ѵԢͧشԹѴ


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ͪشԹ  :  ҵ  Tha Tum (Tt)
 
 
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͸Ժª鹴Թ
Ap
0-11
Brown (7.5YR5/2) loam; few fine distinct strong brown (7.5YR5/8) mottles; massive; slightly hard, friable, slightly sticky, slightly plastic; many very fine roots; strongly acid (field pH 5.5); clear, smooth boundary.
AB
11-23
Pale brown (10YR6/3) loam; common medium distinct yellowish red (5YR5/8) mottles; massive; slightly hard, friable, slightly sticky, slightly plastic; few very fine roots; strongly acid (field pH 5.5); gradual, smooth boundary.
Bt1
23-55
Dark reddish gray (5YR4/2) clay; common fine distinct red (2.5YR4/8) mottles; massive breaking to fine subangular blocky structure; firm, very sticky, very plastic; continuous thick clay coating on ped faces and in pores; few very fine roots; plinthite 20-30% (by volume); very strong acid (field pH 5.0); gradual, smooth boundary.
Bt2
55-87
Reddish gray (5YR5/2) clay; common medium prominent red (2.5YR4/8) and common fine and medium distinct yellowish red (5YR5/8) mottles, strong fine and medium subangular blocky structure; firm, very sticky, very plastic; continuous thick clay coating on ped faces and in pores; few very fine roots; plinthite 5-8%; very strongly acid (field pH 5.0) clear, smooth boundary.
Bt3
87-148
Pinkish gray (5YR6/2) clay; many medium and coarse red (10R4/6) and many fine and medium strong brown, (7.5YR5/8) mottles; massive breaking to coarse subangular blocky structure; firm, sticky, plastic; patchy thin clay coating on ped faces and in pores; plinthite 3-5%; very strongly acid (field pH 5.0); clear, smooth boundary.
2C
148-180
Pinkish gray (5YR7/2) sand; common medium distinct yellowish red (5YR5/8) mottles; nonsticky, nonplastic; strong acid (field pH 5.5); (this horizon described by Auguring).