Late-glacial climate in the Maritimes Region, Canada, reconstructed from mutual climatic range analysis of fossil Coleoptera |
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| Authors: | RANDALL F MILLER SCOTT A ELIAS |
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| Institution: |
a Steinhammer Palaeontology Laboratory, New Brunswick Museum, Saint John, New Brunswick, Canada
b Institute of Arctic and Alpine Research, University of Colorado, Boulder, Colorado, USA |
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| Abstract: | Mean July and January temperatures are reconstructed from radiocarbon-dated fossil beetle assemblages from late-glacial sites in the Maritimes Region of eastern Canada. Fossil-bearing sediments date from 12?700 14 C yr BP (14?950 cal yr BP) to younger than 10?800 14 C yr BP (12?730 cal yr BP), spanning a period which includes stratigraphic, palynological, chironomid and coleopteran evidence for a climatic deterioration during the Younger Dryas in North America. Mutual Climatic Range data suggest several 'events' in the coleopteran record from the Maritimes that appear similar to climate events recorded in the GRIP ice-core record, including the (Younger Dryas) cooling event from GI-1a to GS-1 beginning c. 12?650 GRIP yr BP Some of the major temperature oscillations of Greenland Interstadial 1 may also be reflected in the coleopteran record of the Maritimes. |
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