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Muscovite in the Spruce Pine District, North Carolina
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 relatively clear sheet and possibly much more."
Date:
1942
Creator:
Kesler, Thomas L. (Thomas Lingle), 1908-1997 & Olson, J. C. (Jerry Chipman), 1917-2013
System:
The UNT Digital Library
The Slumgullion Earth Flow: A Large-Scale Natural Laboratory
A report about the Slumgullion slide and landslides. It discusses climate changed and how landslides are measured.
Date:
1996
Creator:
Varnes, D. J. & Savage, W. Z.
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
Patterns of Diagenesis in Lower and Middle Pennsylvania Sandstones of the Illinois Basin, Illinois, Indiana, and Kentucky.
This following report discusses the study of Lower and Middle Pennsylvanian sandstones of the Illinois Basin examined for evidence of regional diagenetic and fluid-flow patterns.
Date:
1996
Creator:
Hansley, Paula L.
System:
The UNT Digital Library
Gazetteer of Planetary Nomenclature 1994
A report about nomenclature related to planets in the solar system. It contains detailed information about all names of topographic and albedo features on planets and satellites.
Date:
1995
Creator:
Batson, Raymond M. & Russell, Joel F.
System:
The UNT Digital Library
The Sedimentary Carbonate-Hosted Giant Bayan Obo REE-Fe-Nb Ore Deposit of Inner Mongolia, China: A Cornerstone Example for Giant Polymetallic Ore Deposits of Hydrothermal Origin
A report which describes the overall characteristics of Bayan Obo ore deposit. The paper examines Bayan Obo as a cornerstone example of giant ore deposits of hydrothermal origin.
Date:
1997
Creator:
Chao, E. C. T.
System:
The UNT Digital Library
Cowtrack Mountain and Glass Mountain Quadrangles, California and Nevada—Analytic Data
A paper about modal and major-element chemical data on the Mesozoic plutonic rocks of the Cowtrack Mountain and Glass Mountain quadrangles are presented in tables, maps, and diagrams.
Date:
1988
Creator:
Bateman, Paul C.; Krauskopf, Konrad B. & Sheridan, Michael F.
System:
The UNT Digital Library
The Seaman Volcanic Center—A Rare Middle Tertiary Stratovolcano in Southern Nevada
A report about the Seaman volcanic center which is a composite, middle Tertiary stratovolcano in southern Nevada.
Date:
1993
Creator:
Du Bray, Edward A.
System:
The UNT Digital Library
Problems with Applying Topographically Driven Flow to Genesis of the Upper Mississippi Valley Zinc-Lead District and to Fluid Flow in the Illinois Basin
A report about how topographically driven ground-water flow and other processes that involve dewatering of basins fail to account for the temperatures indicated by fluid inclusion and sulfur isotope studies in the Upper Mississippi Valley zinc-lead district on the northern edge of the Illinois Basin.
Date:
1995
Creator:
Spirakis, Charles S.
System:
The UNT Digital Library
Distribution of Benthic Foraminifers (>125 µm) in the Surface Sediments of the Arctic Ocean
A report which discusses the distribution of benthic foraminifers in surface sediment samples from 49 box cores collected by the U.S. Geological Survey.
Date:
1999
Creator:
Osterman, Lisa E.; Poore, Richard Z. & Foley, Kevin M.
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
An Overview of Pleistocene and Holocene Inland Dunes in Georgia and the Carolinas--Morphology, Distribution, Age, and Paleoclimate
A report about dunes which are vegetated, inactive, and are made of quartz.
Date:
1994
Creator:
Markewich, H. W. & Markewich, William
System:
The UNT Digital Library
Regional Thermal Metamorphism and Deformation of the Sitka Graywacke, Southern Baranof Island, Southeastern Alaska
A report about thermally metamorphosed rocks under Southern Baranof Island. It represents one of the largest regions of metamorphosed rock.
Date:
1987
Creator:
Loney, Robert A. & Brew, David A.
System:
The UNT Digital Library
Paleomagnetic and 40Ar/39Ar Results from the Grant Intrusive Breccia and Comparison to the Permian Downeys Bluff Sill—Evidence for Permian Igneous Activity at Hicks Dome, Southern Illinois Basin
A report about applying 40Ar/39Ar dating methods, along with other rock techniques, to determine the age of emplacement and the cooling history of the Grant intrusive breccia at Hicks dome in Illinois.
Date:
1997
Creator:
Reynolds, Richard L.; Goldhaber, Martin B. & Snee, Lawrence W.
System:
The UNT Digital Library
Response Plan for Volcano Hazards in the Long Valley Caldera and Mono Craters Region, California
A report about volcano response plans. It discusses a four-level color code with successive conditions. For instance, green means no risk while red means an eruption is occurring.
Date:
September 24, 2001
Creator:
Hill, David P.
System:
The UNT Digital Library
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
Hydrothermal Alteration in the Mount Hood Area, Oregon
A report which describes the hydrothermal alteration of numerous outcrop samples collected in the vicinity of Mount Hood, as well as drill cuttings from 13 of the geothermal drill holes for which we were able to obtain sample splits.
Date:
1993
Creator:
Bargar, Keith E.; Keith, Terry E. C. & Beeson, Melvin H.
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
Rockfalls and Debris Avalanches in the Smugglers Notch Area, Vermont
A report about rockfalls and debris avalanches on the southern approach to Smuggles Notch in Vermont.
Date:
1994
Creator:
Lee, Fitzhugh T.; Odum, Jack K. & Lee, John D.
System:
The UNT Digital Library
Colorado Yule Marble—Building Stone of the Lincoln Memorial
A report about the quality and consistency of the Colorado Yule marble mined in Marble, Colorado.
Date:
1998
Creator:
McGee, Elaine S.
System:
The UNT Digital Library
Isotopic Ages and Stratigraphy of Cenozoic Rocks of the Marysvale Volcanic Field and Adjacent Areas, West-Central Utah
A report about the Marysvale volcanic field that lies at the east end of the Pioche-Marysvale igneous belt.
Date:
1994
Creator:
Rowley, Peter D.; Mehnert, Harald M.; Naeser, Charles W.; Snee, Lawrence W.; Cunningham, Charles G.; Steven, Thomas A. et al.
System:
The UNT Digital Library
Source Rock Potential of the Lower Part of the Mississippian St. Louis Limestone in South-Central Indiana
A report about the carbonate-evaporite sequence of the lower part of the Mississippian St. Louis Limestone. There is organic rich strata that may be good to excellent hydrocarbon source rocks.
Date:
1995
Creator:
Ridgley, J. L. & Nuccio, V. F.
System:
The UNT Digital Library
Paleocene Vertebrates from Jabal Umm Himar, Kingdom of Saudi Arabia
A report about fossils in Saudi Arabia. The report discusses locality, higher taxon, and specimens within the taxon from a given locality.
Date:
1995
Creator:
Whitmore, Frank C., Jr.; Madden, Cary T.; Schmidt, Dwight L. & Naqvi, Ibne Mohammed
System:
The UNT Digital Library
Geologic Controls of Deep Natural Gas Resources in the United States
A report about the natural gas drilling frontier in deep sedimentary basins. Papers presented here are intended to introduce the petroleum community to a set of geologic tools that may be used to predict deep undiscovered natural gas accumulations.
Date:
1997
Creator:
Dyman, T. S.; Rice, D. D. & Westcott, P. A.
System:
The UNT Digital Library