soil wedge
Link: http://w3id.org/permafrost/v/ipaglossary/t0303
Within: IPA Permafrost Glossary
Definition: A wedge-shaped body of soil that is different in structure and texture from the surrounding soil (see Figure 17g).
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soil wedge
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| Comment |
A soil wedge may be an ice-wedge cast (i.e., a feature of secondary filling), or a sand wedge (i.e., a feature of primary filling), or it may be produced by repeated formation of thermal contraction cracks in seasonally frozen ground followed by filling of the crack with soil. It is usually difficult to distinguish between soil wedges in the active layer, soil occupying cracks in seasonally frozen ground (i.e., in a non-permafrost environment), soil as original fillings in cracks in permafrost, and soil replacing ice wedges.
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| dcterms:source |
https://doi.org/10.4224/20386561
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