Search
Search
USGS Thesaurus
Search
Categories
>
topics
>
earth characteristics
>
rocks and deposits
>
unconsolidated deposits
soil horizons
Layers in soil defined by physical, chemical, biological, or mineralogical properties which vary with depth.
This category is also used for
A horizon
,
B horizon
, and
C horizon
Subtopics
(none)
See also
biological soil crusts
soil formation
soil sciences
JSON
XML
