The Astoria Fan: An elongate type fan

Geo-Marine Letters



The Astoria Fan, a modern system, is located on a subducting oceanic crust and fills a north-south-trending trench along the Oregon continental margin. Well-developed channels cross the entire fan length; they display classic inner-fan leveed profiles but evolve into distributaries in the midfan area where the gradient decreases sharply. During periods of low sea level, inner- and middle-fan channels funnel sand to distal depositional sites in the outer-fan area where the sand/shale ratios are highest. This pattern of sand displacement and efficiency of transport appears to be characteristic of elongate fans fed by a major river and submarine canyon. ?? 1984 Springer-Verlag New York Inc.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title The Astoria Fan: An elongate type fan
Series title Geo-Marine Letters
DOI 10.1007/BF02462449
Volume 3
Issue 2-4
Year Published 1984
Language English
Publisher Springer-Verlag
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Geo-Marine Letters
First page 65
Last page 70
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