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Page 7138, results 178426 - 178450

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Publication Extents

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Aeromagnetic maps and second vertical derivative maps of Great Sitkin Island, Northern Adak Island, and part of northeastern Umnak Island, Alaska
Isidore Zietz, Roland G. Henderson
1949, Open-File Report 49-9
The eight attached maps were constructed from data taken on Project Volcano in the summer of 1947. The project was sponsored by the Office of Naval Research and conducted by the U.S. Geological Survey in cooperation with the Naval Ordnance Laboratory. Field work was done by Fred Keller, Jr., and...
Interpreting ground conditions from geologic maps
Water Resources Division, U.S. Geological Survey
1949, Circular 46
Intelligent planning for heavy construction, water supply, or other land utilization requires advance knowledge of ground conditions in the area. It is essential to know:the topography, that is, the configuration of the land surface;the geology and soils, that is, the deposits that compose the land and its weathered surface; andthe...
Staff report on phosphates
Vincent Ellis McKelvey, James Bachelder Cathcart
1949, Trace Elements Investigations 94-2
No abstract available....