CGRG Bibliography of Canadian Geomorphology
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Author : Evans, D.J.; and Rogerson, R.J.
Date : 1988
Title : A radiocarbon-dated gelifluction lobe in the Nachvak Fiord area, northern Labrador, Canada
Publication : Earth Surface Processes and Landforms
Issue : 13(7):
Page(s) : 657-662.
Abstract
Radiocarbon dates obtained on organic materials overridden by a gelifluction lobe allow some estimate of past gelifluction rates for a site near sea level in northern Labrador. The calculated mean gelifluction rate for the last 400 years is in the order of 8 mm/yr, somewhat higher than the average gelifluction rate described from other locations in the Canadian Arctic. The lobe contains two lithostratigraphic units: an inner diamicton, probably representing a buried gelifluction lobe, overlain by a silt/clay unit which may have been emplaced abruptly as a solifluction sheet. Mean creep rates for these units were in the order of 5 mm/yr and 15 mm/yr respectively. The area is presently subsiding, and transgressive beach material overlies terrestrial organics which are approximately 300 years old.
Bibliography of Canadian Geomorphology