An experiment to test hole-to-hole resistivity measurements for locating mine openings in coal seams
Jeffrey J. Daniels, James Henry Scott
1980, Open-File Report 80-895
Hole-to-hole resistivity measurements can be useful for interpreting resistivity anomalies that are located too far away from the borehole to be detected with conventional well logging probes. Hole-to-hole direct current resistivity measurements are shown in this study to be useful for detecting mine openings in a coal seam....
Field studies of borehole gamma-ray spectrometer methods for mineral exploration; a selected bibliography
Frank E. Senftle
1980, Open-File Report 80-503
A finite-difference digital model was developed to simulate the effects of a proposed well field on the water levels in existing wells in the Salt River Indian Reservation, which is in the southeastern part of Paradise Valley in central Arizona. The model area includes about 600 square miles in Paradise...
Potassium-argon geochronology of the eastern Transverse Ranges and southern Mojave Desert, southern California
F. K. Miller, D. M. Morton
1980, Professional Paper 1152
More than 200 potassium-argon apparent ages on minerals from crystalline rocks, chiefly from the San Bernardino and eastern San Gabriel Mountains and the southern Mojave Desert, define an area greater than 10,000 km2 in which the potassium-argon isotopic systematics have been highly disturbed. The disturbance or disturbances appear to have...
Hydrology and water quality of the copper-nickel study region, northeastern Minnesota
Donald I. Siegel, Donald W. Ericson
1980, Open-File Report 80-739
Data were collected on the hydrology of the Copper-Nickel study region to identify the location and nature of groundwater resources, determine the flow characteristics and general quality of the major streams, and determine the potential effects of mining copper and nickel on the hydrologic stream. Groundwater generally occurs in local...
The handling, hazards, and maintenance of heavy liquids in the geologic laboratory
Phoebe L. Hauff, Joseph Airey
1980, Circular 827
In geologic laboratories the organic heavy liquids bromoform, methylene iodide, tetrabromoethane, and clerici compounds have been used for years in mineral separation processes. Because the volume of use of these compounds is low, insufficient data is available on their toxic properties. This report is an attempt to summarize the known...
Geochemistry of water in the Fort Union Formation of the northern Powder River basin, southeastern Montana
Roger W. Lee
1980, Open-File Report 80-336
Shallow water in the coal-bearing Fort Union Formation of southeastern Montana was investigated to provide a better understanding of the geochemistry. Springs, wells less than 200 feet deep, and wells greater then 200 feet deep were observed to have different water qualities. Overall, the ground water exists as two systems:...
Water resources data for West Virginia, water year 1979. Appendix - coal areas
Water Resources Division, U.S. Geological Survey
1980, Water Data Report WV-79-A
Water resources data for the 1979 water year for coal regions of West Virginia consist of records of discharge and water quality of streams, wells, mines, and abandoned mine shafts; and water levels in wells and abandoned mine shafts. Section 1 consists of data obtained for the statewide Coal Hydrology...
Hydrology of selected basins in the Warrior coal field, Alabama — A progress report
Celso Puente, John G. Newton, Thomas J. Hill
1980, Water-Resources Investigations Report 80-22
Hydrologic data are being collected in four basins in the Warrior coal field in Alabama to provide baseline information to aid in determining the effect mining will have on water resources. Basins monitored are in two different geologic and hydrologic environments. Two basins are underlain predominantly by relatively impermeable indurated...
Supplemental data from the Ennis and other thermal-springs areas, Southwestern Montana, 1978-80
Robert B. Leonard, Wayne A. Wood
1980, Open-File Report 80-1182
Hydrogeologic data were collected principally during 1978-80 in eight hot-spring areas, in the Marysville geothermal test well, in the Butte Mine and in the Bitterroot and Missoula River valleys to provide a basis for evaluating the geothermal potential of the areas. Measurements are tabulated for subsurface temperatures, water levels, rates...
Chemical character of water in the Red River alluvial aquifer, Louisiana
M.S. Whitfield
1980, Open-File Report 80-1018
The Red River alluvial aquifer of Louisiana underlies approximately 2,000 square miles in the Red River Valley of Louisiana. The aquifer is Pleistocene in age and consists of clay, silt, sand, and gravel deposited by the Red River. Sand and gravel constitute the lower two-thirds of the deposit, the most...
Summary appraisals of the nation's ground-water resources – Caribbean region
Fernando Gómez-Gómez, James E. Heisel
1980, Professional Paper 813-U
The Caribbean Region consists of the Commonwealth of Puerto Rico (8,990 km2 (square kilometers)) and the U.S. Virgin Islands (350 km2). The mean annual precipitation varies locally from a high of 5,000 mm (millimeters) to a low of 730 mm. Maximum precipitation occurs within the peaks of Sierra de Luquillo,...
Drake Peak — A structurally complex rhyolite center in southeastern Oregon
Ray E. Wells
1980, Professional Paper 1124-E
The Drake Peak volcanic center of middle Miocene age, located about 25 km northeast of Lakeview, Oreg., is a structurally complex eruptive center that resulted from several episodes of intrusion and extrusion of rhyolite. Two thousand meters of andesite and basalt flows, lahars, and volcaniclastic rocks of late Eocene age,...
Research on interactive genetic-geological models to evaluate favourability for undiscovered uranium resources
W.I. Finch, H.C. Granger, R.D. Lupe, R.B. McCammon
1980, Conference Paper, Uranium Evaluation and Mining Techniques: Proceedings of a Symposium Held in Buenos Aires, Argentina, 1–4 October 1979
Current methods of evaluating favourability for undiscovered uranium resources are unduly subjective, quite possibly inconsistent and, as a consequence, of questionable reliability. This research is aimed at reducing the subjectivity and increasing the reliability by designing an improved method that depends largely on geological data and their statistical frequency of...
Geology and hydrology for environmental planning in Washtenaw County, Michigan
William B. Fleck
1980, Report
Washteaw County is underlain by glacial deposits that range in thickness from about 50 feet to about 450 feet. Underlying the glacial deposits are sedimentary rocks of Mississippian and Devonian age. The youngest of these rocks are the sandstones of the Marshall Formation in the western part of the county; ...
Detection and modeling of subsurface coal oxidation
Leo S. Leonhart, William O. Rasmussen
Anthony R. Barringer, editor(s)
1980, Sixth Annual Pecora Symposium and Exposition 83-83
The oxidation and sustained ignition of coal and coaly wastes within surface coal mine spoils in the southwestern U.S. have hampered the success of reclamation efforts at these locations. To assess better the magnitude, depth, geometry, and dynamics of the oxidation process thermal infrared remote sensing data have been...
Sedimentology and geochemistry of surface sediments, outer continental shelf, southern Bering Sea
J.V. Gardner, W.E. Dean, T.L. Vallier
1980, Marine Geology (35) 299-329
Present-day sediment dynamics, combined with lowerings of sea level during the Pleistocene, have created a mixture of sediments on the outer continental shelf of the southern Bering Sea that was derived from the Alaskan Mainland, the Aleutian Islands, and the Pribilof ridge. Concentrations of finer-grained, higher-organic sediments in the region...
Ground water resources of Lee County
Donivan L. Gordon
1980, Report
Approximately 8.0 percent of the water used in Lee County comes from underground sources. It is estimated that the use of ground water in the county currently approaches 2.8 billion gallons per year. For comparison, this amount would provide each resident with 172 gallons of water a day during a...
Hydrochemical data for the Edwards aquifer in the San Antonio area, Texas
R.W. Maclay, P.L. Rettman, T. A. Small
1980, Texas Department of Water Resources Report LP-131
This report presents hydrochemical data that was collected as part of the investigations of the Edwards aquifer in the San Antonio area, Te xas, during 1970-78 and indicates other sources of available data. The report includes the results of chemical analyses of 159 water samples from 123 well s and...
Computer-composite mapping for geologists
J.N. van Driel
1980, Environmental Geology (3) 151-157
A computer program for overlaying maps has been tested and evaluated as a means for producing geologic derivative maps. Four maps of the Sugar House Quadrangle, Utah, were combined, using the Multi-Scale Data Analysis and Mapping Program, in a single composite map that shows the relative stability of the land...
The distribution and mobility of uranium in glassy and zeolitized tuff, Keg Mountain area, Utah, U.S.A.
R. A. Zielinski, D. A. Lindsey, J.N. Rosholt
1980, Chemical Geology (29) 139-162
The distribution and mobility of uranium in a diagenetically altered, 8 Ma old tuff in the Keg Mountain area, Utah, are modelled in this study. The modelling represents an improvement over similar earlier studies in that it: (1) considers a large number of samples (76) collected with good geologic control...
Goat paddock cryptoexplosion crater, Western Australia
J.E. Harms, D.J. Milton, J. Ferguson, D.J. Gilbert, W.K. Harris, B. Goleby
1980, Nature (286) 704-706
Goat Paddock, a crater slightly over 5 km in diameter (18??20??? S, 126??40???E), lies at the north edge of the King Leopold Range/Mueller Range junction in the Kimberley district, Western Australia (Fig. 1). It was noted as a geological anomaly in 1964 during regional mapping by the Bureau of Mineral...
Compositional controls on spinel clouding and garnet formation in plagioclase of olivine metagabbros, Adirondack Mountains, New York
J. M. McLelland, P.R. Whitney
1980, Contributions to Mineralogy and Petrology (73) 243-251
Olivine metagabbros from the Adirondacks usually contain both clear and spinel-clouded plagioclase, as well as garnet. The latter occurs primarily as the outer rim of coronas surrounding olivine and pyroxene, and less commonly as lamellae or isolated grains within plagioclase. The formation of garnet and metamorphic spinel is dependent upon...
The nature of fracturing and stress distribution in quartzite around the 1128-M (3700-FT) level of the crescent mine, Coeur d'Alene mining district, Idaho
C.H. Miller, E.H. Skinner
1980, Engineering Geology (16) 321-338
Silver and copper are the principal ores mined from the quartzite at the Crescent mine. Both the main ore-bearing veins and foliation in the quartzite are parallel to the nearly vertical formational contacts. Anisotropy of the quartzite is indicated by both dynamic and static tests. Disking and breakage of core...
A generalized garnet-forming reaction for metaigneous rocks in the Adirondacks
J. M. McLelland, P.R. Whitney
1980, Contributions to Mineralogy and Petrology (72) 111-122
A generalized reaction is presented to account for garnet formation in a variety of Adirondack metaigneous rocks. This reaction, which is the sum of five partial reactions written in aluminum-fixed frames of reference, is given by: 4(y+1+w)Anorthite+4 k(y+1+2 w)Olivine +4(1-k)(y+1+2 w)Fe-oxide+(8(y+1) -4 k(y+1+2 w))Orthopyroxene = 2(y+1)Garnet +2(y+1+2 w)Clinopyroxene+4 wSpinel where...
Analysis of borehole geophysical information across a uranium deposit in the Jackson Group, Karnes County, Texas
Jeffrey J. Daniels, James Henry Scott, Bruce D. Smith
1979, Open-File Report 79-585
Borehole geophysical studies across a uranium deposit in the Jackson Group, South Texas, show the three geochemical environments often associated with uranium roll-type deposits: an altered (oxidized) zone, an ore zone, and an unaltered (reduced) zone. Mineralogic analysis of the total sulfides contained in the drill core shows only slight...
