Resource report for the deep-water areas of proposed OCS lease sale No. 70, St. George Basin, Alaska

Alan K. Cooper; D.W. Scholl; T.L. Vallier; E. W. Scott

doi:10.3133/ofr80246

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Resource report for the deep-water areas of proposed OCS lease sale No. 70, St. George Basin, Alaska

Alan K. Cooper·D.W. Scholl·T.L. Vallier·E. W. Scott

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Abstract

This report summarizes geological and geophysical data from the deep-water (greater than 200m) region of the St. George Basin lease sale area #70. The shallow-water region is discussed in detail by Marlow and others (1979a) in a companion report. The triangular deep-water region lies at the junction of the Bering shelf and the Aleutian Ridge (Fig. 2). This region is bounded on the northeast by the 200 m bathymetric contour that defines the edge of the Bering shelf, on the southeast by a meandering line that lies 3 miles north of the Aleutian Islands, and on the west by the 171°W longitude meridian. Hereafter, this triangular region is referred to as the Umnak Plateau region. The name is derived from a major bathymetric feature, Umnak Plateau, that covers most of the region.

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Source-reported bounding extent: 54.19021520593148° to 58.21631167867278° latitude; -170.95501663888365° to -164.92681972047168° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Alan K. Cooper, D.W. Scholl, T.L. Vallier, E. W. Scott. 1979. Resource report for the deep-water areas of proposed OCS lease sale No. 70, St. George Basin, Alaska. https://doi.org/10.3133/ofr80246

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