Appendix Unit Horizon Depth (m) Description S0 Bw 0-0.8 Brownish black (7.5YR 3/2) silty clay; moderate, coarse prismatic structure; many pores; diffused boundary BC 0.8-1.15 Dark brown (7.5YR 3/4) silty clay; weak, coarse prismatic structure; diffused boundary L1 C1 1.15-3.15 Brown (7.5YR 4/4) silty clay; friable; weak, coarse granular structure; many pores; smooth, gradual boundary C2 3.15-4.65 Dark brown (7.5YR 3/3) silty clay; friable to firm; weak, coarse granular structure; common carbonate pseudomycelia; smooth, diffused boundary C3 4.65-7.00 Dark brown (7.5YR 3/3) silty clay; friable; weak, coarse granular structure; some carbonate pseudomycelia; smooth, clear boundary S1 A 7.00-7.70 Brownish black (7.5YR 3/2) silty clay; moderate, medium prismatic structure; some carbonate pseudomycelia; gradual boundary BA 7.70-8.20 Brownish black (7.5YR 3/2) silty clay; moderate, medium subangular blocky structure; some, thin clay skins; smooth, gradual boundary Bt1 8.20-9.10 Very dark reddish brown (5YR 2/3) silty clay; moderate, coarse subangular blocky structure; common, thin clay skins (mixed with organic matter); smooth, gradual boundary Bt2 9.10-10.20 Dark reddish brown (5YR 3/3) silty clay; strong, medium subangular blocky structure; many, thin clay skins; smooth, gradual boundary BC 10.20-10.60 Brownish black (7.5YR 3/2) silty clay; moderate, medium prismatic structure; some clay skins; smooth, gradual boundary L2 C 10.60-11.60 Yellowish brown (10YR 5/6) silty clay; massive; diffused boundary A 11.60-13.70 Brown (10YR 4/4) silty clay; some pseudomycelia; massive; diffused boundary C 13.70-14.60 Dull yellowish brown (10YR 5/4) silty clay; massive; diffused boundary A 14.60-15.80 Brown (10YR 4/4) silty clay; some pseudomycelia; massive; diffused boundary C 15.80-17.70 Dull yellowish brown (10YR 5/4) silty clay; massive; diffused boundary S2-1 A 17.70-18.05 Dull reddish brown (7.5 YR 3/2) silty clay; weak, granular structure; some carbonate pseudomycelia; smooth, gradual boundary Bt1 18.05-19.45 Bright reddish brown (5YR 5/6) silty clay; moderate, coarse subangular blocky structure; common, thin clay skins; smooth, gradual boundary BC 19.45-19.80 Brown (10YR 4/4) silty clay; some, thin clay skins; smooth, gradual boundary S2-2 A 19.80-20.20 Dark brown (7.5 YR 3/4) silty clay; weak, coarse granular structure; many pores; gradual boundary Bt2 20.20-21.20 Bright brown (7.5 YR 5/6) silty clay; moderate, coarse subangular blocky structure; few, discontinuous clay skins (5YR 4/4); gradual boundary CB 21.20-21.50 Brown (10YR 4/6) silty clay; few, discontinuous clay skins; gradual boundary L3 C 21.50-24.00 Yellowish Brown (10YR 5/6) silty clay; massive; diffused boundary S3 A 24.00-24.40 Orange (7.5YR 6/6) silty clay; massive to weak, coarse granular structure; some carbonate pseudomycelia; many pores; gradual boundary Bt1 24.40-25.20 Dark reddish brown (5YR 3/3) silty clay; moderate, medium prismatic structure; some, thin clay skins; gradual boundary Bt2 25.20-25.55 Dull reddish brown (5YR 4/4) silty clay; moderate, coarse subangular structure; few, discontinuous clay skins; gradual boundary Bt3 25.55-26.35 Dark reddish brown (5YR 3/4) silty clay; strong, medium prismatic structure; many, thick clay skins; gradual boundary L4 CB 26.35-31.10 Yellowish Brown (10 YR 5/6) silty clay; massive; smooth, clear boundary Unit Horizon Depth (m) Description S4 A 31.10-31.70 Brown (7.5 YR 4/4) silty clay; weak, coarse granular structure; some carbonate pseudomycelia; smooth, diffused boundary BA 31.70-32.45 Dark brown (7.5 YR 3/3) silty clay; moderate, medium subangular blocky structure; some, discontinuous clay skins; smooth, gradual boundary Bt 32.45-33.20 Dark reddish brown (5YR 3/3) silty clay; strong, coarse prismatic structure; many, thick clay skins (2.5 YR 3/2); smooth, gradual boundary CB 33.20-33.50 Brown (7.5YR 4/6) silty clay; weak, coarse subangular blocky structure; some, thin clay skins; diffused boundary L5 C 33.50-37.80 Yellowish Brown (10YR 5/6) silty clay; massive; smooth, clear boundary S5-1 A 37.80-38.30 Dull reddish brown (5YR 4/3) silty clay; moderate, medium granular structure; common carbonate pseudomycelia; smooth, gradual boundary Bt 38.30-39.65 Dark reddish brown (5YR 3/3) silty clay; strong, fine prismatic structure; many, thick clay skins; diffused boundary BC 39.65-40.45 Dark brown (7.5 YR 3/4) silty clay; moderate, medium subangular structure; common, thick clay skins (5YR 2/3); diffused boundary S5-2 Bt-1 40.45-40.95 Brown ( 7.5 YR 4/4 ) silty clay; moderate, medium prismatic structure; some, discontinuous clay skins (5YR 3/4); smooth, diffused boundary Bt-2 40.95-41.80 Dark brown ( 7.5 YR 3/3 ) silty clay; strong, medium prismatic structure; common, thin clay skins (5YR 3/3); gradual boundary BC 41.80-42.00 Dark brown (7.5 YR 3/4) silty clay; weak, coarse subangular structure; some, thin clay skins S5-3 Bt 42.00-42.80 Dull reddish brown ( 5YR 4/3 ) silty clay; moderate, coarse, prismatic structure; common, thick clay skins (5YR 3/3); gradual boundary BC 42.80-43.10 Dull reddish brown ( 5YR 4/3 ) silty clay; weak, coarse subangular blocky structure; some clay skins (5YR 3/3); smooth, diffused boundary L6 CB 43.10-45.10 Brown (7.5 YR 4/6) silty clay; massive; wavy, diffused boundary C 45.10-49.60 Yellowish brown (10YR 5/6) silty clay; massive; smooth, clear boundary S6 A 49.60-49.75 Brown (7.5YR 4/6) silty clay; moderate, medium subangular blocky structure; smooth, gradual boundary Bt 49.75-50.65 Dark brown (7.5YR 3/4) silty clay; strong, medium prismatic structure; common, thin clay skins (5YR 2/2); smooth, gradual boundary L7 C 50.65-51.15 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary A 51.15-51.85 Bright brown (7.5YR 5/6) silty clay; weak, granular structure; some carbonate pseudomycelia; diffused boundary C 51.85-54.20 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary S7 A 54.20-54.80 Bright brown (7.5YR 5/6) silty clay; weak, coarse subangular blocky structure; few, thin clay and Fe-Mn skins; gradual boundary Bt 54.80-55.90 Brown (7.5 YR 4/6) silty clay; strong, medium subangular blocky structure; common, thin clay skins; gradual boundary L8 CB 55.90-56.20 Bright brown (7.5 YR 5/6) silty clay; massive; common, thin clay skins ( 5YR 3/6 ) on ped surfaces; wavy, gradual boundary C 56.20-58.25 Yellowish brown (10YR 5/6) silty clay; massive; wavy, clear boundary S8 BA 58.25-58.75 Brown (7.5YR 4/4) silty clay; moderate, medium subangular blocky structure; few, discontinuous clay skins; gradual boundary Bt 58.75-59.95 Dull reddish brown (5YR 4/4) silty clay; strong, medium subangular blocky structure; many, thin clay skins (5YR 3/4); some Fe-Mn mottlings; gradual boundary Unit Horizon Depth (m) Description L9 C 59.95-68.00 Yellowish brown (10YR 5/6) silt ; massive; wavy, gradual boundary Cca 68.00-68.60 Carbonate nodules cemented together; abrupt, clear boundary S9 Bt 68.60-69.80 Dull reddish brown (5YR 4/3) silty clay; weak, medium subangular blocky structure; few, discontinuous clay skins; gradual boundary L10 C 69.80-70.50 Dull reddish brown (7.5YR 4/4) silty clay; weak, medium granular structure; gradual boundary Bw 70.50-71.30 Dull reddish brown (7.5 YR 4/4) silty clay; weak, medium granular structure; some carbonate pseudomycelia; some Fe-Mn mottlings; smooth, diffused boundary C 71.30-73.00 Yellowish brown (10YR 5/6) silty clay; massive; wavy, clear boundary S10 Bw 73.00-74.30 Dull reddish brown (7.5 YR 4/4) silty clay; moderate, coarse granular structure; few, discontinuous clay skins; gradual boundary L11 C 74.30-75.40 Yellowish brown (10YR 5/6) silty clay; massive; clear boundary S11 BA 75.40-75.80 Bright brown (7.5YR 5/6) silty clay; moderate, coarse subangular blocky structure; few, discontinuous clay skins ( 5YR 4/4 ); smooth, gradual boundary Bt 75.80-77.10 Bright brown (7.5 YR 5/6) silty clay; moderate, coarse subangular blocky structure; abundant Fe-Mn mottlings ( 5YR 3/4 ); smooth, gradual boundary L12 C 77.10-77.80 Yellowish brown (10YR 5/6) silty clay; massive; wavy, clear boundary S12 Bw 77.80-78.70 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; a few clay skins; some Fe-Mn mottlings; smooth, gradual boundary L13 C 78.70-80.80 Yellowish brown (10YR 5/6) silty clay; massive; smooth, clear boundary S13 BA 80.80-81.20 Reddish brown (5YR 4/6) silty clay; weak, subangular blocky structure; some Fe-Mn mottlings Bt 81.20-82.10 Dark reddish brown (5YR 3/6) silty clay; moderate, coarse subangular blocky structure; common thin clay skins; smooth, diffused boundary L14 C 82.10-84.80 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary S14 A 84.80-85.30 Brown (7.5YR 4/4) silty clay; massive to weak, coarse granular structure; diffused boundary Bt 85.30-86.10 Dark reddish brown (5YR 3/4) silty clay; moderate, coarse subangular blocky structure; some, thin clay skins; smooth, gradual boundary BC 86.10-86.40 Dull reddish brown (7.5YR 4/4) silty clay; weak, coarse subangular blocky structure; gradual boundary L15 C 86.40-91.90 Yellowish brown (10YR 5/6) silt; massive; diffused boundary S15 A 91.90-92.50 Brown (7.5 YR 4/6) silty clay; weak, coarse subangular blocky structure; some Fe-Mn mottlings; diffused boundary Bw 92.50-93.60 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; few, discontinuous clay skins; smooth, clear boundary L16 CB 93.60-93.90 Brown (10YR 4/6) silty clay; massive; some carbonate pseudomycelia; diffused boundary Cca 93.90-94.30 Large carbonate nodules C 94.30-96.00 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary Unit Horizon Depth (m) Description S16 A 96.00-96.50 Brown (10YR 4/6) silty clay; weak,coarse granular structure; diffused boundary Bw 96.50-97.70 Brown (7.5 YR 4/4) silty clay; weak, coarse, subangular blocky structure; few, discontinuous clay skins; diffused boundary L17 C 97.70-98.40 Brown (10YR 4/6) silty clay; massive; some nodules; diffused boundary S17 A 98.40-99.15 Brown (7.5YR 4/6) silty clay; weak, coarse subangular blocky structure; some carbonate pseudomycelia; diffused boundary BA 99.15-99.75 Brown (7.5YR 4/4) silty clay; weak, coarse subangular blocky structure; a few, thin clay skins; smooth, diffused boundary Bt 99.75-100.45 Dull reddish brown (5YR 4/4) silty clay; moderate, coarse subangular blocky structure; some, discontinuous clay skins; some Fe-Mn mottlings; smooth, clear boundary L18 Cca 100.45-100.75 Carbonate nodules C 100.75-101.20 Bright brown (7.5YR 5/6) silty clay; massive to weak, coarse granular structure; smooth, diffused boundary S18 A 101.20-101.55 Brown (7.5YR 4/6) silty clay; weak, coarse subangular blocky structure; clear boundary Bw 101.55-102.40 Brown (7.5YR 4/4) silty clay; weak, coarse subangular blocky structure; few, discontinuous clay skins; wavy, clear boundary L19 Cca 102.40-103.10 Very large cemented carbonate nodules S19 A 103.10-103.45 Brown ( 7.5YR 4/4 ) silty clay; weak, coarse subangular blocky structure; diffused boundary BA 103.45-103.75 Dull reddish brown (5YR 4/4) silty clay; weak, medium subangular blocky structure; some, thin clay skins; gradual boundary Bt 103.75-104.45 Dark reddish brown (5YR 3/4) silty clay; moderate, medium subangular blocky structure; common, thin clay skins; common Fe-Mn skins ( 5YR 2/1 ); smooth, diffused boundary BC 104.45-104.75 Brown (7.5YR 4/6) silty clay; massive; few, thin clay skins, wavy, clear boundary L20 Cca 104.75-105.50 Carbonate nodules C 105.50-105.70 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary S20 A 105.70-106.30 Bright brown (7.5YR 5/6) silty clay; weak, coarse subangular blocky structure; diffused boundary Bt 106.30-107.05 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; some, thin clay skins; some Fe-Mn mottlings; smooth, gradual boundary L21 Cca 107.05-108.25 Carbonate nodules C 108.25-109.70 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary S21 A 109.70-110.00 Bright brown (7.5YR 5/6) silty clay; weak, coarse granular structure; a few Fe-Mn mottlings; diffused boundary Bw 110.00-110.70 Brown (7.5YR 4/6) silty clay; weak, coarse granular structure; a few Fe-Mn mottlings; wavy, clear boundary L22 Cca 110.70-111.50 Carbonate nodules cemented together C 111.50-112.40 Brown (10YR 4/6) silty clay; massive; smooth, diffused boundary Unit Horizon Depth (m) Description S22 A 112.40-112.75 Brown ( 7.5YR 4/4 ) silty clay; weak, coarse subangular blocky structure; diffused boundary Bw 112.75-113.90 Dull reddish brown (5YR 4/4) silty clay; weak, coarse granular blocky structure; few, thin clay skins; gradual boundary L23 Cca 113.90-114.30 Carbonate nodules; groundmass as C below C 114.30-114.80 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary S23 A 114.80-115.20 Brown (7.5YR 4/6) silty clay; weak, coarse subangular blocky structure; diffused boundary Bw 115.20-116.80 Dull reddish brown (5YR 4/4) silty clay; weak, coarse subangular blocky structure; some, thin clay skins; diffused boundary BC 116.80-117.20 Brown (7.5YR 4/6) silty clay; massive; wavy, clear boundary L24 Cca 117.20-117.60 Carbonate nodules cemented together C 117.60-118.30 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary A 118.30-119.00 Brown (7.5YR 4/6) silty clay; weak, coarse subangular blocky structure; diffused boundary C 119.00-122.40 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary S24 A 122.40-122.80 Brown (7.5YR 4/6) silty clay; massive; diffused boundary Bw 122.80-123.80 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; some carbonate pseudomycelia; diffused boundary L25 Cca 123.80-124.40 Carbonate nodules cemented together C 124.40-126.00 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary A 126.00-126.60 Brown (7.5YR 4/6) silty clay; weak, coarse subangular blocky structure; diffused boundary Bw 126.60-127.40 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; some Fe-Mn mottlings; some carbonate pseudomycelia; diffused boundary Cca 127.40-128.60 Carbonate nodules cemented together S25 A 128.60-128.95 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; smooth, diffused boundary Bw 128.95-130.05 Dull reddish brown (5YR 4/4) silty clay; weak, coarse subangular blocky structure; few, thin clay skins; smooth, diffused boundary Bt 130.05-131.15 Dark reddish brown (5YR 3/4) silty clay; strong, fine subangular blocky structure; some, thin clay skins; common Fe-Mn mottlings; smooth, gradual boundary L26 Cca 131.15-131.55 Carbonate nodules; groundmass as C below C 131.55-132.05 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary A 132.05-133.05 Brown (7.5YR 4/6) silty clay; weak, coarse subangular blocky structure; smooth, diffused boundary C 133.05-133.55 Yellowish brown (10YR 5/6) silty clay; massive; wavy, clear boundary Cca 133.55-133.90 Carbonate nodules cemented together S26 A 133.90-134.30 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; few clay skins; diffused boundary Bw 134.30-135.40 Dark reddish brown ( 5YR 3/6 ) silty clay; weak, coarse subangular blocky structure; few clay skins; diffused boundary Bt 135.40-136.50 Dark reddish brown (5YR 3/4) silty clay; moderate, medium subangular blocky structure; common, thin clay skins; wavy, clear boundary Unit Horizon Depth (m) Description L27 Cca 136.50-138.50 Carbonate nodules; groundmass as C below C 138.50-140.00 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary A 140.00-140.70 Brown (7.5YR 4/6) silty clay; weak, coarse subangular blocky structure C 140.70-141.00 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary A 141.00-141.70 Brown (7.5YR 4/6) silty clay; weak, coarse subangular blocky structure; diffused boundary C 141.70-142.00 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary A 142.00-142.70 Brown (7.5YR 4/6) silty clay; weak, coarse subangular blocky structure; smooth, diffused boundary C 142.70-145.10 Yellowish brown ( 10YR 5/6 ) silty clay; massive; smooth, diffused boundary S27 A 145.10-145.40 Brown (7.5 YR 4/6) silty clay; weak, coarse subangular blocky structure; diffused boundary Bw 145.40-146.20 Dull reddish brown ( 5YR 4/4 ) silty clay; weak, coarse subangular blocky structure; few clay skins; some Fe-Mn mottlings; wavy, clear boundary L28 Cca 146.20-146.60 Carbonate nodules; groundmass as C below C 146.60-147.30 Yellowish brown (10YR 5/6) silty clay; massive; wavy, clear boundary S28 Bw 147.30-148.30 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; few Fe-Mn mottlings; wavy, clear boundary L29 Cca 148.30-149.30 Carbonate nodules; groundmass as C below C 149.30-150.60 Yellowish brown (10YR 5/6) silty clay; massive; smooth, clear boundary S29 A 150.60-151.20 Dull reddish brown (5YR 4/4) silty clay; massive; diffused boundary Bw 151.20-151.95 Dark reddish brown ( 5YR 3/6 ) silty clay; weak, coarse subangular blocky structure; some, thin clay skins; diffused boundary L30 Cca 151.95-152.35 Carbonate nodules; groundmass as C below C 152.35-153.20 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary S30 A 153.20-153.50 Dull reddish brown (5 YR 4/4) silty clay; strong, medium subangular blocky structure; common, thin clay skins; diffused boundary Bt1 153.50-154.40 Dull reddish brown (2.5YR 4/4) silty clay; moderate, medium subangular blocky structure; Bca 154.40-154.80 Reddish brown (5YR 4/6) silty clay; weak, subangular blocky structure; some nodules Bt2 154.80-155.50 Dark reddish brown (5YR 3/4) silty clay; moderate, medium subangular blocky structure; some clay skins; gradual boundary L31 Cca 155.50-155.80 Carbonate nodules; groundmass as C below C 155.80-157.10 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary S31 A 157.10-157.35 Bright reddish brown (5YR 5/6) silty clay; weak, coarse subangular blocky structure; diffused boundary BA 157.35-157.70 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; some carbonate pseudomycelia; smooth, gradual boundary Bt 157.70-158.50 Dark reddish brown (5YR 3/4) silty clay; moderate, medium subangular blocky structure; some, thin clay skins; smooth, diffused boundary Unit Horizon Depth (m) Description L32 Cca 158.50-159.20 Carbonate nodules cemented together A 159.20-160.30 Brown (7.5YR 4/6) silty clay; weak, coarse subangular blocky structure; diffused boundary C 160.30-162.80 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary A 162.80-164.00 Brown (7.5YR 4/6) silty clay; weak, coarse subangular blocky structure; diffused boundary C 164.00-168.30 Yellowish brown (10YR 5/6) silty clay; massive; smooth, diffused boundary S32 A 168.30-168.60 Bright reddish brown (5YR 5/6) silty clay; weak, subangular blocky structure; some carbonate pseudomycelia; smooth, diffused boundary Bw 168.60-169.80 Dark reddish brown (5YR 3/6) silty clay; weak, subangular blocky structure; some carbonate pseudomycelia; diffused boundary L33 Cca 169.80-170.80 Carbonate nodules; groundmass as C below C 170.80-176.80 Yellowish brown (10YR 5/6) silt; massive; wavy, diffused boundary Red Clay Unit Horizon Depth (m) Description RC1 A 176.80-177.20 Dark reddish brown (5YR 3/6) silty clay; weak, coarse subangular blocky structure; smooth, diffused boundary Bt 177.20-178.10 Dark reddish brown ( 5YR 3/4 ) silty clay; weak, coarse subangular blocky structure; common,thin clay skins; wavy, gradual boundary Cca 178.10-178.30 Carbonate nodules; groundmass as C below C 178.30-179.15 Dark brown (7.5YR 3/4) silty clay; massive; wavy, clear boundary RC2 Bt 179.15-179.85 Dark reddish brown (5YR 3/4) silty clay; moderate, coarse subangular blocky structure; many, thick clay skins; some Fe-Mn films; wavy, diffused boundary Cca 179.85-180.25 Carbonate nodules; groundmass as C below C 180.25-181.05 Brown (7.5 YR 4/4) silty clay; massive; wavy, clear boundary Cca 181.05-181.75 Carbonate nodules; groundmass as C below C 181.75-182.50 Brown (7.5 YR 4/4) silty clay; massive; smooth, gradual boundary RC3 A 182.50-182.90 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; diffused boundary Bt1 182.90-184.40 Dark reddish brown (2.5YR 3/3) silty clay; friable; strong, fine subangular blocky structure; many, thick clay skins; common Fe-Mn films; smooth, diffused boundary Bt2 184.40-185.10 Dark reddish brown (5YR 3/6) silty clay; moderate, medium subangular blocky structure; many, thin clay skins; a few Fe-Mn films; diffused boundary Bt3 185.10-185.80 Dark reddish brown (5YR 3/6) silty clay; friable; strong, medium subangular blocky structure; many, thick clay skins; common Fe-Mn films; wavy, clear boundary Bca 185.80-185.90 Carbonate nodules; groundmass as Bt3 above RC4 Bt1 185.9-186.65 Dark reddish brown (5YR 3/6) silty clay; moderate, medium subangular blocky structure; common, thin clay skins; wavy, gradual boundary Bca 186.65-186.95 Carbonate nodules; groundmass as Bt2 below Bt2 186.95-187.35 Dark reddish brown ( 5YR 3/6 ) silty clay; moderate, medium subangular blocky structure; common, thin clay skins; wavy, gradual boundary Cca 187.35-187.65 Carbonate nodules; groundmass as C below C 187.65-188.50 Brown (7.5YR 4/4) silty clay; massive; wavy, clear boundary Unit Horizon Depth (m) Description RC5 Bw1 188.50-188.65 Reddish brown (5YR 4/6) silty clay; massive; a few Fe-Mn films; wavy, clear boundary Bca 188.65-188.95 Carbonate nodules; groundmass as Bw2 below Bw2 188.95-189.35 Reddish brown (5YR 4/6) silty clay; massive; a few Fe-Mn films; smooth, clear boundary Bca 189.35-189.55 Carbonate nodules; groundmass as Bw3 below Bw3 189.55-189.75 Dark reddish brown (5YR 3/6) silty clay; massive; wavy, gradual boundary Bca 189.75-190.10 Carbonate nodules; groundmass as Bw4 below Bw4 190.10-190.40 Dark reddish brown (5YR 3/6) silty clay; massive; wavy, clear boundary Cca 190.40-191.40 Carbonate nodules cemented together RC6 A 191.40-191.80 Reddish brown (5YR 4/6) silty clay; massive; smooth, diffused boundary Bt 191.80-192.80 Dark reddish brown (5YR 3/6) silty clay; moderate, coarse subangular blocky structure; common, thin clay skins; some Fe-Mn films; wavy, gradual boundary Bca 192.80-193.30 Carbonate nodules; groundmass as Bt above Cca 193.30-194.00 Carbonate nodules; background is dull reddish brown (5YR 4/4) silty clay; massive RC7 A 194.00-194.30 Dark reddish brown ( 5YR 3/6 ) silty clay; weak, coarse subangular blocky structure; smooth, diffused boundary Bt 194.30-195.30 Dark reddish brown (2.5YR 3/4) silty clay; friable; strong, fine subangular blocky structure; common thick clay skins; some Fe-Mn films; diffused boundary Bca 195.30-196.10 Carbonate nodules; groundmass as Bt above RC8 Bw1 196.10-196.75 Dull reddish brown (5YR 4/4) silty clay; massive; wavy, gradual boundary Bca 196.75-197.10 Carbonate nodules; groundmass as Bw1 above Bw2 197.10-197.55 Dull reddish brown (5YR 4/4) silty clay; massive; wavy, diffused boundary Bca 197.55-197.95 Carbonate nodules; groundmass as Bw2 above Bw3 197.95-198.40 Dull reddish brown ( 5YR 4/4 ) silty clay; weak, coarse subangular blocky structure; a few Fe-Mn films; wavy, clear boundary Bca 198.40-198.60 Carbonate nodules; groundmass as Bw3 above Bw4 198.60-199.15 Dark brown (7.5YR 3/4) silty clay; massive; wavy, diffused boundary Bca 199.15-199.60 Carbonate nodules; groundmass as Bw4 above RC9 A 199.60-199.90 Dull reddish brown ( 5YR 4/4 ) silty clay; weak, coarse subangular blocky structure; smooth, diffused boundary Bt1 199.90-201.30 Dull reddish brown (5YR 4/4) silty clay; weak, coarse subangular blocky structure; some,thin clay skins; wavy, diffused boundary Bca 201.30-201.65 Carbonate nodules; groundmass as Bt1 above Bt2 201.65-202.00 Reddish brown (5YR 4/6) silty clay; massive; few, thin clay skins; wavy, diffused boundary Bca 202.00-202.50 Carbonate nodules; groundmass as Bt2 above A 202.50-202.70 Reddish brown (5YR 4/6) silty clay; massive; smooth, diffused boundary Bt3 202.70-203.50 Dark reddish brown (5YR 3/6) silty clay; massive; few, thin clay skins; diffused boundary Bca 203.50-203.80 Carbonate nodules; groundmass as Bt3 above RC10 Bt1 203.80-204.40 Dark reddish brown (5YR 3/4) silty clay; moderate, medium subangular blocky structure; common, thick clay skins; some Fe-Mn films; wavy, diffused boundary Bca 204.40-204.50 Carbonate nodules; groundmass as Bt2 below Bt2 204.50-205.00 Dark reddish brown (5YR 3/6) silty clay; moderate, coarse subangular blocky structure; some, thin clay skins; wavy, diffused boundary Unit Horizon Depth (m) Description RC10 Bca 205.00-205.20 Carbonate nodules; groundmass as Bt3 below Bt3 205.20-205.60 Dark reddish brown (5YR 3/6) silty clay; moderate, coarse subangular blocky structure; some, thin clay skins; wavy, diffused boundary Bca 205.60-205.85 Carbonate nodules; groundmass as Bt4 below Bt4 205.85-206.10 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; a few clay skins; wavy, diffused boundary Bca 206.10-206.30 Carbonate nodules; groundmass as Bt4 above Bt5 206.30-206.60 Dark reddish brown (5YR 3/6) silty clay; moderate, coarse subangular blocky structure; some, thin clay skins; wavy, diffused boundary Cca 206.60-206.90 Carbonate nodules; groundmass as Bw1 above RC11 Bw1 206.90-207.55 Dull reddish brown ( 5YR 4/4 ) silty clay; weak, coarse subangular blocky structure; a few clay skins; smooth, diffused boundary Bca 207.55-207.85 Carbonate nodules; groundmass as Bw2 above Bw2 207.85-208.30 Dull reddish brown ( 5YR 4/4 ) silty clay; weak, coarse subangular blocky structure; a few clay skins; smooth, diffused boundary Bca 208.30-208.60 Carbonate nodules; groundmass as Bw3 above Bw3 208.60-208.90 Dull reddish brown ( 5YR 4/4 ) silty clay; weak, coarse subangular blocky structure; a few clay skins; wavy, diffused boundary Bca 208.90-209.05 Carbonate nodules Bw4 209.05-210.15 Dull reddish brown ( 5YR 4/4 ) silty clay; weak, coarse, subangular blocky structure; few clay skins; diffused boundary Bca 210.15-210.40 Carbonate nodules; groundmass as Bw4 above RC12 A 210.40-214.90 Bright reddish brown (5YR 5/6) silty clay; many carbonate pseudomycelia; diffused boundary RC13 BA 214.40-214.90 Reddish brown (5YR 4/6) silty clay; weak, medium subangular, blocky structure; some, thin clay skins; some carbonate nodules; wavy, diffused boundary Bt1 214.90-216.00 Dark reddish brown (5YR 3/6) silty clay; strong, fine subangular blocky structure; common, thin clay skins; some Fe-Mn films; many nodules; wavy, diffused boundary Bca 216.00-216.40 Carbonate nodules; groundmass as Bt1 above Bt2 216.40-217.10 Dark reddish brown (2.5YR 3/3) silty clay; strong, fine subangular blocky structure; many, thick clay skins; common Fe-Mn films; wavy, diffused boundary Bca 217.10-217.35 Carbonate nodules; groundmass as Bt3 below Bt3 217.35-218.05 Dark reddish brown (5YR 3/6) silty clay; moderate, coarse subangular blocky structure; some Fe-Mn films; common, thin clay skins; smooth, diffused boundary Bca 218.05-218.45 Carbonate nodules; groundmass as Bt4 below Bt4 218.45-219.55 Dark reddish brown (5YR 3/6) silty clay; moderate, coarse subangular blocky structure; some Fe-Mn films; common, thin clay skins; wavy, diffused boundary Bca 219.55-220.75 Carbonate nodules; groundmass as Bt5 below Bt5 220.75-221.15 Dark reddish brown (5YR 3/6) silty clay; moderate, coarse subangular blocky structure; some Fe-Mn films; common, thin clay skins; wavy, diffused boundary Bca 221.15-221.95 Carbonate nodules; groundmass as Bt5 above C 221.95-222.60 Brown (7.5YR 4/4) silty clay; massive; smooth, clear boundary RC14 Bt1 222.60-223.40 Dark reddish brown (2.5YR 3/4) silty clay; strong, medium subangular blocky structure; many, thick clay skins; common Fe-Mn films; wavy, diffused boundary Bca 223.40-223.70 Carbonate nodules; Groundmass as Bt1 above Unit Horizon Depth (m) Description RC14 Bt2 223.70-224.40 Dark reddish brown (2.5YR 3/3) silty clay; strong, fine subangular blocky structure; many, thick clay skins; common Fe-Mn films; wavy, diffused boundary Bca 224.40-224.70 Carbonate nodules; groundmass as Bt2 above Bt3 224.70-225.15 Dark reddish brown (2.5YR 3/3) silty clay; strong, fine subangular blocky structure; many, thick clay skins; many Fe-Mn films; wavy, diffused boundary Bca 225.15-225.60 Carbonate nodules; groundmass as Bt3 above Bt4 225.60-226.15 Dark reddish brown (2.5YR 3/3) silty clay; strong, fine subangular blocky structure; many, thick clay skins; many Fe-Mn films; smooth, diffused boundary Bca 226.15-226.75 Carbonate nodules; groundmass as Bt4 above Bt5 226.75-227.15 Dark reddish brown (5YR 3/6) silty clay; strong, fine subangular blocky structure; common thin clay skins; common Fe-Mn films; smooth, diffused boundary Bca 227.15-227.85 Carbonate nodules; groundmass as Bt5 above Bt6 227.85-228.65 Dark reddish brown (2.5YR 3/3) silty clay; strong, fine subangular blocky structure; many, thick clay skins; many Fe-Mn films; wavy, diffused boundary Bca 228.65-229.10 Carbonate nodules; groundmass as Bt6 above RC15 Bt1 229.10-229.80 Dark reddish brown (5YR 3/4) silty clay; strong, fine subangular blocky structure; many, thick clay skins; common Fe-Mn films; wavy, diffused boundary Bca 229.80-230.20 Carbonate nodules; groundmass as Bt1 above Bt2 230.20-230.75 Dark reddish brown (5YR 3/4) silty clay; moderate, medium subangular blocky structure; many, thin clay skins; common Fe-Mn films; wavy, diffused boundary Bca 230.75-231.10 Carbonate nodules; groundmass as Bt2 above Bt3 231.10-231.55 Reddish brown (5YR 4/6) silty clay; moderate, medium subangular blocky structure; many, thin clay skins; common Fe-Mn films; wavy, diffused boundary Bca 231.55-232.25 Carbonate nodules; groundmass as Bt3 above Bt4 232.25-233.65 Dark reddish brown (5YR 3/4) silty clay; strong, medium subangular blocky structure; many, thin clay skins; common Fe-Mn films; wavy, diffused boundary Bca 233.65-233.75 Carbonate nodules; groundmass as Bt4 above Bt5 233.75-234.70 Dark reddish brown (5YR 3/6) silty clay; moderate, medium subangular blocky structure; common, thin clay skins; common Fe-Mn films; wavy, diffused boundary Bca 234.70-234.90 Carbonate nodules; groundmass as Bt5 above Bt6 234.90-235.40 Dark reddish brown (5YR 3/6) silty clay; moderate, medium subangular blocky structure; common, thin clay skins; many Fe-Mn films; wavy, diffused boundary Bca 235.40-235.70 Carbonate nodules; groundmass as Bt6 above Bt7 235.70-235.90 Reddish brown (5YR 4/6) silty clay; moderate, medium subangular blocky structure; common, thin clay skins; common Fe-Mn films; wavy, diffused boundary Bca 235.90-236.30 Carbonate nodules; groundmass as Bt7 above Bt8 236.30-236.80 Dark reddish brown (5YR 3/6) silty clay; strong, fine subangular blocky structure; many, thin clay skins; many Fe-Mn films; wavy, diffused boundary Bca 236.80-237.50 Carbonate nodules; groundmass as Bt8 above Bt9 237.50-238.00 Dark reddish brown (5YR 3/4) silty clay; moderate, medium subangular blocky structure; common, thin clay skins; common Fe-Mn films; wavy, diffused boundary Bca 238.00-238.60 Carbonate nodules; groundmass as Bt9 above RC16 Bt1 238.60-239.30 Dull reddish brown (5YR 4/4) silty clay; moderate, coarse, subangular blocky structure; some, thin clay skins; common Fe-Mn films; wavy, diffused boundary Cca 239.30-240.10 Carbonate nodules; groundmass as Bt1 above Bt2 240.10-240.50 Reddish brown ( 5YR 4/6 ) silty clay; moderate, coarse, subangular blocky structure; some clay skins; some Fe-Mn films; wavy, diffused boundary Unit Horizon Depth (m) Description RC16 Bca 240.50-240.60 Carbonate nodules; groundmass as Bt2 above RC17 Bt1 240.60-241.40 Dull reddish brown (2.5 YR 4/4) silty clay; strong, medium subangular blocky structure; many, thick clay skins; many Fe-Mn films; wavy, diffused boundary Bca 241.40-241.75 Carbonate nodules; groundmass as Bt1 above Bt2 241.75-242.05 Dark reddish brown (5 YR 3/6) silty clay; moderate, medium subangular blocky structure; many, thick clay skins; many Fe-Mn films; wavy, diffused boundary Bca 242.05-242.20 Carbonate nodules; groundmass as Bt2 above Bt3 242.20-242.85 Dark reddish brown (5YR 3/4) silty clay; strong, fine subangular blocky structure; many, thick clay skins; common Fe-Mn films; wavy, diffused boundary Bca 242.85-243.55 Carbonate nodules; groundmass as Bt3 above Bt4 243.55-244.15 Dark reddish brown (5YR 3/4) silty clay; strong, fine subangular blocky structure; many, Fe-Mn films; many, thick clay skins; wavy, diffused boundary Bca 244.15-244.55 Carbonate nodules; groundmass as Bt4 above Bt5 244.55-245.10 Dull reddish brown (2.5YR 4/4) silty clay; strong, medium subangular blocky structure; common, thin clay skins; many Fe-Mn films; wavy, diffused boundary Bca 245.10-246.30 Carbonate nodules; groundmass as Bt5 above Bt6 246.30-247.10 Dark reddish brown (5YR 3/6) silty clay; moderate, medium subangular blocky structure; common, thin clay skins; common Fe-Mn films; smooth, diffused boundary Bt7 247.10-248.00 Dull reddish brown ( 5YR 4/4 ) silty clay; moderate, medium, subangular blocky structure; many thick clay skins; some Fe-Mn films; gradual boundary Bt8 248.00-248.80 Dark reddish brown ( 5YR 3/6 ) silty clay; strong, fine subangular blocky structure; many, thick clay skins; common Fe-Mn films; wavy, diffused boundary Bca 248.80-249.00 Carbonate nodules; groundmass as Bt8 above RC18 Bt 249.00-249.90 Dark reddish brown (5YR 3/6) silty clay; moderate, coarse subangular blocky structure; some, thin clay skins; some Fe-Mn films; wavy, gradual boundary Bca 249.90-250.10 Carbonate nodules; groundmass as Bt above RC19 Bt 250.10-250.90 Dull reddish brown (2.5YR 4/4) silty clay; strong, fine subangular blocky structure; many, thick clay skins; common Fe-Mn films; wavy, gradual boundary Bca 250.90-251.10 Carbonate nodules; groundmass as Bt above RC20 Bt 251.10-251.60 Dark reddish brown (5YR 3/6) silty clay; moderate, medium subangular blocky structure; some, thin clay skins; some Fe-Mn films; wavy, diffused boundary Bca 251.60-252.60 Carbonate nodules cemented together RC21 Bt1 252.60-253.40 Dark reddish brown (2.5YR 3/3) silty clay; strong, fine subangular blocky structure; many, thick clay skins; common Fe-Mn films; wavy, diffused boundary Bca 253.40-254.10 Carbonate nodules; groundmass as Bt1 above Bt2 254.10-254.75 Dark reddish brown (2.5YR 3/4) silty clay; strong, fine subangular blocky structure; many, thick clay skins; some Fe-Mn films; wavy, diffused boundary Bca 254.75-254.90 Carbonate nodules; groundmass as Bt2 above Bt3 254.90-255.20 Dark reddish brown (5YR 3/6) silty clay; moderate, medium subangular blocky structure; many, thick clay skins; some Fe-Mn films; wavy, diffused boundary Bca 255.20-255.40 Carbonate nodules; groundmass as Bt3 above Bt4 255.40-255.80 Dark reddish brown ( 5YR 3/6 ) silty clay; moderate, medium subangular blocky structure; many, thick clay skins; some Fe-Mn films; wavy, diffused boundary Bca 255.80-256.20 Carbonate nodules; groundmass as Bt4 above Unit Horizon Depth (m) Description RC21 Bt5 256.20-256.50 Dark reddish brown (5YR 3/6) silty clay; moderate, medium subangular blocky structure; many, thick clay skins; wavy, gradual boundary Bca 256.50-256.60 Carbonate nodules; groundmass as Bt5 above Bt6 256.60-256.95 Dark reddish brown (5YR 3/6) silty clay; moderate, medium subangular blocky structure; many, thin clay skins, some Fe-Mn films, wavy, gradual boundary Bca 256.95-257.30 Carbonate nodules; groundmass as Bt6 above Bt7 257.30-257.90 Dark reddish brown (5YR 3/6) silty clay; strong, fine subangular blocky structure; many, thick clay skins, common Fe-Mn films; wavy, gradual boundary Bca 257.90-258.05 Carbonate nodules; groundmass as Bt7 above Bt8 258.05-258.50 Dark reddish brown (5YR 3/6) silty clay; moderate, medium subangular blocky structure; common, thick clay skins; some Fe-Mn films; wavy, gradual boundary Bca 258.50-258.70 Carbonate nodules; groundmass as Bt8 above Bt9 258.70-258.90 Dark reddish brown (5YR 3/6) silty clay; moderate, medium subangular blocky structure; many, thick clay skins; common Fe-Mn films; wavy, gradual boundary Bca 258.90-259.70 Carbonate nodules; groundmass as Bt9 above RC22 Bt1 259.70-260.15 Reddish brown ( 5YR 4/6 ) silty clay; moderate, coarse subangular blocky structure; common, thin clay skins; some Fe-Mn films; wavy, gradual boundary Bca 260.15-260.30 Carbonate nodules; groundmass as Bt1 above Bt2 260.30-260.55 Reddish brown (5YR 4/6) silty clay; moderate, coarse subangular blocky structure; common, thin clay skins; diffused boundary Bca 260.55-260.95 Carbonate nodules; groundmass as Bt2 above Bt3 260.95-261.55 Dark reddish brown (5YR 3/6) silty clay; moderate, coarse subangular blocky structure; many, thin clay skins; diffused boundary Bca 261.55-261.70 Carbonate nodules; groundmass as Bt3 above Bt4 261.70-262.05 Dark reddish brown (5YR 3/6) silty clay; moderate, coarse subangular blocky structure; many, thin clay skins; diffused boundary Bca 262.05-262.20 Carbonate nodules; groundmass as Bt4 above Bt5 262.20-262.30 Dull reddish brown (5YR 4/4) silty clay; moderate, coarse subangular blocky structure; many, thin clay skins; diffused boundary Bca 262.30-262.45 Carbonate nodules; groundmass as Bt5 above Bt6 262.45-262.80 Dull reddish brown (5YR 4/4) silty clay; moderate, coarse subangular blocky structure; some, thin clay skins; diffused boundary Bca 262.80-263.10 Carbonate nodules; groundmass as Bt6 above RC23 Bw1 263.10-263.30 Dark reddish brown (5YR 3/6) silty clay; massive; few, thin clay skins; clear boundary Bca 263.30-263.65 Carbonate nodules; groundmass as Bw1 above Bw2 263.65-263.90 Dark reddish brown (5YR 3/6) silty clay; massive; few, thin clay skins; wavy, gradual boundary Bca 263.90-264.20 Carbonate nodules; groundmass as Bw2 above Bw3 264.20-264.50 Dark reddish brown (5YR 3/6) silty clay; massive; few, thin clay skins; wavy, clear boundary Bca 264.50-264.80 Carbonate nodules; groundmass as Bw3 above RC24 A1 264.80-265.90 Bright brown (7.5YR 5/6) silty clay; massive; diffused boundary Bca 265.90-266.05 Carbonate nodules cemented together A2 266.05-269.05 Bright reddish brown (5YR 5/6) silty clay; massive; smooth diffused boundary Bw 269.05-271.35 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; some, Fe-Mn mottling; diffused boundary Bca 271.35-271.50 Carbonate nodules; groundmass as Bw above Unit Horizon Depth (m) Description RC25 Bt1 271.50-272.70 Dark reddish brown (5YR 3/6) silty clay; moderate, medium subangular blocky structure; some, thin clay skins; some Fe-Mn films; wavy, diffused boundary Bca 272.70-272.90 Carbonate nodules; groundmass as Bt1 above Bt2 272.90-273.75 Dark reddish brown (5YR 3/4) silty clay; weak, coarse subangular blocky structure; some Fe-Mn films; wavy, diffused boundary Bca 273.75-274.00 Carbonate nodules; groundmass as Bt2 above Bt3 274.00-274.95 Dark reddish brown (5YR 3/4) silty clay; moderate, medium subangular blocky structure; many, thin clay skins; some Fe-Mn films; wavy, diffused boundary Bca 274.95-275.10 Carbonate nodules Bt4 275.10-275.75 Dull reddish brown (5YR 4/4) silty clay; weak, coarse subangular blocky structure; some thin, clay skins; few Fe-Mn films; wavy, gradual boundary Bca 275.75-276.00 Carbonate nodules; groundmass as Bt4 above Bt5 276.00-276.90 Dark reddish brown (5YR 3/6) silty clay; weak, coarse subangular blocky structure; common, thin clay skins; few Fe-Mn films, wavy, gradual boundary Bca 276.90-277.30 Carbonate nodules; groundmass as Bt5 above Bt6 277.30-277.80 Dark reddish brown (5YR 3/4) silty clay; moderate, medium subangular blocky structure; common, clay skins; some Fe-Mn films; wavy, diffused boundary Bca 277.80-278.10 Carbonate nodules; groundmass as Bt6 above RC26 Bw1 278.10-278.25 Dull reddish brown ( 5YR 4/4 ) silty clay; weak, coarse subangular blocky structure; few, thin clay skins; wavy, clear boundary Bca 278.25-278.45 Carbonate nodules; groundmass as Bw1 above Bw2 278.45-278.65 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; few clay skins, wavy, clear boundary Bca 278.65-278.85 Carbonate nodules; groundmass as Bw2 above Bw3 278.85-279.05 Dark reddish brown (5YR 3/6) silty clay; weak, coarse subangular blocky structure; some, thin clay skins; wavy, clear boundary Bca 279.05-279.85 Carbonate nodules; groundmass as Bw3 above Bw4 279.85-280.40 Dull reddish brown ( 5YR 4/4 ) silty clay; weak, coarse subangular blocky structure; few, discontinuous clay skins; wavy, diffused boundary Bca 280.40-280.50 Carbonate nodules; groundmass as Bw4 above RC27 Bt1 280.50-280.95 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; some, thin clay skins; some Fe-Mn films; wavy, gradual boundary Bca 280.95-281.35 Carbonate nodules; groundmass as Bt1 above Bt2 281.35-282.20 Dark reddish brown (5YR 3/6) silty clay; weak, coarse subangular blocky structure; many, thin clay skins; some Fe-Mn films; wavy, gradual boundary Bca 282.20-282.60 Carbonate nodules; groundmass as Bt2 above RC28 Bw1 282.60-283.30 Dull reddish brown ( 5YR 4/4 ) silty clay; weak, coarse subangular blocky structure; few, discontinuous clay skins; wavy, diffused boundary Bca 283.30-283.40 Carbonate nodules; groundmass as Bw1 above Bw2 283.40-283.55 Dull reddish brown (5YR 4/4) silty clay; weak, coarse subangular blocky structure; some Fe-Mn mottlings; clear boundary Bca 283.55-283.65 Carbonate nodules; groundmass as Bw2 above Bw3 283.65-284.20 Dull reddish brown (5YR 4/4) silty clay; moderate, medium subangular blocky structure; some, discontinuous clay skins; some Fe-Mn mottlings; wavy, diffused boundary Bca 284.20-284.35 Carbonate nodules; groundmass as Bw3 above Bw4 284.35-284.50 Bright reddish brown (5YR 5/6) silty clay; weak, medium subangular blocky structure; wavy, gradual boundary Bca 284.50-284.65 Carbonate nodules; groundmass as Bw4 above Unit Horizon Depth (m) Description RC28 Bw5 284.65-284.95 Bright reddish brown ( 5YR 5/8 ) silty clay; weak, coarse subangular blocky structure; some, discontinuous clay skins; some Fe-Mn mottlings; wavy, clear boundary Bca 284.95-285.15 Carbonate nodules; groundmass as Bw5 above Bw6 285.15-285.25 Bright brown ( 7.5YR 5/6 ) silty clay; weak, coarse subangular blocky structure; some, discontinuous clay skins; clear boundary Bca 285.25-285.35 Carbonate nodules; groundmass as Bw6 above Bw7 285.35-285.60 Bright brown (7.5YR 5/6) silty clay; weak, coarse subangular blocky structure; few clay skins; wavy, gradual boundary Bca 285.60-285.75 Carbonate nodules; groundmass as Bw7 above Bw8 285.75-286.35 Bright reddish brown (5YR 5/6) silty clay; weak, coarse subangular blocky structure; some, discontinuous clay skins; few Fe-Mn films; diffused boundary Bca 286.35-286.45 Carbonate nodules; groundmass as Bw8 above Bw9 286.45-286.80 Dull reddish brown (5YR 4/4) silty clay; weak, coarse subangular blocky structure; few clay skins; some Fe-Mn films; wavy, gradual boundary Bca 286.80-287.20 Carbonate nodules; groundmass as Bw8 above Bw10 287.20-287.65 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; few, thin clay skins; wavy, gradual boundary Bca 287.65-287.75 Carbonate nodules; groundmass as Bw10 above Bw11 287.75-288.05 Bright reddish brown (5YR 5/6) silty clay; weak, coarse subangular blocky structure; some Fe-Mn mottlings, wavy, gradual boundary Bca 288.05-288.25 Carbonate nodules; groundmass as Bw11 above Bw12 288.25-288.70 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; few, thin clay skins; smooth, diffused boundary RC29 Bw1 288.70-291.10 Reddish brown (5YR 4/6) silty clay; massive to weak, coarse subangular blocky structure; few Fe-Mn mottlings; wavy, gradual boundary Bca 291.10-291.30 Carbonate nodules; groundmass as Bw1 above Bw2 291.30-294.10 Dull reddish brown (5YR 4/4) silty clay; weak, coarse subangular blocky structure; few clay skins; diffused boundary Bca 294.10-294.80 Carbonate nodules; groundmass as Bw2 above Bw3 294.80-295.20 Dull reddish brown (5YR 4/4) silty clay; weak, coarse subangular blocky structure; few clay skins; wavy, diffused boundary Bca 295.20-295.50 Carbonate nodules; groundmass as Bw3 above Bw4 295.50-297.50 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; few clay skins; diffused boundary RC30 Bt 297.50-300.10 Reddish brown (5YR 4/6) silty clay; moderate, medium subangular blocky structure; some, thin clay skins; some Fe-Mn films; smooth, gradual boundary Bca 300.10-300.40 Carbonate nodules cemented together RC31 Bw1 300.40-301.10 Reddish brown (5YR 4/6) silty clay; massive; diffused boundary Bca 301.10-302.90 Carbonate nodules; groundmass as Bw1 above Bw2 302.90-303.20 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; few Fe-Mn films; wavy, clear boundary Bca 303.20-303.60 Carbonate nodules; groundmass as Bw2 above Bw3 303.60-303.90 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; some Fe-Mn mottlings, wavy, diffused boundary Bca 303.90-304.70 Carbonate nodules cemented together Bw4 304.70-305.90 Reddish brown (5YR 4/6) silty clay; weak, coarse subangular blocky structure; few, thin clay skins; common Fe-Mn films