Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

183931 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 7103, results 177551 - 177575

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Distribution of coastal black-sands in North Carolina, South Carolina, and Georgia, as mapped from an airplane
V.E. McKelvey, James R. Balsley
1948, Economic Geology (43) 518-524
Black-sand beach concentrates are more widely distributed along the beaches of North Carolina, South Carolina, and Georgia than has been recorded heretofore, as shown by a map prepared by airplane reconnaissance. The map shows also that the black sands diminish in abundance northward, that their distribution is in part related...
The bedding-replacement fluorspar deposits of Spar Valley, Eagle Mountains, Hudspeth County, Texas
Elliot Gillerman
1948, Economic Geology (43) 509-517
The Spar Valley fluorspar district in the Eagle Mountains, Hudspeth County, Texas, is one of the few in the western United States containing bedding-replacement fluorspar deposits. The deposits at Spar Valley resemble the bedding-replacement deposits of the Cave in Rock fluorspar district of southern Illinois. Two distinct deposits, the North...
A sensitive field test for heavy metals in water
Lyman C. Huff
1948, Economic Geology (43) 675-684
A semiquantitative colorimetric analytical method using dithizone to detect traces of heavy metals in natural water is described. Although reagents of exceptional purity are required, only simple equipment is needed and the test can be made in a few minutes in the field. A combined mixed color and mono color...
Geology and ground water of the Casablanca Basin, Chile
G. C. Taylor Jr.
1948, Economic Geology (73) 661-674
"In the uplands the Cretaceous granodiorite and granite contain water in the weathered zones, and in joints and fractures. These yield small supplies of good water to springs and to shallow domestic and stock wells. The alluvial fill of the lowlands contains a zone of saturation that is sustained by...
Ground water hydraulics as a geophysical aid
John G. Ferris
1948, Technical Report 1
The publication of the non-equilibrium formula in 1935 in a paper by Theis marked the opening of a new era in the analysis and understanding of the hydraulics of percolating ground waters. Through the past decade 9 an ever-increasing number of engineers and geologists have become familiar-with the application of...
Experimental drilling in Chattanooga shale
Andrew Brown
1948, Trace Elements Memorandum 63
Information on which specifications were originally drawn for drilling the Chattanooga shale was obtained largely from the TVA, whose geologists and driller laid great stress on the difficulties of maintaining circulation in their ho;es. The stated that the shale itself was not particularly difficult to core, the trouble being...
Monazite in concentrations from Idaho placer operations
1948, Trace Elements Memorandum 56
During the summer of 1947 the Atomic Energy Commission informally requested the Geological Survey collect sampled of concentrates from Idaho placer operations that might be useful for experimental study of monazite recovery. Some fourteen active gold-dredging operations were examined and sampled by Fred M. Chase during August and September 1947....