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Page 5465, results 136601 - 136625

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Geochemical Exploration Techniques Applicable in the Search for Copper Deposits
Maurice A. Chaffee
1975, Professional Paper 907-B
Geochemical exploration is an important part of copper-resource evaluation. A large number of geochemical exploration techniques, both proved and untried, are available to the geochemist to use in the search for new copper deposits. Analyses of whole-rock samples have been used in both regional and local geochemical exploration surveys in the...
Summary appraisals of the nation's ground-water resources – Rio Grande region
S. W. West, W. L. Broadhurst
1975, Professional Paper 813-D
The Rio Grande is an interstate and international stream which begins in high mountains of Colorado, flows across New Mexico, and forms the boundary between Texas and Mexico. Precipitation ranges from 8 inches (20 em) to more than 30 inches (76 em), but irrigation is required for growing crops throughout...
Land subsidence and tectonism, Raft River Valley, Idaho
Ben Elder Lofgren
1975, Open-File Report 75-585
A comparison of 1974 leveling data with elevations established 40 years earlier reveals two types of vertical ground movement which have occurred in Raft River Valley, Idaho: (1) regional differential movement of about 0.22 ft (6.4 cm), apparently due to tectonism, and (2) extensive land subsidence of as much as...
Depositional environments and paleocurrent directions in the Precambrian Moeda Formation, Minas Gerais, Brazil
David A. Lindsey
1975, Open-File Report 75-264
The middle Precambrian Moeda Formation of Minas Gerais, Brazil, contains uranium and other minerals believed to be of detrital origin. Two areas of anomalously high concentrations of uranium have been discovered in conglomeratic zones that are interpreted as paleochannels. Because the distribution of uranium is believed to be controlled at...
Hydrology and sedimentation of Bixler Run basin, central Pennsylvania
Lloyd A. Reed
1975, Open-File Report 75-26
Rainfall, streamflow, stream chemical, and sediment discharge data were collected from Bixler Run near Loysville, Pa., during the period February 1954 to September 1969, as part of a project to evaluate sediment discharge from an agricultural area that had been adopting soil-conservation techniques at a moderate rate. The study was...
Origin and significance of natural gases of Montana
Dudley D. Rice
1975, Open-File Report 75-188
About two years ago, I was assigned to a project to evaluate the hydrocarbon potential of the Cretaceous system of the northern Rocky Mountains; namely, in Montana, North Dakota, and South Dakota. I had no problem identifying potential traps; both structural and stratigraphic, but recognized the fact that most of...