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Preferred term

soil horizon

Definition

[GEMET] Distinctive successive layers of soil produced by internal redistribution processes. Conventionally the layers have been divided into A, B and C horizons. The A horizon is the upper layer, containing humus and is leached and/or eluviated of many minerals. The B horizon forms a zone of deposition and is enriched with clay minerals and iron/aluminium oxides from the A layer. The C layer is the parent material for the present soil and may be partially weathered rock, transported glacial or alluvial material or an earlier soil.

Broader concept

layer

Narrower concepts

A horizon
B horizon
C horizon
charcoal
O horizon
R horizon

Entry terms

soil layer

Note

[controlled by ] Staszewski 08.06.2013

Creator

0000-0003-0631-8231

URI

http://vocabs.lter-europe.net/EnvThes/39

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Created 2/21/13, last modified 8/23/19

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