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Page 4711, results 117751 - 117775

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Maps showing geology and shallow structure of western Rhode Island Sound, Rhode Island
Sally W. Needell, Charles J. O’Hara, Harley J. Knebel
1983, Miscellaneous Field Studies Map 1537
This report presents the results of a high-resolution, seismic-reflection, and sidescan-sonar survey conducted in western Rhode Island Sound south of Narragansett Bay (fig. 1 inset) by the U.S. Geological Survey in 1980. The study defines the geologic framework of the Atlantic Inner Continental Shelf between lat. 41°09' and 41°32'N and...
Comparative physiographic diagrams of Mount St. Helens, Washington, and Crater Lake, Oregon
Tau Rho Alpha, Jim M. Morley
1983, Miscellaneous Field Studies Map 1403
These physiographic diagrams provide a visual comparison of two Cascade Range volcanoes which have had their tops destroyed in different ways -- Mount St. Helens in 1980, Mount Mazama (whose site is now occupied by Crater Lake) about 6,800 years ago. Both volcanoes are viewed from the north from 30...
Mineral resource potential map of the Mount Eddy and Castle Crags Roadless Areas, Shasta, Siskiyou, and Trinity counties, California
Jocelyn A. Peterson, Mary E. Caress, David K. Denton, James M. Spear
1983, Miscellaneous Field Studies Map 1529-B
Although ultramafic terranes such as that underlying the Mount Eddy and Castle Crags Roadless Areas may contain chromite, nickel, platinum-group metals, cobalt, and asbestos, there are no significant identified concentrations of these resources within the roadless areas. Platinum-group metals were sought but not detected in stream-sediment concentrates, although this does...
Map showing characteristics of lode gold in the Medford 1 degree by 2 degrees Quadrangle, Oregon-California
Norman J. Page, Maureen G. Johnson, Jocelyn A. Peterson
1983, Miscellaneous Field Studies Map 1383-D
About 500 lode gold occurrences, prospects, and mines have been reported from the Medford 1o x 2o quadrangle, Oregon-California. Summary descriptions of individual lode gold deposits and districts which include those occurrences in the Medford 1o x 2o quadrangle have been published by Brooks and Ramp (1968) and Hotz (1971) and by others cited in...