CGRG Bibliography of Canadian Geomorphology
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Author : Corney, R. E.
Date : 1993
Title : A depositional model for chromite-bearing Pleistocene sediments of Port Au Port Bay, Western Newfoundland
Publication : Unpublished M.Sc. thesis. University of Toronto, Toronto
Issue :
Page(s) :
Abstract
Late Pleistocene raised marine foreland borders Port au Port Bay on the west coast of Newfoundland, Canada. Large volumes of chromite-rich glacial debris, from the nearby Lewis Hills Ophiolite Complex, were deposited along the coastal margin during the retreat of Late Wisconsin ice margins at about 13 ka B.P. Rapid deposition during late-glacial ice retreat combined with a high relative sea-level, resulted in the formation of a coarse-grained fan-delta. Postglacial isostatic rebound of the coast and relative sea-level fall allowed the oncentration of chromite into regressive marine beach ridges. Holocene shoreface erosion of the Late Pleistocene deposits, in response to postglacial eustatic sea-level rise, has produced a thin, chromite-rich transgressive sand sheet in the nearshore zone. A facies model related the Late Pleistocene depositional history of the Port au Port Bay area to chromite occurrence in lateglacial and postglacial sediments.
Bibliography of Canadian Geomorphology