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A
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0-2
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Dark brown (7.5YR3/2) clay; moderate fine and very fine granular structure; very friable, sticky, slightly plastic; abundant fine and very fine roots; medium acid (field pH 6.0); abrupt, wavy boundary. |
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AB
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2-16
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Dark reddish brown (5YR3/3) moist, dark reddish brown (5YR3/3) to reddish brown (2.5YR4/4) dry, clay; strong medium and fine subangular blocky with some granular structure in the top 4 cm; friable, sticky, plastic; common pieces of charcoal; many fine and very fine roots; strongly acid (field pH 5.5); abrupt, wavy boundary. |
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Bt1
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16-54
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Dark reddish brown (near 2.5YR3/4) moist, dark reddish brown (2.5YR3/4) dry, clay; moderate coarse subangular blocky breaking to medium and fine subangular blocky structure; firm, sticky, plastic; continuous very thin cutans in some pores; few strongly weathered rock fragments, few pieces of charcoal; few very fine roots; very strongly acid (field pH 4.5); clear, wavy boundary. |
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Bt2
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54-94
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Dark red (2.5YR3/6) clay; moderate medium and fine subangular blocky structure; friable to firm, sticky, slightly plastic; patchy thin cutans in pores; very few strongly weathered rock fragments; very few very fine roots; very strongly acid (field pH 4.5); gradual, wavy boundary. |
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Bt3
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94-110+
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Red (10YR4/6) clay; moderate medium and fine subangular blocky structure; firm, sticky, plastic; broken moderately thick cutans mainly on ped faces and in pores; very few very fine roots; very strongly acid (field pH 4.5). |
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