CGRG Bibliography of Canadian Geomorphology
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Author : Grubb, M.; Menounos, B.; and Clague, J.J.
Date : 2006.
Title : Late Pleistocene glacier advance in the Middle Coast Mountains, British Columbia.
Publication : Annual Meeting, Western Division of the Canadian Association of Geographers, March 10-11, 2006. Thompson Rivers University, Kamloops, British Columbia.
Issue : Abstract Volume.
Page(s) : 11.
Abstract
Extensive pre-Little Ice Age glacier deposits exist on the leeward side of the middle Coast Mountains of British Columbia. Numerous lateral and terminal moraines extend several kilometers from cirque basins and delimit ice extent many times greater than glacier extent during the Little Ice Age. A minimum limiting age of 9390 ± 40 14C yrs BP was obtained by radiocarbon dating a terrestrial macrofossil preserved in the basal sediments of a lake behind a large terminal moraine situated 3 km downvalley from Little Ice Age deposits. The average equilibrium line altitude (ELA) depression from contemporary glaciers to pre-Little Ice Age deposits is 275 m while the average ELA depression from contemporary glaciers to Little Ice Age deposits is 85 m. An ELA depression of 275 m translates into a 2 șC decrease in temperature.
Bibliography of Canadian Geomorphology