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Page 5114, results 127826 - 127850

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Post-orogenic peralkaline and calc-alkaline granites and associated mineralization of the Arabian Shield, Kingdom of Saudi Arabia
D. B. Stoeser, James Earl Elliott
1979, Open-File Report 79-1323
Following a long period of island arc-like orogenic activity, post-orogenic granites of Pan-African age (670-550 m.y.) were emplaced throughout the Arabian Shield. Most of these rocks are typical subsolvus calc-alkaline biotite monzogranite. The early Pan-African granites are associated with widespread small tholeiitic gabbro intrusions, many of which are layered. The...
Uranium potential of the Big John Caldera, Beaver County, Utah
Thomas August Steven, Charles G. Cunningham, John J. Anderson
1979, Open-File Report 79-527
The Big John caldera is a small subsidence structure in the Marysvale volcanic field, high along the western flank of the Tushar Mountains in west-central Utah (fig. 1). This caldera formed 22 m.y. ago in response to ash-flow eruptions of the Delano Peak Tuff Member of the Bullion Canyon Volcanics....
Phosphatic Permian rocks of the Adobe Range, Nevada, and their environment of deposition
Keith Brindley Ketner
1979, Open-File Report 79-239
Permian sedimentary rocks in the Adobe range, northern Nevada, are phosphatic, and although the particles of phosphate are relatively more disseminated, they closely resemble the rocks of the Phosphoria Formation. In the northern Adobe Range, where the entire Permian sequence is approximately correlative with the Phosphoria Formation, it is 200...
Preliminary geological interpretation and lithologic log of the exploratory geothermal test well (INEL-1), Idaho National Engineering Laboratory, eastern Snake River Plain, Idaho
David J. Doherty, Lisa Ann McBroome, Mel A. Kuntz
1979, Open-File Report 79-1248
A 10,365 ft (3,159 m) geothermal test well was drilled in the spring of 1979 at the Idaho National Engineering Laboratory, eastern Snake River Plain, Idaho: The majority of rock types encountered in the borehole are of volcanic origin. An upper section above 2,445 ft (745 m) consists of basaltic...
Impact of flow regulation and powerplant effluents on the flow and temperature regimes of the Chattahoochee River— Atlanta to Whitesburg, Georgia
Robert E. Faye, Harvey E. Jobson, Larry F. Land
1979, Professional Paper 1108
A calibrated and verified transient flow-temperature model was used to evaluate the effects of flow regulation and powerplant loadings on the natural temperature regime of the Chattahoochee River in northeast Georgia. Estimates were made of both instantaneous and average natural temperatures in the river during an 8-day period in August...
Subsurface stratigraphy and geochemistry of late Quaternary evaporites, Searles Lake, California, with a section on radiocarbon ages of stratigraphic units
George I. Smith, Minze Stuiver
1979, Professional Paper 1043
Searles Lake is a dry salt pan, about 100 km 2 in area, that lies on the floor of Searles Valley, in the desert of southeast California. Several salt bodies of late Quaternary age lie beneath the surface, mostly composed of sodium and potassium carbonate, sulfate, chloride, and borate minerals....