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Page 5063, results 126551 - 126575

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Geophysical well logs for eleven drill holes at the Colorado School of Mines Experimental Mine Site, Idaho Springs, Colorado
J.J. Daniels, J. H. Scott
1984, Open-File Report 83-235
The following geophysical well log measurements were made in eleven drill holes above the Colorado School of Mines Experimental Mine at Idaho Springs, Colorado: (1) acoustic velocity (2) resistivity, (3) caliper, (4) gamma-gamma density, (5) neutron-thermal neutron, (6) gamma ray, (7) induced polarization (IP), (8) self potential (SP), and magnetic...
Sandstone units of the Lee Formation and related strata in eastern Kentucky
Charles L. Rice
1984, Professional Paper 1151-G
Most of the Cumberland Plateau region of southeastern Kentucky is underlain by thick sequences of quartzose sandstone which are assigned for the most part to the Lee Formation. Much new information has been gathered about the Lee and related strata as a result of the cooperative mapping program of the...
The principle of superposition and its application in ground-water hydraulics
T. E. Reilly, O.L. Franke, G.D. Bennett
1984, Open-File Report 84-459
The principle of superposition, a powerful methematical technique for analyzing certain types of complex problems in many areas of science and technology, has important application in ground-water hydraulics and modeling of ground-water systems. The principle of superposition states that solutions to individual problems can be added together to obtain solutions...
Hydrology of area 53, northern Great Plains and Rocky Mountain coal provinces, Colorado, Wyoming, and Utah
N. E. Driver, J. M. Norris, Gerhard Kuhn
1984, Open-File Report 83-765
Hydrologic information and analysis are needed to aid in decisions to lease Federally owned coal and for the preparation of the necessary Environmental Assessments and Impact Study Reports. This need has become even more critical with the enactment of the Surface Mining Control and Reclamation Act of 1977 (Public Law...
Aeromagnetic, Bouguer gravity, and interpretation maps of the Sheep Hole-Cadiz Wilderness Study Area (CDCA-305), San Bernardino County, California
R.W. Simpson, R. E. Bracken, D.J. Stierman
1984, Miscellaneous Field Studies Map 1615-B
The Federal Land Policy and Management Act (Public Law 94-579, October 21, 1976) requires the U.S. Geological Survey and the U.S. Bureau of Mines to conduct mineral surveys on certain areas to determine their mineral resource potential. Results must be made available to the public and be submitted to the President...
Maps showing selected geology and phosphate resources of the Diamond Flat quadrangle, Caribou County, Idaho
Pamela Dunlap Derkey, Bea Johnston, Pamela Palmer, Alexander Zemanek
1984, Mineral Investigations Resource Map 78
This report summarizes information on the thickness, grade, lateral continuity, phosphate resources, and ownership of phosphate-bearing units in the Meade Peak Phosphatic Shale Member of the Phosphoria Formation in the Diamond Flat quadrangle. This report is one of a series of quadrangle reports prepared by the Idaho Bureau of Mines...
Land subsidence in the Santa Clara Valley, California as of 1980
J. F. Poland, R. L. Ireland
1984, Open-File Report 84-818
From 1916 to 1966 in the San Jose area of Santa Clara Valley, California, deficient rainfall and runoff was accompanied by a fourfold increase in groundwater withdrawals. In response the artesian head declined 180-240 ft. The land surface subsided 12.7 ft in San Jose, due to compaction of the fine-grained...
Maps showing selected geology and phosphate resources of the Fossil Canyon quadrangle, Bear Lake and Caribou Counties, Idaho
Pamela Dunlap Derkey, Pamela Palmer, Susan T. Miller
1984, Mineral Investigations Resource Map 82
This report summarizes information on the thickness, grade, lateral continuity, phosphate resources, and ownership of phosphate-bearing units in the Meade Peak Phosphatic Shale Member of the Phosphoria Formation in the Fossil Canyon quadrangle. This report is one of a series of quadrangle reports prepared by the Idaho Bureau of Mines...