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Page 5032, results 125776 - 125800

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Not all publications have extents, not all extents are completely accurate
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...
Appraisal of the water resources of the Big Sioux aquifer, Brookings, Deuel, and Hamlin counties, South Dakota
Neil C. Koch
1980, Water-Resources Investigations Report 80-100
The Big Sioux aquifer in Brookings, Deuel, and Hamlin Counties, South Dakota, has been extensively developed and in some areas discharge, principally by wells, from the aquifer may be exceeding recharge to the aquifer.A finite-difference method digital model was used to simulate steady-state conditions of the Big Sioux aquifer. Average...
Mekometer measurements in the Imperial Valley, California, 1980
Ronald G. Mason, C.N. Crook, Perry Rowley Wood
1980, Open-File Report 81-1141
During a six-week period in the Spring of 1980, approximately seven months after the October 15, 1979 earthquake, parts of the Imperial Valley mekometer network (Fig. 1) were re-measured for comparison with measurements made during the twelve months preceding the earthquake and the six weeks following it. The purpose was...
Probable high ground-water levels on Cape Cod, Massachusetts
Michael H. Frimpter
1980, Open-File Report 80-1008
Water-level records from 146 short-term (1 year) observation wells and 13 long-term (16-28 years) observation wells were used to estimate the probable high ground-water level that could occur at any site on Cape Cod. The estimation was based on correlation of a single water-level measurement from a test site with...
Summaries of data on and lists of references to metallic and selected nonmetallic mineral deposits in the Ketchikan and Prince Rupert quadrangles, Alaska
1980, Open-File Report 80-1053
These summaries of data on metallic and selected nonmetallic mineral occurrences and lists of selected references to them in Geological Survey, U.S. Bureau of Mines, and State of Alaska Division of Geological and Geophysical Surveys (and predecessor State and Territorial agencies) reports and maps released before Jan. 1, 1980, and...
The surficial aquifer at the U.S. Naval Station near Mayport, Florida
Bernard J. Franks
1980, Open-File Report 80-765
The surficial aquifer at the U.S. Naval Station near Mayport, Florida, consists of about 70 feet of unconsolidated sand, shell , and clay. The principal water-bearing zone is a shell bed 35 to 55 feet below land surface. The aquifer is unconfined, and the water table was about 4 feet...
Outer Continental Shelf oil and gas activities in the Mid-Atlantic and their onshore impacts: a summary report, November 1979
George S. Macpherson, Charles A. Bookman
1980, Open-File Report 80-17
Outer continental shelf (OCS) activity in the Mid-Atlantic Region to date has been limited to exploratory drilling. The first rig began drilling in March 1978. More rigs quickly moved into the Region, and as many as nine were working at the same time for a brief period in January 1979. As of November 1979,...
Dissolved-solids concentrations and loads in return flows to the Colorado River from agricultural land in southern California
John M. Klein, Wesley L. Bradford
1980, Water-Resources Investigations Report 80-52
The dissolved-solids concentration in Colorado River water increases from less than 50 mg/L (milligrams per liter) at the river's origin to about 700 mg/L at the California border and to about 900 mg/L at the United States-Mexico boundary. Much of the latter increase is due to depletion by agricultural use...
Geologic and operational summary, COST no. G-1 well, Georges Bank area, North Atlantic OCS
Roger V. Amato, John W. Bebout, editor(s)
1980, Open-File Report 80-268
The first Continental Offshore Stratigraphic Test (COST) well on the U.S. North Atlantic Outer Continental Shelf (OCS) was drilled by Ocean Production Company between April 6 and July 26, 1976, and designated the COST No. G-1. Geological and engineering data obtained from this deep well in the Georges Bank Basin...
Hydrogeologic data for the Mississippi Embayment of southeastern Missouri
Richard R. Luckey, Dale L. Fuller
1980, Open-File Report 79-421
The Mississippi embayment of southeastern Missouri is a 4 ,000-square-mile agricultural area that is presently (1979) undergoing rapid development for irrigation. In July 1974, a project was initiated to evaluate the water resources of the area, determine the extent of irrigation, and to assess the future potential for irrigation supplies....
Chemical analysis of 659 coal samples from the eastern United States
Peter Zubovic, Charles L. Oman, Linda J. Bragg, S.L. Coleman, N. H. Rega, M.E. Lemaster, H.J. Rose, D. W. Golightly, John Puskas
1980, Open-File Report 80-2003
This report includes the analytical data on 659 coal samples from 8 States east of the Mississippi River. The number of samples from each State are: Pennsylvania, 132; Ohio, 101; Maryland, 25; West Virginia, 254; Virginia, 33; Indiana, 49; Massachusetts, 5; and Rhode Island, 10. The analytic data are filed...