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Page 5109, results 127701 - 127725

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Not all publications have extents, not all extents are completely accurate
Directory of local assistance centers of the National Water Data Exchange (NAWDEX)
Melvin D. Edwards
1979, Open-File Report 79-423
The National Water Data Exchange (NAWDEX), managed by the U.S. Geological Survey, has established a network of Local Assistance Centers throughout the United States and Puerto Rico to assist users of water data in identifying and locating the data they need. This Directory provides the information needed to contact any...
Southeast Georgia embayment high-resolution seismic-reflection survey
Douglas W. Edsall
1979, Open-File Report 78-800
A high-resolution seismic survey of the offshore part of the Southeast Georgia Embayment on about a 20 km spacing was completed in 1976. A stratigraphic analyses of the data shows that the largest controlling factor in the depositional history of the shelf has been the Gulf Stream. These currents have...
Surface subsidence and collapse in relation to extraction of salt and other soluble evaporites
John R. Ege
1979, Open-File Report 79-1666
Extraction of soluble minerals, whether by natural or man-induced processes, can result in localized land-surface subsidence and more rarely sinkhole formation. One process cited by many investigators is that uncontrolled dissolving of salt or other soluble evaporites can create or enlarge underground cavities, thereby increasing the span of the unsupported...
Grain-size analyses of Ordovician sandstones from the Midwestern states
Keith Brindley Ketner
1979, Open-File Report 79-230
Certain Ordovician sandstones of the Midwestern States were investigated for the purpose of determining the range in size of constituent sand grains. Although many size analyses of the same formations have been reported in the literature, the methods of sample collection, preparation, and sieving were not uniform, and the results...
A single-degree-of-freedom model for non-linear soil amplification
Mustafa Ozder Erdik
1979, Open-File Report 79-592
For proper understanding of soil behavior during earthquakes and assessment of a realistic surface motion, studies of the large-strain dynamic response of non-linear hysteretic soil systems are indispensable. Most of the presently available studies are based on the assumption that the response of a soil deposit is mainly due to...
Geology, petrology, and chemistry of the Leadville Dolomite: host for uranium at the Pitch Mine, Saguache County, Colorado
J. Thomas Nash
1979, Open-File Report 79-1566
Newly documented uranium ore in the Pitch Mine occurs chiefly in brecciated Mississippian Leadville Dolomite along the Chester reverse fault zone, and to a lesser extent in sandstone, siltstone, and carbonaceous shale of the Pennsylvanian Belden Formation and in Precambrian granitic rocks and schist. Uranium-mineralized zones are generally thicker, more...
Accessory opaque oxides from hybrid granitoid rocks of the southern Snake Range, Nevada
Donald E. Lee, Richard E. Van Loenen
1979, Open-File Report 79-1608
Analytical data are presented for 12 magnetite and 6 ilmenite samples recovered from hybrid granitoid rocks of the southern Snake Range, Nevada. The magnetites are unusual for their very low contents of TiO2 and for their similarity of composition over a range of petrologic types. The ilmenites are somewhat unusual...
Radium and uranium concentrations and associated hydrogeochemistry in ground water in southwestern Pueblo County, Colorado
J. Karen Felmlee, Robert Allen Cadigan
1979, Open-File Report 79-974
Radium and uranium concentrations in water from 37 wells tapping the aquifer system of the Dakota Sandstone and Purgatoire Formation in southwestern Pueblo County, Colorado, have a wide range of values and define several areas of high radioactivity in the ground water. Radium ranges from 0.3 to 420 picocuries per...
Preliminary report on Tertiary volcanism and uranium mineralization in the Thomas Range and northern Drum Mountains, Juab County, Utah
David Allen Lindsey
1979, Open-File Report 79-1076
The Thomas Range and northern Drum Mountains have a history of volcanism, faulting, and mineralization that began about 42 m.y. ago. Volcanic activity and mineralization in the area can be divided into three stages according to the time-related occurrence of rock types, trace element associations, and chemical nature of mineralization....
Water-quality data from a landfill, Pinellas County, Florida, May 1975-October 1977
Mario Fernandez
1979, Open-File Report 78-822
Ground water in and near a proposed landfill site can become contaminated by leachates from the fill material. Realizing that potential, Pinellas County entered into a cooperative investigation with the U.S. Geological Survey to determine background water-quality conditions, and to evaluate the potential effects of landfill leachate on the quality...
Progress in remote sensing as it applies to missions of Committee for Coordination of Joint Prospecting for Mineral Resources in Asian Offshore Areas
William A. Fischer
1979, Open-File Report 79-598
The major thrusts of investigations of the use of space data for understanding our Earth continue to focus on the land and near-shore environments. This is expectable; people live on the land, draw most of their resources from the land or near-shore areas, and in these areas environmental degradation or...
Elevations and discharges produced by a simulated flood wave on the lower Sabine River, Louisiana and Texas, caused by a theoretical dam failure
Braxtel L. Neely, Gloria J. Stiltner
1979, Open-File Report 79-678
The Toledo Bend Reservoir is located on the lower Sabine River between Louisiana and Texas. The objective of this study was to calculate the flood wave that would result from the theoretical failure of 25 percent of Toledo Bend Dam and route the wave downstream to Orange, Tex. Computations assumed...