Title

Petrography and U-pb, Detrital Zircon Geochronology of Metasedimentary Strata Dredged from the Chukchi Borderland, Amerasia Basin, Arctic Ocean

Abstract

In 2008-2009, twelve dredges were taken aboard the USCGC Healy from outcrops along the Alpha Ridge, Northern Chukchi Borderland, Northwind Ridge and the Chukchi Plateau in the Arctic Ocean as part of the U.S. Extended Continental Shelf Project. To ensure sampling of outcrop, steep bathymetric slopes (>40°) with little mud cover were identified with multibeam sonar and targeted for dredging. The first dredge from Alpha Ridge yielded volcaniclastic sedimentary rocks deposited from a phreatomagmatic eruption in shallow water (

Publication Date

12-2010

Journal or Conference Title

Fall Meeting, American Geophysical Union (AGU)

Conference Date

Dec 13 - Dec 17, 2010

Publisher Place

San Francisco, CA, USA

Publisher

American Geophysical Union Publications

Document Type

Conference Proceeding