thumbnail

Sediment delivery to the Gulf of Alaska: source mechanisms along a glaciated transform margin

Geological Society Special Publication

By:
, , and

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time
  • Download citation as: RIS

Abstract

Sediment delivery to the Gulf of Alaska occurs via four areally extensive deep-water 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.

Additional Publication Details

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
Issue:
129
Year Published:
1998
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geological Society Special Publication
First page:
43
Last page:
66
Number of Pages:
24