|
ª×èͪÑé¹´Ô¹ |
¤ÇÒÁÅÖ¡(«Á.) |
¤Ó͸ԺÒªÑé¹´Ô¹ |
|
|
|
A
|
0-18
|
Black (10YR2/1) clay; strong fine and medium subangular blocky structure; the horizon is friable but aggregates are firm, sticky, plastic; few subangular gravels of hard basalt; abundant very fine and medium roots; neutral (field pH 7.0); clear, smooth boundary. |
|
|
|
Bw
|
18-30/37
|
Very dark brown (10YR2/2) clay; strong medium and fine subangular blocky structure; the horizon is friable but aggregates are firm, sticky, plastic; frequent subangular basalt gravels and many coarse sand size, yellow weathering basalt fragments; abundant very fine and medium roots; mildly alkaline (field pH 7.5); abrupt, irregular boundary. |
|
|
|
R
|
30/37+
|
Gray, hard basalt with very dark brown (10YR2/2) clay in cracks; the rocks have a skin of weathered material 0.5 to 1 mm thick; common fine and very fine roots; occur in cracks; slightly acid (field pH 6.5). |
|
|
|
|
|
