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Ap
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0-18
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Mixed black (10YR2/1) and dark brown (10YR4/3) loam; humusify; weak granular structure; sticky and plastic; many fine roots; many charcoal fragments; strongly react with a-dipyridyl but not bentizine; extremely acid (pH 3.8); clear wavy boundary. |
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Bg1
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18-37
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Mixed light gray (10YR6/1) light brownish gray (10YR6/2) yellowish brown (10YR5/6) and dark gray (10YR4/1-2) silty clay loam; prismatic structure; sticky and plastic; many fine and medium roots; common fine mica flakes; organic matter coating along cracks; strongly react with a-dipyridyl but not bentizine; extremely acid (pH 3.7); clear wavy boundary. |
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Bg2
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37-63
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Brown (7.5YR5/2-4) clay loam to silty clay loam; indicating buried A, few yellow (2.5Y7/6) jarosite mottles and common fine strong brown (7.5YR5/6) mottles along roots channels; weak coarse and very coarse prismatic structure; sticky and plastic; patchy very dark gray (7.5YR3/0) organic matter (leaf fossil); strongly react with a dipyridyl but not bentizine; extremely acid (pH 3.6); clear wavy boundary. |
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Bg3
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63-80
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Mixed dark grayish brown (10YR4/2) and olive gray (5Y4/2) very ripening clay loam (silty clay loam); many yellow (2.5Y7/6) jarosite mottles patchy along root; massive and weak very coarse prismatic structure; sticky and plastic; many fine and medium brown (7.5YR4/4) roots, partially decayed; some sand pocket; strongly react with a-dipyridyl but not bentizine; extremely acid (pH 3.6); clear irregular boundary. |
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Cg1
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80-110
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Mixed dark gray (5Y4/1) and olive gray (5Y4/2) half ripe silty clay loam; massive; sticky and plastic; many fine and medium roots, partially decayed; many fine mica flakes; strongly react with a- dipyridyl but not bentizine; extremely acid (pH 3.6); clear irregular boundary. |
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Cg2
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110-150
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Mixed dark gray (5Y4/1) and olive gray (5Y4/2) unripe (half ripe) silty loam; massive; sticky, plastic; many fine and medium roots, partially decayed; many fine mica flakes; strongly reduced, strongly react with a-dipyridyl but not bentizine; strongly acid (pH 5.1). |
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