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Page 808, results 20176 - 20200

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Geological and geochemical studies in the Wadi Bidah District, Kingdom of Saudi Arabia
C. W. Smith, B.C. Waters, M. Naqvi, R. G. Worl, A. M. Helaby, V. J. Flanigan, H.S. Sadek, R.M. Samater
1983, Open-File Report 83-672
Geological and geochemical followup studies of airborne electromagnetic anomalies in the Wadi Bidah district, southwestern Saudi Arabia, did not reveal metals of economic grade. Investigation of an anomaly enclosing the Rabathan ancient mine disclosed tightly folded and sheared Proterozoic tuffaceous rocks interlayered mostly with chert, dolomite, carbonaceous rocks, and volcanic...
Water resources investigations of the U.S. Geological Survey in Missouri, fiscal year 1983
Wanietia M. Kratzer
1983, Open-File Report 83-251
Water-resources investigations of the U.S. Geological Survey in Missouri consist of collecting hydrologic data and making interpretive investigations. These data and the results of the investigations are published or released by either the U.S. Geological Survey or by cooperating agencies. This report describes the data-collection activities and investigations in Missouri...
The international phosphate resource data base; development and maintenance
Nancy J. Bridges
1983, Open-File Report 83-490
The IPRDB (International Phosphate Resource Data Base) was developed to provide a single computerized source of geologic information about phosphate deposits worldwide. It is expected that this data base will encourage more thorough scientific analyses of phosphate deposits and assessments of undiscovered phosphate resources, and that methods of data collection...
Sourcebook of locations of geophysical surveys in tunnels and horizontal holes including results of seismic-refraction surveys, Rainier Mesa, Aqueduct Mesa, and Area 16, Nevada Test Site
R. D. Carroll, J. E. Kibler
1983, Open-File Report 83-399
Seismic refraction surveys have been obtained sporadically in tunnels in zeolitized tuff at the Nevada Test Site since the late 1950's. Commencing in 1967 and continuing to date (1982), extensive measurements of shear- and compressional-wave velocities have been made in five tunnel complexes in Rainier and Aqueduct Mesas and in...
Hydrogeologic data from parts of the Denver basin, Colorado
T. J. Major, S. G. Robson, J. C. Romero, Stanley Zawistowski
1983, Open-File Report 83-274
This report presents hydrogeologic data collected and compiled during 1956-81 as part of a comprehensive hydrogeologic data collected and compiled during 1956-81 as part of a comprehensive hdryogeologic investigation of the Denver basin, Colorado, by the U.S. Geological Survey in cooperation with the Colorado Department of Natural Resources, Division of...
Explanation to accompany reconnaissance geologic map of the De Long Mountains A3, B3, and parts of A4, B4 quadrangles, Alaska
Charles F. Mayfield, S.M. Curtis, Inyo Ellersieck, I.L. Tailleur
1983, Open-File Report 83-183
This map is one of a series of three reconnaissance geologic maps of the southern De Long Mountains quadrangle (fig. 1). Because the geology in the three map areas is similar, a composite map explanation has been designed to facilitate their combined use and give a better perspective of the...
Water resources of the Tulalip Indian Reservation, Washington
B. W. Drost
1983, Open-File Report 82-648
Water will play a significant role in the future development of the Tulalip Indian Reservation. Ground-water resources are sufficient to supply several times the 1978 population. Potential problems associated with increased ground-water development are saltwater encroachment in the coastal areas and septic-tank contamination of shallow aquifers. There are sufficient good-quality...
Trace-element geochemistry of postorogenic granites from the northeastern Arabian Shield, Kingdom of Saudi Arabia
John S. Stuckless, R. J. Knight, G. VanTrump, J. R. Budahn
1983, Open-File Report 83-287
Concentrations determined for all of the trace elements included in this study of postorogenic granites from the northeastern Arabian Shield are best described by log-normal distributions. The trace elements are divided into two groups: (1) compatible lithophile and siderophile elements (strontium, cobalt, scandium, manganese, europium, and titanium) and (2) incompatible...
Floods of April 1983 in southern Mississippi and southeastern Louisiana
Darrell D. Carlson, Gary D. Firda
1983, Open-File Report 83-685
Extreme flooding occurred in April 1983 in southern Mississippi and southeastern Louisiana. The floods resulted from a near-stationary cold front, which moved slowly across Louisiana and Mississippi. Flood heights and discharges of many streams exceeded previously known maximums of record, and for many the recurrence interval of peak discharge exceeded...
Floods of November 1978 to March 1979 in Arizona and west-central New Mexico
B. N. Aldridge, T.A. Hales
1983, Open-File Report 83-201
Widespread rainfall of 3 to 9 inches in the mountains area of Arizona and West-Central New Mexico during December 17-20, 1978, caused maximum known discharges on the Gila River in New Mexico and on several streams in Arizona. At Phoenix, the Salt River was the highest since 1920 but was...
Eruptive history of the Dieng Mountains region, central Java, and potential hazards from future eruptions
C. Dan Miller, R. Sushyar, Santoso, S. Hamidi
1983, Open-File Report 83-68
The Dieng Mountains region consists of a complex of late Quaternary to recent volcanic stratocones, parasitic vents, and explosion craters. Six age groups of volcanic centers, eruptive products, and explosion craters are recognized in the region based on their morphology, degree of dissection, stratigraphic relationships, and degree of weathering. These...
Sketch maps, sections and laboratory analyses of peat resources in deposits of southern and western Maine
Cornelia Clermont Cameron, Michael K. Mullen
1983, Open-File Report 83-18
Peat deposits in southern and western Maine were investigated for their estimated potential as peat resources suitable for energy, horticultural, and agricultural uses. Fifty-six sketch maps illustrate the areal extent, thickness, and amount of commercial-quality peat. The total yield is estimated at 27,736,400 short tons air-dried peat. Ash content is...
Selected hydrologic data, Kolob-Alton-Kaiparowits coal-fields area, south-central Utah
Gerald G. Plantz
1983, Open-File Report 83-871
The Kolob-Alton-Kaiparowits coal-field area (pi. 1) includes about 4,500 square miles in parts of the Colorado River Basin and the Great Basin. The area varies in altitude from less than 4,000 to more than 10,000 feet, and is comprised chiefly of plateaus, benches, and terraces that are dissected by deep,...