Pollen Diagrams in the Mackenzie Delta Area, N.W.T.

• Published in: ARCTIC
• Main Authors: Mackay, J.R., Terasmae, J.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: The Arctic Institute of North America 1963
• Subjects: Mackenzie Delta; Arctic
• Online Access: http://dx.doi.org/10.14430/arctic3543; http://arctic.journalhosting.ucalgary.ca/arctic/index.php/arctic/article/viewFile/3543/3518

Considers postglacial climatic changes in northern Mackenzie District, from palynological and other evidence. Peat from exposures in two areas, also alluvial sediments from a drill hole were analyzed; pollen diagrams with radiocarbon control are presented for the peat. From these investigations and geomorphic interpretation of the exposures, fossil evidence, etc., a tentative climatic sequence is proposed; deglaciation about 12,000 yrs ago, a cool-dry climate 8500-7500 B.P., a warmer and drier period, and increased moisture and cooling climate in late postglacial time. The last changes are indicated by increases in alder and Ericaceae and formation of pingos.