Type D is a minor soil type distinguished by a shallow surface horizon (less than 23 cm thick) which rests abruptly on yellow friable clay. A bleached subsurface (A2) horizon is absent.
Typical Profile
Surface | ||
A | 0-15 cm | Greyish brown to dark grey-brown (10YR4/3, 5/3, 5/4) loam; sometimes with a trace of buckshot; sharply separated from: |
Subsoil | ||
B1 | 15-52 cm | Yellow-brown to yellow (10YR to 2.5Y6/4-7/8) diffusely mottled friable clay, with olive and brownish red subordinate colours, usually somewhat brighter in the lower part of the horizon; an occasional piece of buckshot; grading into: |
B2 | 52-82 cm | Yellow-brown and grey mottled friable clay; at depths varying from 67 to 90 cm; usually sharply separated from: |
B3 | 82-120 cm | Grey, yellow-grey and brown, mottled clay; intractable and dense; scattered black inclusions; slight calcium carbonate irregularly present. |