Resource Type

Adsorbent Clays: Their Distribution, Properties, Production, and Uses (open access)

Adsorbent Clays: Their Distribution, Properties, Production, and Uses

From Abstract: "This bulletin is a summary of present knowledge of the adsorbent or bleaching clays-their distribution, field and laboratory identification, physical and chemical properties, uses, quality, and value. Problems in the drying, treating with acids, and washing are discussed, and methods of testing and rating decolorizing efficiency are described."
Date: 1943
Creator: Nutting, P. G.
System: The UNT Digital Library
Advances Related to United States and International Mineral Resources: Developing Frameworks and Exploration Technologies (open access)

Advances Related to United States and International Mineral Resources: Developing Frameworks and Exploration Technologies

The following report provides information for the public good about the origin, quality, and quantity of mineral resources world-wide. This Bulletin reports progress on some of the current activities of the Office of Mineral Resources and reflects the necessity for an international perspective regarding mineral resources and research technology.
Date: 1993
Creator: Scott, Richard W., Jr.; Detra, Pamela S. & Berger, Byron R.
System: The UNT Digital Library
Aluminous Lateritic Soil of the Republic of Haiti, W.I. (open access)

Aluminous Lateritic Soil of the Republic of Haiti, W.I.

From abstract: Aluminous lateritic soil containing as much as 50 percent of alumina (A120) Is found in several places in the Republic of Haiti. The largest deposits are on the Rochelois Plateau southwest of Miragoane on the Southern Peninsula. Mapping and drilling of the deposits indicate fifteen million long tons in place (dried basis). It is estimated that a minimum of 10 million long tons of this reserve is recoverable. The average chemical composition of this material is as follows: A1203, 46.8 percent; SiO2, 3.4 percent; T1O2, 2.8 percent; Fe20, 21.9 percent ; P206, 0.6 percent ; MnO5, 0.5 percent ; and loss on ignition, 24.1 percent. Other localities in which similar lateritic soil occurs are Beaumont in the Massif de la Hotte ; the vicinity of Savane Zombi in the Massif de la Selle ; and Savane Terre Rouge on the plateau northwest of Gonaives. In none of these regions were large deposits found.
Date: 1948
Creator: Goldich, Samuel S. & Bergquist, Harlan R.
System: The UNT Digital Library
Antimony Deposits of El Antimonio District Sonora, Mexico (open access)

Antimony Deposits of El Antimonio District Sonora, Mexico

From introduction: This is one of a series of detailed studies of the antimony deposits of Mexico, which were investigated by the United States Geological Survey and the Instituto de Geologia de Mexico. The investigation was part of a cooperative program sponsored by the Interdepartmental Committee for Scientific and Cultural Cooperation, under the auspices of the Department of State.
Date: 1949
Creator: White, Donald Edward & Guiza, Reinaldo
System: The UNT Digital Library
Antimony Deposits of the Stampede Creek Area, Kantishna District, Alaska (open access)

Antimony Deposits of the Stampede Creek Area, Kantishna District, Alaska

From abstract: The Stampede Creek area lies about 120 miles southwest of Fairbanks, Alaska. It is most readily accessible by air during the summer and by tractor road during the winter. Since 1936 approximately 2,400 tons of shipping-grade antimony ore and concentrates, containing about 1,300 tons of metallic antimony, have been produced at the Stampede mine. The mine was closed down in the spring of 1941, principally because of the high cost of transportation. The area is underlain largely by metamorphosed rocks of the Birch Creek schist. The schist has been warped and crumpled into many broad, open folds which strike northeast and also plunge to the northeast. The Stampede mine is in the schistose quartzite member of the Birch Creek schist.
Date: 1942
Creator: White, Donald Edward
System: The UNT Digital Library
Archean and Early Proterozoic Tectonic Framework of North-Central United States and Adjacent Canada (open access)

Archean and Early Proterozoic Tectonic Framework of North-Central United States and Adjacent Canada

From abstract: This report contains the analysis of the southern part of the Canadian Shield and the subsurface of the southern interior platform where they comprise two Archean cratons and three Early Proterozoic collisional orogens.
Date: 1995
Creator: Sims, P. K. (Paul Kibler), 1918-2011
System: The UNT Digital Library
Area Adjacent to the Turkey Creek Caldera, Cochise County, Arizona: Analytic Data and Geologic Sample Catalog (open access)

Area Adjacent to the Turkey Creek Caldera, Cochise County, Arizona: Analytic Data and Geologic Sample Catalog

From introduction: This report supplements similar reports prepared for the four 7.5-minute quadrangles that cover the Turkey Creek caldera and geologic map of the caldera.
Date: 1995
Creator: Du Bray, Edward A. & Pallister, John S.
System: The UNT Digital Library
The Ashland Coal Field, Rosebud, Powder River, and Custer Counties, Montana (open access)

The Ashland Coal Field, Rosebud, Powder River, and Custer Counties, Montana

From introduction: The detailed information concerning the coal deposits of the Ashland field set forth in this report has been obtained in the course of an investigation that has been conducted both as a part of the United States Geological Survey's general systematic study of western coal lands and as an aid in the administration of the public lands. With the information obtained on the location of outcrops, the number, distribution, and thickness of coal beds, the accessibility of the coal, and the thickness of the overburden, the public lands of the region are classified as to their coal value; coal-bearing lands are differentiated from noncoal-bearing lands; and the administration of the coal-land leasing law is facilitated.
Date: 1932
Creator: Bass, N. Wood
System: The UNT Digital Library
Bedrock Geology of the Paducah 1°x2° CUSMAP Quadrangle, Illinois, Indiana, Kentucky, and Missouri (open access)

Bedrock Geology of the Paducah 1°x2° CUSMAP Quadrangle, Illinois, Indiana, Kentucky, and Missouri

The following report interprets the geologic history of the Paducah quadrangle, focusing on depositional and tectonic evolution, particularly tectonic events that influenced sedimentation.
Date: 1998
Creator: Nelson, W. John
System: The UNT Digital Library
Birth and Development of Parícutin Volcano, Mexico (open access)

Birth and Development of Parícutin Volcano, Mexico

From introduction: In this report the authors have attempted to present a strictly factual account of the birth and development of Paricutin volcano and avoid any interpretive opinions that might break the true narrative of events.
Date: 1956
Creator: Foshag, William F. & González Reyna, Jenaro
System: The UNT Digital Library
The Bisbee Group of the Tombstone Hills, Southeastern Arizona: Stratigraphy, Structure, Metamorphism, and Mineralization (open access)

The Bisbee Group of the Tombstone Hills, Southeastern Arizona: Stratigraphy, Structure, Metamorphism, and Mineralization

From introduction: The purpose of this study is to establish a stratigraphic framework of the Bisbee Group in the Tombstone Hills, and to use this stratigraphy to unravel the complex history of folding, faulting, intrusion, and mineralization.
Date: 1996
Creator: Force, Eric R.
System: The UNT Digital Library
Bitumen-Bearing Deposits of the United States (open access)

Bitumen-Bearing Deposits of the United States

The following report summarizes the locations, resources, and petrophysical data of known bitumen-bearing deposits located primarily in Alabama, California, Kentucky, Texas, and Utah.
Date: 1988
Creator: Crysdale, Bonnie L. & Schenk, Christopher J.
System: The UNT Digital Library
Boundaries, Areas, Geographic Centers and Altitudes of the United States and the Several States, with a Brief Record of Important Changes in Their Territory (open access)

Boundaries, Areas, Geographic Centers and Altitudes of the United States and the Several States, with a Brief Record of Important Changes in Their Territory

From Forward: "The first edition of the record setting forth the history of the boundaries of the United States and the several States and Territories was prepared by Henry Gannett, assisted by Franklin G. Butterfield, and was published as Bulletin 13 of the United States Geological Survey in 1885. The present bulletin is a revision and enlargement of Bulletin 226 and includes additional matter incidentally connected with boundaries."
Date: 1923
Creator: Douglas, Edward M.
System: The UNT Digital Library
Burial and Thermal History of the Paradox Basin, Utah and Colorado, and Petroleum Potential of the Middle Pennsylvanian Paradox Formation (open access)

Burial and Thermal History of the Paradox Basin, Utah and Colorado, and Petroleum Potential of the Middle Pennsylvanian Paradox Formation

From abstract: This is a report on the burial and thermal history of the Paradox basin in Utah and Colorado, and the petroleum potential of the middle Pennsylvanian Paradox Formation.
Date: 1996
Creator: Nuccio, Vito F. & Condon, Steven M.
System: The UNT Digital Library
The Calcite Marble and Dolomite of Eastern Vermont (open access)

The Calcite Marble and Dolomite of Eastern Vermont

From introduction: The object of this bulletin is twofold-to locate definitely and to describe accurately the marbles and dolomites of eastern Vermont, with a view to setting forth their possible economic uses and to discuss whatever features of scientific interest they may present.
Date: 1915
Creator: Dale, T. Nelson
System: The UNT Digital Library
Cambrian Through Mississippian Rocks of the Powder River Basin, Wyoming, Montana, and Adjacent Areas (open access)

Cambrian Through Mississippian Rocks of the Powder River Basin, Wyoming, Montana, and Adjacent Areas

From abstract: This report describes Cambrian through Mississippian rocks in the Powder River Basin representing five depositional sequences that reflect both the biological evolution and the tectonic development of western North America.
Date: 1993
Creator: Macke, David L.
System: The UNT Digital Library
Carbon Dioxide in Mississippian Rocks of the Paradox Basin and Adjacent Areas, Colorado, Utah, New Mexico, and Arizona (open access)

Carbon Dioxide in Mississippian Rocks of the Paradox Basin and Adjacent Areas, Colorado, Utah, New Mexico, and Arizona

From abstract: This report is about six gas samples that were obtained from the Mississippian Leadville Limestone in the McElmo field, Colorado, and the Lisbon field, Utah. These samples were recorded to contain a high reading of carbon dioxide and the report investigates these results.
Date: 1995
Creator: Cappa, James A. & Rice, Dudley D.
System: The UNT Digital Library
Carnotite-Bearing Sandstone in Cedar Canyon, Slim Buttes, Harding County, South Dakota (open access)

Carnotite-Bearing Sandstone in Cedar Canyon, Slim Buttes, Harding County, South Dakota

From abstract: Carnotite-bearing sandstone and claystone have been found in the Chadron formation of the White River group of Oligocene age in the southern part of the Slim Buttes area, Harding County, S. Dak. The carnotite is an efflorescent yellow coating on lenticular silicified sandstone. Locally, the mineralized sandstone contains 0.23 percent uranium. The uranium and vanadium ions are believed to have been derived from the overlying mildly radioactive tuffaceous rocks of the Arikaree formation of Miocene age. Analyses of water from 26 springs issuing from the Chadron and Arikaree formations along the margins of Slim Buttes show uranium contents of as much as 200 parts per billion. Meteoric water percolating through tuffaceous rocks is thought to have brought uranium and other ions into environments in the Chadron formation that were physically and chemically favorable for the deposition of carnotite.
Date: 1955
Creator: Gill, James R. & Moore, George William
System: The UNT Digital Library
The Chakachamna-Stony Region, Alaska (open access)

The Chakachamna-Stony Region, Alaska

A report on the exploration and survey of the Chakachamna-Stony Region of Alaska.
Date: 1930
Creator: Capps, Stephen R.
System: The UNT Digital Library
Chromite and quicksilver deposits of the Del Puerto area, Stanislaus County, California (open access)

Chromite and quicksilver deposits of the Del Puerto area, Stanislaus County, California

From Introduction: "The present report is based on 10 weeks of field work from mid-November 1940 until late January 1941, and 4 days in May 1941. An area of 5 1/2 square miles in and about Del Puerto Canyon was mapped on a scale of 600 feet to 1 inch, and two small areas in the vicinity of the Adobe Canyon and Black Bart chromite mines were mapped on a scale of 200 feet to 1 inch."
Date: 1942
Creator: Hawkes, H. E., Jr.; Wells, Francis G. & Wheeler, D. P., Jr.
System: The UNT Digital Library
Chromite deposits of Kenai Peninsula, Alaska (open access)

Chromite deposits of Kenai Peninsula, Alaska

This report describes field work and research done in two areas of ultramafic rocks containing chromite deposits are known at the south end of Kenai Peninsula, Alaska. The Red Mountain is the other area covered in this report.
Date: 1942
Creator: Guild, Philip White
System: The UNT Digital Library
Chromite Deposits of Red Bluff Bay and Vicinity, Baranof Island, Alaska (open access)

Chromite Deposits of Red Bluff Bay and Vicinity, Baranof Island, Alaska

From introduction: The Red Bluff Bay area was examined briefly for the Geological Survey by John C. Reed and others in 1939. During the summer of 1941 the writers, with R. E. L. Rutledge, mapped this area on a scale of 1:12,000, and examined the serpentine masses in the interior during the course of reconnaissance trips into the surrounding region.
Date: 1942
Creator: Guild, Philip White & Balsley, James R., Jr.
System: The UNT Digital Library
Chronology of Late Cretaceous Igneous and Hydrothermal Events at the Golden Sunlight Gold-Silver Breccia Pipe, Southwestern Montana (open access)

Chronology of Late Cretaceous Igneous and Hydrothermal Events at the Golden Sunlight Gold-Silver Breccia Pipe, Southwestern Montana

A report about gold mineralization at the Golden Sunlight breccia pipe, southwestern Montana, is related to emplacement of Late Cretaceous alkali-calcic rhyolite and subsequent collapse of the Belt Supergroup wallrock and rhyolite in the pipe.
Date: 1996
Creator: DeWitt, Ed; Foord, Eugene E.; Zartman, Robert E.; Pearson, Robert C. & Foster, Fess
System: The UNT Digital Library
Clastic Pipes of Probable Solution-Collapse Origin in Jurassic Rocks of the Southern San Juan Basin, New Mexico (open access)

Clastic Pipes of Probable Solution-Collapse Origin in Jurassic Rocks of the Southern San Juan Basin, New Mexico

A report about pipes which contain downdropped strata located in the southwestern part of the San Jun Basin, New Mexico.
Date: 1992
Creator: Hunter, Ralph E.; Gelfenbaum, Guy & Rubin, David M.
System: The UNT Digital Library