Buried soil (Figure 20) - a photo on Flickriver

Buried soil (Figure 20)

            Buried soil.—A soil profile having one or more genetic horizons that is covered with a surface mantle of new soil material 50 cm or more thick. In essence, two soils are present—a new soil in the mantle and an older soil below that formed before the mantle was deposited. Special rules are given in chapter 4 of the Keys to Soil Taxonomysurface mantle of new soil material. A surface mantle of new soil material is a layer of “naturally deposited mineral material” that is largely unaltered, at least in the lower part. Since human-transported material it is not “naturally deposited”, it does not meet the technical definition of a “mantle of new soil material” even though buried.
 
Figure 20.—Examples of buried soils.
Left photo (natural deposition): The Atiras series (mixed, hyperthermic Typic Ustipsamments) consists of very deep, somewhat excessively drained, rapidly permeable soils that formed in sandy eolian deposits of Holocene age over loamy Quaternary alluvium. A buried soil starts at a depth of about 150 cm.
Right photo (human-transported material): An Anthroportic Udorthent formed by soil materials being deposited on an older Cecil soil (fine, kaolinitic, thermic Typic Kanhapludults).

Taken on: January 1, 2000

Tags:

Glossary of Soil Survey Terms

environment

soil

Soil Science

Soil Survey

Soil taxonomy

USDA-Natural Resources Conservation Service

USDA-NRCS

U.S. Soil Taxonomy

John A. Kelley

Craig Ditzler

Soil Correlation

Buried soil

Anthroportic

Anthroportic Udorthent

Anthroportic Udorthents « less

Sets appears in: • Glossary of Soil Survey Terms

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