Postglacial Uplift at Tanquary Fiord, Northern Ellesmere Island, Northwest Territories

Constructs a postglacial uplift curve for the upper part of Tanquary Fiord from radiocarbon ages of marine shells and peat. Data show the head of the fiord to be clear of glacier ice by at least 6500 yr BP. During 6500-5000 yr BP isostatic uplift was at a rate of about 3.5 m/century and subsequently...

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Bibliographic Details
Published in:ARCTIC
Main Authors: Hattersley-Smith, G., Long, Austin
Format: Article in Journal/Newspaper
Language:English
Published: The Arctic Institute of North America 1967
Subjects:
Online Access:https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66350
Description
Summary:Constructs a postglacial uplift curve for the upper part of Tanquary Fiord from radiocarbon ages of marine shells and peat. Data show the head of the fiord to be clear of glacier ice by at least 6500 yr BP. During 6500-5000 yr BP isostatic uplift was at a rate of about 3.5 m/century and subsequently about 25 cm/cent. On a construit, à partir d'échantillons de coquillages marins et de tourbe datés au radiocarbone, une courbe du relèvement postglaciaire pour la partie supérieure du fiord de Tanquary, dans le nord de l'île d'Ellesmere. Les données montrent que la partie amont du fiord était libre de glace il y a moins de 6,500 ans. Entre 6,500 et 5,000 av.p., le relèvement isostatique s'est produit au rythme d'environ 3,5 m par siècle: par la suite, le rythme a été d'environ 25 cm/siècle.