Mots-clés
Arctique ; Canada ; Détroit de Melville ; Géographie des régions polaires ; Ice shelf ; Littoral ; Moraine d'ice shelf ; Niveau marin ; Northwest Territories ; Océan Arctique ; PICG 200 ; Paléorivage ; Plate-forme de glace ; Quaternaire marin ; Quaternaire supérieur ; Quaternaire zones froides ; Tardiglaciaire ; Viscount Melville Sound ; Wisconsinien supérieurGeography of polar regionsA 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
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)