CGRG Bibliography of Canadian Geomorphology
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Author : Bornhold, B.D.
Date : 1983
Title : Sedimentation in Douglas Channel and Kitimat Arm
Publication : Proceedings of a Workshop on the Kitimat Marine Environment. Edited by: R.W. Macdonald. Canadian Technical Report of hydrography and Ocean Sciences
Issue : 18:
Page(s) : 88-114
Abstract
Douglas Channel and Kitimat Arm consist of three major depositional basins. Two of these are 400 m deep and contain unconsolidated sediments more than 600 m thick. They are separated by a prominent sill at a depth of 211 m which is composed of more than 900 m of predominantly morainal material. The third basin, which is completely filled, underlies northern Kitimat Arm and southern Kitimat Valley and is separated from the other basins by a bedrock sill, now buried by Kitimat delta sediments. Seismic profiling, low-frequency echosounding and coring have delineated the following stratigraphic units: tills (?) and glaciomarine sediments; stratified sands and sandy muds; accoustically transparent muds; coarse, gravelly morainal sediments; thin, surficial stratified muds and sandy muds with occasional sand layers; and hummocky, slumped sediments on the Kitimat delta front. Much of the sediment in the fjord was deposited during deglaciation between approximately 13,100 and 11,000 yr B.P. with the main morainal sill being produced by stagnation of the ice at about 12,000 yr B.P.
Bibliography of Canadian Geomorphology