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Term: Thaw unconformity Class:  
 vernacular   (0%)
Created 6 June 2017
Last modified 6 June 2017
Contributed by GCW Glossary

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Definition: A boundary sometimes identified in perennially frozen ground, representing the base of a relict active layer, as well as the corresponding earlier permafrost table.  NSIDCCryosphere 

A boundary sometimes identified in perennially frozen ground, representing the base of a relict active layer, as well as the corresponding earlier permafrost table  IPAPermafrost 

A boundary sometimes identified in perennially Frozen Ground, representing the base of a Relict Active Layer, as well as the corresponding earlier Permafrost Table. A Thaw Unconformity may be recognized by differences in Ice Contents, stable isotope contents, and heavy mineral and pollen assemblages above and below the unconformity.  TrombottoGeocryology 

 GCW 
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