CGRG Bibliography of Canadian Geomorphology
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Author : Drzyzga, S.A.
Date : 2007.
Title : Relict shoreline features at Cockburn Island, Ontario.
Publication : Journal of Paleolimnology
Issue : 37(3):
Page(s) : 411-417.



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Abstract

Cockburn Island, Ontario (45 55 N, 83 20 W), holds at least six sets of elevated lake bluffs, scarps and bar deposits that mark distinctive water planes above the Nipissing Great Lakes water plane (198m). These relict shoreline features occur at elevations that correspond closely with the elevations of others at nearby St. Joseph Island and in eastern upper Michigan. Together, the elevations and relative locations of steep relict bluffs suggest a proto-Cockburn Island once interrupted the surface of proglacial Lake Algonquin. The islet appears to have emerged and grown through a period of uplift and a sequence of lowering water levels. The highest relict shoreline (280.2 m) is correlated with the Main phase of Lake Algonquin. Lower shorelines at Cockburn Island cannot be correlated consistently, so additional work is required

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Bibliography of Canadian Geomorphology