Sediment delivery to the Gulf of Alaska: Source mechanisms along a glaciated transform margin
Sediment delivery to the Gulf of Alaska occurs via four areally extensive deepwater fans, sourced from grounded tidewater glaciers. During periods of climatic cooling, glaciers cross a narrow shelf and discharge sediment down the continental slope. Because the coastal terrain is dominated by fjords and a narrow, high-relief Pacific watershed, deposition is dominated by channellized point-source fan accumulations, the volumes of which are primarily a function of climate. The sediment distribution is modified by a long-term tectonic translation of the Pacific plate to the north along the transform margin. As a result, the deep-water fans are gradually moved away from the climatically controlled point sources. Sets of abandoned channels record the effect of translation during the Plio-Pleistocene.
Citation Information
Publication Year | 1998 |
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Title | Sediment delivery to the Gulf of Alaska: Source mechanisms along a glaciated transform margin |
DOI | 10.1144/GSL.SP.1998.129.01.04 |
Authors | M.R. Dobson, D. O'Leary, M. Veart |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Geological Society Special Publication |
Index ID | 70019866 |
Record Source | USGS Publications Warehouse |