CGRG Bibliography of Canadian Geomorphology
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Author : Cooke, K.A.; Dallimore, A.; Hay, M.B.; and Enkin, R.J.
Date : 2011.
Title : Late Holocene paleoenvironmental history of an anoxic basin on the central coast of British Columbia: Frederick Sound.
Publication : American Geophysical Union (AGU) Fall Meeting 2011. December 5-9, 2011. San Francisco, California. USA.
Issue : PP41C-1779.
Page(s) :
Abstract
A 5,800 year Holocene laminated sediment record from the highly restricted Seymour-Belize marine fjord complex on the central mainland coast of British Columbia extends northward the regional analysis of high-resolution laminated sediment studies previously focused in the more southern Effingham and Saanich inlets of Vancouver Island, B.C., Canada. In contrast to these more marine-influenced inlets, Northeast Pacific climate variability is manifested in the marine sediment lithofacies of Frederick Sound by proxies for precipitation, productivity and streamflow variability rather than external oceanographic conditions. A depositional model constructed from high-resolution radiocarbon dating and sediment physical property measurements indicates that lower sedimentation rates dominate under environmentally quiescent conditions, when deposition is dominated by runoff and in situ productivity. These periods of quiescence are episodically punctuated by numerous mass movement deposits of varying physical properties, indicative of the more frequent and diverse activity of highly energetic depositional processes than those predominating in the anoxic fjord basins of southern British Columbia.
Bibliography of Canadian Geomorphology