Geografie 2011, 116, 59-78

Applicability of quartz grains surface analysis to the study of the genesis of unlithified sediments

Lenka Křížová1, Marek Křížek1, Lenka Lisá2

1Univerzita Karlova v Praze, Přírodovědecká fakulta, katedra fyzické geografie a geoekologie, Albertov 6, 128 43 Praha 2, Czechia
2Geologický ústav, AV ČR, v. v. i., Rozvojová 269, 165 00 Praha 6, Czechia

Received February 2010
Accepted February 2011

This paper deals with genetic types of unlithified sediments and their characteristics with an emphasis on quartz grain surface microrelief. There are various physical-geographic agents in different sedimentary environments which play an important role in the origin of certain marks on the surface of sedimentary grains. As a result, studying the features of quartz grain surfaces enables us to determine the possible origin of sediments and landforms. Reference samples were chosen from geomorphological landforms of known origin: a moraine in the Labský Důl Valley, a debris flow in the Důl Bílého Labe Valley, a flood accumulation and deluvium from the Důl Bílého Labe Valley in the Krkonoše Mountains and eolian sediment from Klárov in Prague. Significant differences in surface micromorphology were found among these samples.


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