Link between ridge subduction and gold mineralization in southern Alaska

Peter J. Haeussler; Dwight Bradley; Richard Goldfarb; Lawrence Snee; Cliff Taylor

doi:10.1130/0091-7613(1995)023<0995:LBRSAG>2.3.CO;2

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Research Article| November 01, 1995

Link between ridge subduction and gold mineralization in southern Alaska

Peter J. Haeussler;

Peter J. Haeussler

1

U.S. Geological Survey, 4200 University Drive, Anchorage, Alaska 99508

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Dwight Bradley;

Dwight Bradley

1

U.S. Geological Survey, 4200 University Drive, Anchorage, Alaska 99508

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Richard Goldfarb;

Richard Goldfarb

2

U.S. Geological Survey, Box 25046, MS 973, Denver Federal Center, Denver, Colorado, 80225

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Lawrence Snee;

Lawrence Snee

2

U.S. Geological Survey, Box 25046, MS 973, Denver Federal Center, Denver, Colorado, 80225

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Cliff Taylor

2

U.S. Geological Survey, Box 25046, MS 973, Denver Federal Center, Denver, Colorado, 80225

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Author and Article Information

Peter J. Haeussler

1

U.S. Geological Survey, 4200 University Drive, Anchorage, Alaska 99508

Dwight Bradley

1

U.S. Geological Survey, 4200 University Drive, Anchorage, Alaska 99508

Richard Goldfarb

2

U.S. Geological Survey, Box 25046, MS 973, Denver Federal Center, Denver, Colorado, 80225

Lawrence Snee

2

U.S. Geological Survey, Box 25046, MS 973, Denver Federal Center, Denver, Colorado, 80225

Cliff Taylor

2

U.S. Geological Survey, Box 25046, MS 973, Denver Federal Center, Denver, Colorado, 80225

Publisher: Geological Society of America

First Online: 02 Jun 2017

Online ISSN: 1943-2682

Print ISSN: 0091-7613

Geological Society of America

Geology (1995) 23 (11): 995–998.

https://doi.org/10.1130/0091-7613(1995)023<0995:LBRSAG>2.3.CO;2

Abstract

⁴⁰Ar/³⁹Ar geochronology reveals that turbidite-hosted gold deposits in the southern Alaska accretionary prism are the same age as nearby near-trench plutons. These early Tertiary plutons and gold lodes formed above a slab window during subduction of an oceanic spreading center. Ridge subduction is a previously unrecognized tectonic process for the generation of lode gold.

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