Submarine sedimentary features on a fjord delta front, Queen Inlet, Glacier Bay, Alaska

Canadian Journal of Earth Sciences
By: , and 

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Abstract

Side-scan sonar images provide a view of an actively changing delta front in a marine outwash fjord in Glacier Bay, Alaska. Numerous interconnected gullies and chute-like small channels form paths for the transport of sand and coarse silt from the braided glacial outwash streams on the delta plain to the sinuous turbidity-current channels incised into the fjord floor. These turbidity-current channels carry coarse sediment through the fjord and into the adjoining glacial trunk valley. Several sedimentary processes affect the development of this delta front: overflow plumes deposit fine sediment; sediment gravity flows result from episodic delivery of large loads of coarse sediment; and mass movement may be triggered by earthquakes and, more regularly, by spring-tidal drawdown or hydraulic loading.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Submarine sedimentary features on a fjord delta front, Queen Inlet, Glacier Bay, Alaska
Series title Canadian Journal of Earth Sciences
DOI 10.1139/e92-049
Volume 29
Issue 3
Year Published 1992
Language English
Publisher NRC Research Press
Contributing office(s) Pacific Coastal and Marine Science Center
Description 9 p.
First page 565
Last page 573