CGRG Bibliography of Canadian Geomorphology
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Author : Dilabio, R.N.W. and Shilts, W.W.
Date : 1979.
Title : Composition and dispersal of debris by modern glaciers, Bylot Island
Publication : Moraines and Varves: Origin/genesis/classification. Edited by: C. Schlucher. Rotterdam: A.A. Balkema
Issue :
Page(s) : 145-155
Abstract
Bylot Island lies opposite the settlement of Pond Inlet, off the northeastern tip of Baffin Island, about 400 km southwest of Thule, Greenland and 430 km east of Resolute Bay (Fig. 1). The central, northwest-trending spine of the 180 km long by 100 km wide island is mountainous, with peaks averaging 1400 m a.s.l. up to a maximum altitude of about 2000 m a.s.l. in the Byam Martin Mountains. The highlands (Fig. 2) are aptly described by Jackson and Davidson (1975:1) as - "...mostly ice-covered, and the bedrock, much of which is deeply weathered, is exposed in a myriad of jagged nunataks, aretes, cols, tors, and cirques which appear like islands in a white sea. Innumerable glaciers flow outward from the backbone of the Byam Martin Mountains;...". In 1977, the authors chose several glaciers on the southwest side of Bylot Island as sites to study the composition of debris in lateral moraines and debris entrained in ice. Bylot Island was selected for these studies specifically because of its bedrock geology - highly metamorphosed, crystalline, Precambrian-age terrane in the rugged, high-altitude accumulation areas is surrounded by a gently rolling apron of unmetamorphosed late Proterozoic sediments and poorly consolidated, coal-bearing, Cretaceous-Tertiary sediments in the dispersal area (Jackson and Davidson, 1975). Glaciers chosen for sampling cross at least two of these lithologically distinct bedrock terranes.
Bibliography of Canadian Geomorphology