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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
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
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
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
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
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
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
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
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
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
Coastal Sedimentation Along a Segment of the Interior Seaway of North America, Upper Cretaceous Baxter Shale, and Blair and Rock Springs Formations, Rock Springs Uplift, Southwest Wyoming
A report which examines the sedimentary rocks deposited along a segment of the west coast of the interior seaway of North America in southwest Wyoming during the late Santonian and early Campanian subages of the Late Cretaceous Epoch.
Date:
1993
Creator:
Roehler, Henry W.
System:
The UNT Digital Library
Comparison of the Cretaceous-Tertiary Boundary Impact Events and the 0.77-Ma Australasian Tektite Event: Relevance to Mass Extinction
A report that discusses the interpretation of impact shock evidence found in the K-T boundary sections and discusses the constraints imposed by the Australasian tektites and microtektites on the role of the 180-km Chicxulub crater in mass extinction.
Date:
1993
Creator:
Chao, E. C. T.
System:
The UNT Digital Library
Contributions to Economic Geology: 1904
From letter of transmittal: The report contains 63 contributions from 37 members of the Survey who have been engaged more or less continuously throughout the year in economic work, together with brief statements by the geologists in charge of the section of metalliferous ores and the section of nonmetalliferous economic minerals, of the extent and character of the economic work being carried on in the Survey.
Date:
1905
Creator:
Emmons, Samuel Franklin & Hayes, C. W.
System:
The UNT Digital Library
Contributions to Economic Geology (Short Papers and Preliminary Reports), 1911: Part 1 -- Metals and Nonmetals Except Fuels
From introduction: The growing economic importance of the Carrville district, Trinity County, California merits notice, and it is hoped that this brief report will direct attention toward it, to the end that mining in general may be benefited.
Date:
1913
Creator:
Lindgren, Waldemar
System:
The UNT Digital Library
Contributions to Economic Geology (Short Papers and Preliminary Reports), 1913: Part 2 -- Mineral Fuels
From introduction: This report determines the geographic distribution and thickness of the bituminous shale, or oil shale, or tar shale of the Green River formation of the Uinta Basin in Colorado and Utah.
Date:
1915
Creator:
Campbell, Marius R. & White, David
System:
The UNT Digital Library
The Coso Quicksilver District, Inyo County, California
From abstract: The Coso quicksilver district, which is in the Coso Range, Inyo County, Calif., produced 231 flasks of quicksilver between 1935 and 1939. The quicksilver mineral, cinnabar, was not recognized in the district until 1929, although the hot springs near the deposits have been known since about 1875...The granitic rock on which much of the sinter rests is considerably altered. The cinnabar was deposited as films and grains in open spaces in the sinter, during one stage in a sequence of hot spring activities that still continues. The amount of sinter in the district is estimated to be about 1,800,000 tons. Although the greater part of this does not contain much cinnabar, the total quantity of such material is large enough to be of interest as a low-grade ore.
Date:
1943
Creator:
Ross, Clyde P. & Yates, Robert G.
System:
The UNT Digital Library
Economic Geology of the Independence Quadrangle, Kansas
From introduction: The aim of this paper is to present the substance of what is known concerning the distribution, occurrence, and development of the oil and gas of the quadrangle, and to note briefly the more important industries growing out of these natural resources or depending on them within the territory considered.
Date:
1906
Creator:
Schrader, Frank C. & Haworth, Erasmus
System:
The UNT Digital Library
Effect of Permafrost on Cultivated Fields, Fairbanks Area, Alaska
From introduction: This report describes the destructive effect of permafrost on cultivated fields and delineates the parts of the Fairbanks area which are least suitable for agriculture because of the character of the underlying permafrost. Studies by the author indicate that agriculture will be affected by similar permafrost conditions throughout areas on the north side of the Tanana Valley within 100 miles of Fairbanks.
Date:
1954
Creator:
Péwé, Troy Lewis
System:
The UNT Digital Library
Erosion Studies at Parícutin, State of Michoacán, Mexico
From abstract: Paricutin is 320 kilometers west of Mexico City and is reached by air, rail, or paved highway to Uruapan, Michoacan, and thence by 37 kilometers of paved and dirt road to lava-destroyed San Juan Parangaricutiro, 5 kilometers north of the cone.
Date:
1950
Creator:
Segerstrom, Kenneth
System:
The UNT Digital Library
[Evolution of Sedimentary Basins/Onshore Oil and Gas Investigations--Santa Maria Province: Chapters W and X]
From abstract: Bulletin W is about the deformation of the Mesozoic Franciscan Complex of the Eastern Santa Maria basin in California. Bulletin X is about the regional thermal maturity of the surface rocks of the mentioned basin as well as the Santa Barbara-Ventura basin area in California.
Date:
1998
Creator:
Wahl, Arthur D.; Naeser, Nancy D.; Isaacs, Caroline M. & Keller, Margaret A.
System:
The UNT Digital Library
[Evolution of Sedimentary Basins/Onshore Oil and Gas Investigations--Santa Maria Province: Chapters Y and Z]
From abstract: A complex Neogene history characterizes the offshore Santa Maria basin and the northwest margin of the western Transverse Ranges, California. This history includes the transition from subduction to a transtensional and then transpressional plate boundary, including about 900 of clockwise rotation of the western Transverse Ranges. This report uses seismic reflection data to document the geometry of structures that accommodated this deformation and offshore well data to date and correlate the sediments which were affected by the different tectonic episodes.
Date:
1999
Creator:
Sorlien, Christopher C.; Nicholson, Craig; Luyendyk, Bruce P.; Miller, Kate C. & Meltzer, Anne S.
System:
The UNT Digital Library
[Evolution of Sedimentary Basins--Paradox Basin: Chapters C and D]
From abstract: The report for document C is about the tectonic trends of the northern part of the Paradox Basin of southeastern Utah and southwestern Colorado, as derived from Landsat multispectral scanner imaging and geophysical and geologic mapping. The report for document D is about an uncontrolled X-band airborn radar-image mosaic that was compiled for the western three-fifths of the Moab 1° x 2° quadrangle of southeastern Utah and southwestern Colorado.
Date:
1994
Creator:
Friedman, Jules D.; Case, James E.; Simpson, Shirley L. & Heller, Joan S.
System:
The UNT Digital Library
Evolution of Sedimentary Basins--San Juan Basin: Chapters B-D
From abstract: This report describes the depositional environments of the Chinle Formation that was deposited in a complex fluvial-deltaic-lacustrine system in the area of the present-day eastern San Juan basin and Chama basin. Lithofacies include conglomerate and planar- and trough-crossbedded sandstone; bentonitic mudstone and sandstone; black, organic carbon-rich mudstone; large-scale, trough crossstratified siltstone, sandstone, and mudstone; and thickbedded, bioturbated, fine-grained sandstone and siltstone.
Date:
1989
Creator:
Dubiel, Russell F.; Ridgley, Jennie L.; Armstrong, Augustus K. & Holcomb, Lee D.
System:
The UNT Digital Library
[Evolution of Sedimentary Basins--San Juan Basin: Chapters J and K]
From introduction to each respective report: Report J summarizes the results of several studies concerning the stratigraphy and sedimentology of uppermost Jurassic to lowermost Upper Cretaceous rocks in the San Juan basin and adjacent areas. Report K describes using X-ray diffraction techniques to determine the occurrence and distribution of clay minerals in the upper part of the Brushy Basin Member and in the Burro Canyon Formation in the Four Corners area.
Date:
1992
Creator:
Aubrey, William M. & Skipp, Gary
System:
The UNT Digital Library