sand wedge
Link: http://w3id.org/permafrost/v/ipaglossary/t0283
Within: IPA Permafrost Glossary
Definition: A wedge-shaped body of sand produced by filling of a thermal contraction crack with sand either blown in from above or washed down the walls of the crack (see Figure 17h).
| Term |
sand wedge
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| Comment |
Sand wedges are wedges of primary filling since, at the time of their formation, they are filled with mineral soil. Upon thawing of the permafrost, there is little or no void space left, and any subsequent downward movement of material into the wedge is negligible. A sand wedge is not a replacement feature (or ice-wedge cast) associated with the melting of an ice wedge. It is a type of soil wedge showing marked vertical fabric and laminations.
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| dcterms:source |
https://doi.org/10.4224/20386561
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| skos:hiddenLabel |
tesselation
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