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Tag «soil layers»

Soil and its types

Regolith: Regolith is any solid but unconsolidated material laying on the top surface of the bedrock. Regolith includes soil, alluvium, and rock fragments weathered from the bedrock. The thickness of this mantle varies from nil over rock exposures to very deep in areas protected from erosion. Soil: Soil is the top layer of the regolith. …