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Page 5483, results 137051 - 137075

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Plan of study of the hydrology of the Madison Limestone and associated rocks in Montana, Nebraska, North Dakota, South Dakota, and Wyoming
Water Resources Division, U.S. Geological Survey
1975, Open-File Report 75-631
A major part of the United States ' coal reserves is in the Fort Union coal region of the Northern Great Plains. Large-scale development of these reserves would place a heavy demand on the area 's limited water resources. Surface water is poorly distributed in time and space. Its use...
Metallogenic provinces of the southeastern Pacific region
George Edward Ericksen
1975, Open-File Report 75-263
Metalliferous mineral deposits of the southeastern Pacific region include: (1) hydrothermal, magmatic, and sedimentary deposits of the Andean region, one of the great mineral belts of the world; 2) Scattered hydrothermal mineral occurrences in the Antarctic Peninsula; and 3) metal-enriched pelagic sediments, ferromanganese nodules, and volcanic rocks(?) in the southeast...
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...
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...
Flood of April 1975 at Lansing, Michigan
John B. Miller, L.A. Swallow
1975, Open-File Report 75-300
On April 18 between 5 p.m. and 12 p.m. an intense rainstorm fell in the Lansing area resulting in extensive flooding.  The Federal Disaster Assistance Administration estimated that 175 homes were damaged to at least half their value, 4,500 received some damage, with additional losses to schools, utilities, hospitals, and...
Water availability and geology of Sumter County, Alabama
Marvin E. Davis, Thomas H. Sanford, Patrick O. Jefferson
1975, Open-File Report 75-459
Geologic units that crop out in Sumter County include the Selma Group of Late Cretaceous age; the Midway and Wilcox Groups of Tertiary Age; and terrace deposits and alluvium of Quaternary age. The Tuscaloosa Group, consisting of the Coker and Gordo Formations, and Eutaw Formation of Late Cretaceous age underlie...
Water availability and geology of Hale County, Alabama
Marvin E. Davis, Thomas H. Sanford Jr., Patrick O. Jefferson
1975, Open-File Report 75-452
Geologic units that underlie and crop out in Hale County include the Tuscaloosa Group, Eutaw Formation, and Selma Group of Late Cretaceous age, and terrace deposits and alluvium of Quaternary age. The Cretaceous units dip southwest about 35 feet per mile and strike northwest. They consist chiefly of deposits of...
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...
Predicted double-couple S-polarization angles
W.H. Dillinger
1975, Open-File Report 75-24
The main purpose of this paper is to provide a graphical procedure with which to evaluate the orientation of an earthquake source using S-polarization angles. Background material is presented on the use of S-polarization angles, including the necessary material for the use of the catalog and the manner of its...
Hydrologic evaluation of the Haystack Butte area : with emphasis on possible discharge of class-I wastes, Edwards Air Force Base, California
Jerry L. Hughes
1975, Water-Resources Investigations Report 75-7
The discharge of 3 acre-feet (4 x 10-3 cubic hectometres) per year of Class-I wastes in the Haystack Butte area of Edwards Air Force Base, Calif., has been proposed by the Air Force. Evaporation in this arid basin exceeds the 4 inches (100 millimetres) of annual precipitation. Fifteen test holes,...
Flood of April 1975 at Williamston, Michigan
R. L. Knutilla, L.A. Swallow
1975, Open-File Report 75-289
On April 18 between 5 p.m. and 12 p.m. the city of Williamston experienced an intense rain storm that caused the Red Cedar River and the many small streams in the area to overflow their banks and resulted in the most devastating flood since at least 1904. Local officials estimated...