescent; gradual lower boundary; many intact gastropod shells; few rootlets; few horizontal roots; sandier lens near top.

104-158 (3.4-5.2)

2ACb2

very dark gray (10YR3/1) loam; mottles are few, fine, faint, dark yellowish brown (10YR4/4) near base of horizon; massive to weak, medium, granular; clay coatings are thin, moderately continuous, line root voids; friable; strongly effervescent; gradual lower boundary; many intact gastropod shells; rootlets; 5 cm inferred (no recovery).

158-173 (5.2-5.7)

2CA

dark gray (10YR4/1) sandy loam; massive; friable; strongly effervescent; abrupt lower boundary; gastropod shells; few very small pebbles; unoxidized.

173-278 (5.7-9.1)

2C