New radiocarbon dates for early deglaciation from the southeastern Coast Mountains of British Columbia

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Abstract
Basal dates obtained on organic material from postglacial lacustrine sediments from four lakes in the Kwoiek Creek watershed, southern Coast Mountains of British Columbia, provide minimum dates of deglaciation. The dates obtained (12 255 ± 770, 11 485 ± 185, 10 385 ± 595, and 9640 ± 380 BP), at elevations 835–1120 m, suggest that extensive areas of the mountains of southern British Columbia were ice free prior to 11 500 years ago. This has implications for models of the regional deglaciation of the southern portion of the province.

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