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ͪشԹ  :  ظ  Ayutthaya (Ay)
 
 
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Apg
0-21
Dark gray (10YR4/1) heavy clay; many fine distinct strong brown (7.5YR5/8) and prominent yellowish red (5YR5/8) mottles in root channels and ped faces; moderate medium subangular blocky structure; firm; few pressure faces; common very fine roots; moderately acid (field pH 6.0); clear, smooth boundary.
Bssg1
21-45/50
Very dark gray (10YR3/1) heavy clay; many fine prominent red (2.5YR4/8) and distinct dark brown (7.5YR4/4) mottles; moderate medium subangular blocky structure breaking to fine block; firm, sticky, plastic; common slickensides; few very fine roots; strongly acid (field pH 5.5); clear, wavy boundary.
Bssg2
45/50-90
Light brownish gray (10YR6/2) heavy clay; many fine distinct yellowish brown (10YR5/8), brownish yellow (10YR6/8), many fine and medium prominent red (2.5YR4/8) and large spot of very dark gray (10YR3/1); moderate fine subangular blocky structure; few slickensides; many pressure faces; few very fine roots; patches with many fine gypsum crystals; very strongly acid (field pH 5.0).
Bg1
90-145
Light brownish gray (10YR6/2) heavy clay; many fine distinct brownish yellow (10YR6/8), many fine and medium prominent weak red (7.5R4/4) and red (10R5/8) mottles; gypsum crystals more than 10% by volume; very strongly acid (field pH 4.5).
Bjg
145-200
Grayish brown (10YR5/2) nearly ripe clay; many medium distinct reddish yellow (7.5YR6/8), prominent weak red (7.5R4/4), common medium distinct pale yellow (2.5Y7/4) mottles; common gypsum; very strongly acid (field pH 4.5).
Bg2
200-230
Grayish brown (10YR5/2) nearly ripe clay; common medium and coarse distinct brownish yellow (10YR6/8), pale yellow (2.5Y7/4) mottles; strongly acid (field pH 5.5).
Cg1
230-250
Dark gray (5Y4/1) half ripe clay; moderately acid (field pH 6.0).
Cg2
250-300
Dark gray (5Y4/1) to dark greenish gray (5G4/1) half ripe clay; moderately alkaline (field pH 8.0).