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The side growth of lithalsas: Some comments on observations in northern québec
Author(s) -
Pissart A.
Publication year - 2010
Publication title -
permafrost and periglacial processes
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.867
H-Index - 76
eISSN - 1099-1530
pISSN - 1045-6740
DOI - 10.1002/ppp.704
Subject(s) - geology , permafrost , plateau (mathematics) , frost (temperature) , physical geography , geomorphology , paleontology , oceanography , geography , mathematics , mathematical analysis
Based on observations in northern Québec and Belgium, the author infers that lithalsas in northern Québec are modern analogues of the enclosed and ramparted depressions that occur on the Hautes Fagnes plateau, Belgium. It is hypothesised that the growth of these lithalsas occurs not only by vertical heave associated with ice segregation within mineral material but also by lateral frost thrusting. Copyright © 2010 John Wiley & Sons, Ltd.