Term: Quartz microtexture of the periglacial environment Class:  
 vernacular   (0%)
Created 6 June 2017
Last modified 6 June 2017
Contributed by GCW Glossary


Definition: Micro textural characteristics of the quartz grains (sand size) that exist in sediments found in the Periglacial Environment. Their characteristics are related to cryogenic processes like frost weathering, sorting, cryoturbation and friction intergranular movements due to freezing and thawing cycles in sedimentary deposits. The main characteristics are: grains with a high degree of roughness, angular, conchoidal fractures, chatter marks, straight and curved lines, and graduated arches. There are also micro phenomena in terms of deposition and dilution.  TrombottoGeocryology