Sediment delivery to the Gulf of Alaska: Source mechanisms along a glaciated transform margin
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Abstract
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.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Sediment delivery to the Gulf of Alaska: Source mechanisms along a glaciated transform margin |
| Series title | Geological Society Special Publication |
| DOI | 10.1144/GSL.SP.1998.129.01.04 |
| Volume | 129 |
| Year Published | 1998 |
| Language | English |
| Publisher | Geological Society, London |
| Description | 24 p. |
| First page | 43 |
| Last page | 66 |
| Google Analytic Metrics | Metrics page |