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184617 results.

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Page 7231, results 180751 - 180775

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Ground-water supplies and irrigation in San Pedro Valley, Arizona
Kirk Bryan, G. E. P. Smith, Gerald A. Waring
1934, Open-File Report 67-31
The San Pedro Valley in southeastern Arizona extends from the International Boundary northward about 120 miles to the junction of the San Pedro River with the Gila River.  The river basin also extends about 75 miles into Mexico.  The valley varies in width from 5 to 20 miles, being widest...
Gold-quartz veins south of Libby, Montana
Russell Gibson
1934, Circular 7
The area described in this paper is one of rugged mountains, composed chiefly of folded and faulted sedimentary rocks of the Belt series. In the nearby region the beds are intruded by diorite sills and granitic stocks. Glacial drift, including silt deposited in a lake, covers much of the lower...
Preliminary geological report on the Salt Plains reservoir site, Oklahoma
C.V. Theis
1934, Open-File Report 34-2
Following a request from the U.S. Bureau of Biological Survey, the writer was assigned by the Director of the U.S. Geological Survey to make a preliminary geological investigation of the Salt Plains area in Oklahoma. He spent the period from January 13 to January 22, 1934, in the field making...