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

Canadian Journal of Earth Sciences

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Abstract

Side-scan sonar images provide a view of an actively changing delta front in this marine outwash fjord. 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. -Authors

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
Volume
29
Issue:
3
Year Published:
1992
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
565
Last page:
573
Number of Pages:
9