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GEOREF RECORD

Tectonic and geologic implications of the Zodiac Fan, Aleutian abyssal plain, Northeast Pacific

Andrew J. Stevenson, David W. Scholl and Tracy L. Vallier
Tectonic and geologic implications of the Zodiac Fan, Aleutian abyssal plain, Northeast Pacific
Geological Society of America Bulletin (February 1983) 94 (2): 259-273

Abstract

Upper Eocene through lower Oligocene turbidites. Well-developed channel distributary system; four major channels have been identified with the following relative age relation (> = older than): Sagittarius > Aquarius > Taurus, and Sagittarius > Seamap. A minimum drainage of 500,000 km (super 2) is believed necessary to have supplied the sediment to form the fan. Tertiary plate-motion models requiring large amounts of relative covergence along the Aleutian Trench are judged unworkable. As the minimum drainage is already equal to one-half of the State of Alaska, any major expansion is judged unreasonable. Relative convergence at the Aleutian Trench limited to less than approximately 500 km from 40 m.y. B.P. to present; possibly a significant portion of southern Alaska moved in concert with the Pacific Plate since the upper Eocene.--Modified journal abstract.


ISSN: 0016-7606
EISSN: 1943-2674
Coden: BUGMAF
Serial Title: Geological Society of America Bulletin
Serial Volume: 94
Serial Issue: 2
Title: Tectonic and geologic implications of the Zodiac Fan, Aleutian abyssal plain, Northeast Pacific
Affiliation: U. S. Geol. Surv., Menlo Park, CA, United States
Pages: 259-273
Published: 198302
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 72
Accession Number: 1983-025629
Categories: Oceanography
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sketch maps
N52°34'17" - N52°34'19", E161°12'19" - E161°12'20"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute.
Update Code: 1983
Program Name: DSDPDeep Sea Drilling Project
Program Name: USGSOPNon-USGS publications with USGS authors
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