CGRG Bibliography of Canadian Geomorphology
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Author : Goldthwait, R.P.
Date : 1966.
Title : Evidence from Alaskan glaciers of major climatic changes. World Climate from 8000 to 0 B.C
Publication : Internat. Symposium, London, 1966, Proc. London, Royal Meteorol. Society
Issue :
Page(s) : 40-53.
Abstract
Detailed studies have been made in Glacier Bay on the wet side of the mountains of southeastern Alaska, and the Icefield Ranges on the dry side in Yukon. In unconsolidated drift of Muir Inlet and Lituya Bay, basal Wisconsin boulder clay lies on marine clays; radiocarbon dates, 8400 to 7100 B.C., parallel glacier history farther northwest. Kaskawulsh Glacier on the dry side had retreated far by this time, with great alluvial fans; loess contained bones indicating dry climate 2 degrees cooler than Glacier Bay. Throughout hypsithermal time, glaciers were smaller in all areas except northwestern Glacier Bay; all recessed valleys filled with outwash. A bog above Kaskawulsh Glacier records pollen changes back to wetter conditions in 1380 B.C. Glaciers extending into Glacier Bay impounded a lake in Muir Inlet dated 2200 to 250 B.C. Neoglaciation was climaxed in a series of pulses mostly between A.D. 1500 and 1850.
Bibliography of Canadian Geomorphology