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Mafic and Ultramafic Xenoliths from Volcanic Rocks of the Western United States

Description: From abstract: Mafic and ultramafic xenoliths in the Western United States are present in volcanic rocks ranging from lamprophyric to dacitic in composition and are found in every major tectonic province from the Coast ranges from California to the Great Plains. Xenoliths from 68 localities are described here, but new localities are being discovered, and much remain to be learned about their distribution with respect to the tectonic and geophysical framework of the Western United States.
Date: 1988
Creator: Wilshire, Howard Gordon; Meyer, C. E.; Nakata, John K.; Calk, L. C.; Shervais, John W.; Nielson, J. E. et al.
Location: None
Partner: UNT Libraries Government Documents Department
open access

Muscovite in the Spruce Pine District, North Carolina

Description: From Abstract: "This report describes the occurrence of the mica and its physical properties among which is an unusually wide range of colors. A table is presented showing the results of power-factor measurements made by the National Bureau of Standards on 196 samples of sheet mica from 109 mica mines and 15 feldspar mines.It is concluded that more systematic planning of mica mining, for the district as a whole. would result in an average yearly production of at least 90,000 pounds of relativel… more
Date: 1942
Creator: Kesler, Thomas L. (Thomas Lingle), 1908-1997 & Olson, J. C. (Jerry Chipman), 1917-2013
Partner: UNT Libraries Government Documents Department

Coos Bay, Oregon

Description: Map showing biological resources (aquatic organisms, terrestrial organisms, land use, etc.) in the Coos Bay region of the Pacific coast area. Scale 1:250,000.
Date: 1981
Creator: U.S. Fish and Wildlife Service
Location: None
Partner: UNT Libraries Government Documents Department

Ukiah, California

Description: Map showing biological resources (aquatic organisms, terrestrial organisms, land use, etc.) in the Ukiah region of the Pacific coast area. Scale 1:250,000.
Date: 1981
Creator: U.S. Fish and Wildlife Service
Location: None
Partner: UNT Libraries Government Documents Department

Eureka, California

Description: Map showing biological resources (aquatic organisms, terrestrial organisms, land use, etc.) in the Eureka region of the Pacific coast area. Scale 1:250,000.
Date: 1981
Creator: U.S. Fish and Wildlife Service
Location: None
Partner: UNT Libraries Government Documents Department

San Diego, California

Description: Map showing biological resources (aquatic organisms, terrestrial organisms, land use, etc.) in the San Diego region of the Pacific coast area. Scale 1:250,000.
Date: 1981
Creator: U.S. Fish and Wildlife Service
Location: None
Partner: UNT Libraries Government Documents Department
open access

Notes on the geology of uranium

Description: A report discussing features of uranium that may be important in searching for and appraising deposits.
Date: March 1956
Creator: Klepper, Montis Ruhl; Wyant, Donald G.; Duncan, Donald C., 1911-1990; Danilchik, Walter; Staatz, Mortimer H.; Barnes, Harley et al.
Partner: UNT Libraries Government Documents Department
open access

Stratigraphy of the area between Hernando and Hardee counties, Florida

Description: "This report, one of four on the peripheral areas, describes Cenozoic rocks on the northern and eastern edges of the land-pebble phosphate district, including part of the hard rock phosphate belt, Figure 1 and Plate 1 show the area studied."
Date: October 1955
Creator: Ketner, Keith Brindley & McGreevy, L. J.
Partner: UNT Libraries Government Documents Department
open access

Geology and Mineralogy of the J.J. Mine, Jo Dandy Area, Montrose County, Colorado

Description: Introduction: Detailed geologic mine mapping and sampling of the J.J. mine in the Jo dandy area, Montrose County, Colo., were undertaken to study a vanadium-uranium ore body in terms of the physical relationships of ore to host rock, the paragenetic sequence of ore minerals, and the sequential development of an oxidized suite of ore minerals from unoxidized ore.
Date: September 1955
Creator: Elston, Donald Parker & Botinelly, Theodore
Partner: UNT Libraries Government Documents Department
open access

Radiometric Reconnaissance Examination in Southeastern Pennsylvania and Western New Jersey

Description: Abstract: In May 1950, 350 miles of road was traversed in the vicinity of a torbernite locality in New Jersey. The radioactivity of the area traversed was two to three times above normal, averaging 0.003 percent equivalent uranium. It is estimated that there is 1,000 tons of rock averaging 0.009 percent uranium at the torbernite locality. The presence of this area of above-normal radioactivity suggests that further study is needed in the Piedmont belt and the flanking sediments, which may conta… more
Date: December 1951
Creator: Stewart, Robert H.
Partner: UNT Libraries Government Documents Department
open access

Tectonic Map of Western North Dakota Showing the Distribution of Uranium Deposits

Description: From introduction: A tectonic map for the northern part of the Cordilleran Foreland / is being compiled to aid in establishing the geologic setting of uranium deposits within the region and to determine relationships, if any, that exist between the distribution of uranium deposits and the regional tectonic pattern (Osterwald, 1955).
Date: January 1956
Creator: Osterwald, Frank W.
Partner: UNT Libraries Government Documents Department
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