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Page 5870, results 146726 - 146750

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Publication Extents

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Geologic reconnaissance of possible powersites at Spur Mountain, Tyee, and Eagle lakes, southeastern Alaska
James E. Callahan, Alexander Andrew Wanek
1967, Open-File Report 67-35
Spur Mountain, Tyee, and Eagle Lakes fill glacially scoured bedrock basins in the Coast Range of southeastern Alaska. The bedrock consists of granitic intrusive rocks and high rank metamorphic rocks associated with or resulting from emplacement of the Coast Range batholith.Spur Mountain damsite is underlain by granodiorite and diorite. The...
Phosphate rock in Colombia - a preliminary report, with a section on the phosphate occurrence at Turmeque
James Bachelder Cathcart, Francisco Zambrano O., Pedro Mojica G.
1967, Open-File Report 67-43
Exploration for phosphate rock in Colombia was successfully carried out in 3 1/2 months by the U.S. Geological Survey and the Inventorio Minero of the Servicio Geologico Nacional, under the auspices of the U.S. Agency for International Development. A modern theory of exploration based on model studies of phosphorite deposits...
Ground water in the Eola-Amity Hills area, northern Willamette Valley, Oregon
Don Price
1967, Water Supply Paper 1847
The Eola-Amity Hills area ,comprises about 230 square miles on the west side of the Willamette Valley between Salem and McMinnville, Oreg. The area is largely rural, and agriculture is the principal occupation. Rocks ranging in age from Eocene to Recent underlie the area. The oldest rocks are a sequence...