CGRG Bibliography of Canadian Geomorphology
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Author : Awadallah, S.A.M.
Date : 1992
Title : Late Quaternary marine, deltaic and fluvial deposits, Kanairiktok Valley, Coastal Central Labrador
Publication : Unpublished M.Sc. thesis. Memorial University of Newfoundland
Issue :
Page(s) : 253 p.
Abstract
The Kanairiktok River Valley, central coastal Labrador, extends more than 100 km inland at about 54.45N latitude. Three of the five sedimentary units in the bluffs of the modern river were deposited in a marine embayment that occupied the isostatically depressed area during the Late Quaternary. The oldest units (units A and B) were deposited from surface sediment plumes originating from several points of fresh water input into the marine fjord, and from a variety of density currents. Unit B contains rare shells that have been dated at 7950 +/- 95 yr B.P. (Beta-28885). Proximal deltaic sediments were deposited from fjord-head and side-entry deltas as the middle and eastern parts of the study area were emerging (upper part of Unit B and parts of Unit C). The marine and deltaic sediments are overlain by either local aeolian sands of Unit C or fluvial deposits of Unit D. A glacial re-advance may have occurred after the western part of the area became emergent, depositing ice-contact glaciofluvial sediments of units C and D and possibly till (Unit E) over marine muds. Alternatively, some Unit E deposits may have been deposited by debris flows of glaciogenic sediments. The main contributions of the thesis are: (1) description and interpretation of the post-glacial sedimentary record of the Kanairiktok Valley area, (2) a local chronology of deglaciation and sea level, (3) the first sedimentological, micropalaeontological and process link between marine studies (Labrador Shelf and modern bays) and the land record of Quaternary events in coastal Labrador
Bibliography of Canadian Geomorphology