Where do the Mount Logan Ice Cores come from?
Figure: Location map or figure showing location of ice-coring sites on and around Mount Logan. Since 1980, several hundred meters of ice cores have been recovered from the Mount Logan region: The first ice cored drilled on Mount Logan was recovered in 1980 from the Northwest Col by an expedition led by Dr. Gerry Holdsworth, now a fellow of the Arctic Institute of North America, Calgary. The ice was recovered to a depth of 103 m, but the drill did not reach bedrock. That core represents a time interval of ~280 years (back to ~1700 AD). In 1996, a team from the University of New Hampshire (USA) recovered a 160-m core from the Eclipse Icefield (3100 m elevation, 40 km from Mount Logan). This was a test for an ice drill designed by glaciologist Erik Blake, based in Whitehorse. The 1996 core represents ice of the last 100 years (back to ~AD 1894). Several more cores were later at this site in 2002 by an American university team using Erik Blake’s drill. The deepest of these cores was 345-m
