Thoughts on some Ellesemere Island Glaciers Geomorphology

November 6, 2014 in post

Ellesmere Island, Nunavut. Several valley glaciers flowing into a former glacier valley, now filled with sea ice. Some of these glaciers form glacio-fluvial deltas. Note the decreasing altitude of delta sediments which is due to isostatic uplift. Exposed deltaic sediments are submitted to severe periglacial conditons and frost-cracking is common as evidenced by the presence of ice-wedge polygons (Photo D. Fortier © Geocryolab).