. Commercial fisheries review. Fisheries; Fish trade. 12 and "; The Surveyor was scheduled to be in the area from June until September; the Oceanographer from about mid-July until late August. The ships will map the offshore area using precise electronic navigational control. Sediment samples of the Bering Sea bottom and profiles of the geologic formations beneath the sediment will be obtained on the ships by a team of five U. S. Geological Sur- vey (USGS) scientists. The samples will be analyzed for mine ral content at the USGS laboratories, Menlo Park, Calif. Data gat
. Commercial fisheries review. Fisheries; Fish trade. 12 and "; The Surveyor was scheduled to be in the area from June until September; the Oceanographer from about mid-July until late August. The ships will map the offshore area using precise electronic navigational control. Sediment samples of the Bering Sea bottom and profiles of the geologic formations beneath the sediment will be obtained on the ships by a team of five U. S. Geological Sur- vey (USGS) scientists. The samples will be analyzed for mine ral content at the USGS laboratories, Menlo Park, Calif. Data gathered will be analyzed by scien- tists of both agencies. The survey will pro- vide data for bathymetric maps showing the shape of the ocean floor, for nautical charts, and for magnetic anomaly and gravity anomaly maps. These Coast and Geodetic Survey maps will provide a base for plotting the sediment analyses and profiles of the geological struc- ture. This will permit the Geological Survey geologists to evaluate mineral and oil poten- tial under Norton Sound. Geologic Information The survey also will provide geologists with information on the area's geological history. It may prove possible to map the outline of shorelines, river valleys, and glacial deposits that once existed above sea level. The scientists will search for submerged beach ridges and stream valleys to determine the area's drainage pattern when it was emergent. The sea valleys are particularly interesting because they drained the area of the gold placer deposits near Nome. The Bering Sea survey is a pilot project conforming with recommendations of the Na- tional Council on Marine Eesources and Engineering Development. The long-range view is to extend the program to the conti- nental shelves off the Pacific, Gulf, and At- lantic coasts. The Alaskan shelf is about two-thirds of the entire submerged area. ESSA currently is surveying the entire shelf. Bathymetric maps of its topography already have been issued for
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