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Page 5199, results 129951 - 129975

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Not all publications have extents, not all extents are completely accurate
Statistical treatment and preliminary interpretation of chemical data from a uranium deposit in the northeast part of the Church Rock area, Gallup mining district, New Mexico
C.S. Spirakis, C. T. Pierson, E.S. Santos, N.S. Fishman
1983, Open-File Report 83-379
Statistical treatment of analytical data from 106 samples of uranium-mineralized and unmineralized or weakly mineralized rocks of the Morrison Formation from the northeastern part of the Church Rock area of the Grants uranium region indicates that along with uranium, the deposits in the northeast Church Rock area are enriched in...
A bibliography of stockwork molybdenite deposits and related topics (with an emphasis on the North American literature)
Celia H. Steigerwald, Felix E. Mutschler, Steve Ludington
1983, Open-File Report 83-382
This bibliography of 1117 citations brings together references on stockwork molybdenite deposits and related topics in a format that can be sorted by topic and(or) geographic area. Each reference is preceded by a key, or keys, which may be read and sorted visually or by computer, The bibliography is available...
A statistical summary of data from the U.S. Geological Survey's national water quality networks
R. A. Smith, R. B. Alexander
1983, Open-File Report 83-533
The U.S. Geological Survey Operates two nationwide networks to monitor water quality, the National Hydrologic Bench-Mark Network and the National Stream Quality Accounting Network (NASQAN). The Bench-Mark network is composed of 51 stations in small drainage basins which are as close as possible to their natural state, with no human...
Slides showing quantitative models for mineral-resource assessment of the Rolla 1 degree x 2 degrees Quadrangle, Missouri
Kim-Marie Walker, S.K. Jenson, J. R. Francica, D. A. Hastings, C. M. Trautwein, W. P. Pratt
1983, Open-File Report 83-387
Th.is report consists of nineteen 35-mm color slides sh.owing digital synthesis and quantitative modeling of five geologic recognition criteria for assessment of Mississippi Valley-type resource potential in the Rolla 1° x 2° quadrangle, Missouri. The digital synthesis and quantitative modeling (Pratt and others, 1982) was done to supplement an earlier...
Basic program "IPFLTR" for induced polarization data reduction and filtering
Hamdy S. Sadek
1983, Open-File Report 83-485
The recently developed induced polarization (IP) mapping technique can be successfully applied to IP dipole-dipole data and includes three types of filters that can be applied to IP pseudosections that have IP anomalies caused by different types of sources. The technique yields a single output value per station; this value...
The environmental history and present condition of Saudi Arabia's northern sand seas
John W. Whitney, D.J. Faulkender, Meyer Rubin
1983, Open-File Report 83-749
Saudi Arabia's northern sand seas are composed dominantly of stable dune systems, even though the modern climate is arid. The stable dunes are large and support a sparse semidesert vegetation. Active dunes are small and commonly confined to the crests of stable dunes; they comprise less than 5 percent of...
Computer-generated mineral commodity deposit maps
Paul G. Schruben, J. Thomas Hanley
1983, Open-File Report 83-410
This report describes an automated method of generating deposit maps of mineral commodity information. In addition, it serves as a user's manual for the authors' mapping system. Procedures were developed which allow commodity specialists to enter deposit information, retrieve selected data, and plot deposit symbols in any geographic area within...
Long-range plans for hydrologic investigations in New Mexico
H. L. Case III, G. E. Welder
1983, Open-File Report 83-696
Objectives of the hydrologic-data-collection projects presented in this report include continuing to identify future data needs; conducting an analysis of the water-quality, ground-water, and surface-water observation networks; and entering all available current and historical hydrologic data into the U.S. Geological Survey Water Data Storage and Retrieval System (WATSTORE). Objectives of...
Filling of Spirit Lake, Washington, May 18, 1980 to July 31, 1982
William Meyer, Philip J. Carpenter
1983, Open-File Report 82-771
The rockslide/debris avalanche from the north face of Mount St. Helens that precipitated the volcano 's eruption on May 18, 1980 , blocked outflow from Spirit Lake, Washington. There has been no surface outflow since that time. From May 21, 1980, when the first measurement of lake level was made,...
Specifications for updating USGS land use and land cover maps
Valerie A. Milazzo
1983, Open-File Report 83-116
To meet the increasing demands for up-to-date land use and land cover information, a primary goal of the U.S. Geological Survey's (USGS) national land use and land cover mapping program is to provide for periodic updating of maps and data in a timely and uniform manner. The technical specifications for...
A hydrogeochemical survey in east-central Nevada
John B. McHugh, W. Roger Miller, Walter H. Ficklin
1983, Open-File Report 83-286
A hydrogeochemical survey utilizing waters from springs and wells was conducted in east-central Nevada. None of the trace elements commonly associated with mineralization were found to be highly anomalous in the study area. Slightly anomalous values for some elements were found in the southern valleys of the study area and...
Availability and chemical quality of water from surficial aquifers in Southwest Minnesota
D. G. Adolphson
1983, Water-Resources Investigations Report 83-4030
The principal surficial aquifers in southwest Minnesota consist of outwash and alluvium material deposited in river valleys. The largest and most productive of these aquifers occupy the valleys of the Cottonwood, Des Moines, Redwood, and Rock Rivers and of tributaries to the Big Sioux River. Minor aquifers, adequate only for...