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PORTAIL D'INFORMATION GÉOGRAPHIQUE

A 10,000 yr BP extensive ice shelf over Viscount Melville Sound, Arctic Canada

Auteurs :
HODGSON, D. A.
VINCENT, J. C.

Description :
Late Wisconsinan age glacial Landforms and deposits indicate that an ice shelf of at least 60,000 km flowed northwestward into Viscount Melville Sound, probably from the M'Clintock Dome of the Laurentide Ice Sheet. The ice shelf overlapped coastal areas and laid Winter Harbour Till up to 150 m above present sea level on the north coast of Victoria Island. The contemporary sea-level was 50 to 100 m higher than present. A maximum age of 10,340150 yr BP for the till, and thus for the ice shelf advance, is provided by shells in marine sediments which underlie it, whereas a minimum age of 9880150 yr BP is provided by overlying shells that postdate the ice advance.


Type de document :
Article de périodique

Source :
Quaternary research New York, 1984, vol. 22, n°. 1, p. 18-30, Références bibliographiques : 35 réf.

Date :
1984

Langue :
Anglais
Droits :
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