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Journal Article

Ice-Free Conditions on the Queen Charlotte Islands, British Columbia, at the Height of Late Wisconsin Glaciation

Barry G. Warner, Rolf W. Mathewes and John J. Clague
Science
New Series, Vol. 218, No. 4573 (Nov. 12, 1982), pp. 675-677
Stable URL: http://www.jstor.org/stable/1688621
Page Count: 3

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Topics: Glacial landforms, Silts, Coastal capes, Cliffs, Peat, Sediments, Sea level, Seas, Ice, Isostatic effects
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Ice-Free Conditions on the Queen Charlotte Islands, British Columbia, at the Height of Late Wisconsin Glaciation
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Abstract

New radiocarbon dates and plant macrofossil data establish that parts of the Queen Charlotte Islands, British Columbia, were ice-free during and subsequent to the late Wisconsin glacial maximum on the Pacific coast of Canada. A paleoecological investigation of dated sediments at Cape Ball has indicated that a varied flora consisting of terrestrial and aquatic plants was present there about 16,000 years ago. This finding provides support for the existence of a heretofore questioned biotic refugium on the Queen Charlotte Islands during the last glaciation. These results shed new light on problems of glacial chronology, climatic change, biogeography, and archeology along the western margin of North America.

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