USGS · 70182589
Link between ridge subduction and gold mineralization in southern Alaska
Abstract
40 Ar/ 39 Ar 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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Peter J. Haeussler, Dwight Bradley, Richard Goldfarb, Lawrence W. Snee, Cliff D. Taylor. 1995. Link between ridge subduction and gold mineralization in southern Alaska. https://doi.org/10.1130/0091-7613(1995)023%3C0995%3Albrsag%3E2.3.co%3B2
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