CGRG Bibliography of Canadian Geomorphology
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Author : Harris, S.A.
Date : 1985
Title : Evidence for the nature of early Holocene climate, paleogeography, High Plains, Alberta, Canada
Publication : Arctic and Alpine Research.
Issue : 17(1):
Page(s) : 49-67
Abstract
With the retreat of the Laurentide into northern Saskatchewan at about 11,000 BP, upslope weather conditions caused greatly increased precipitation in the Foothills and High Plains. Stagnant ice masses reactivated and expanded; some advanced along the contours, blocking valleys such as that of the Bow River and caused proglacial lakes to form. Glacial Lake Calgary persisted from 11,000 to 8100 BP. Maximum precipitation occurred about 11,000 to 10,000 BP, but enhanced precipitation more than offset the effects of the Hypsithermal interval and persisted until after the deposition of the Mazama ash. Thereafter conditions became drier. The Neoglacial changes were much less marked. At 11,000 BP, the Foothills and High Plains supported tundra vegetation with subalpine forest at lower elevations. There was an abrupt rise in temperature, and by 10,000 BP, the prairie grasslands had entered the High Plains from the south. After 7000 BP, the grasslands had spread to their maximum extent .
Bibliography of Canadian Geomorphology