Technical Report Archive & Image Library (TRAIL) - 210 Matching Results

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Additional Physical Property Data, U12g.01 Tunnel, Nevada Test Site, Nye County, Nev.

Description: Introduction: "This report presents physical property analyses for 28 additional samples and is a supplement to Geological Survey Technical Letter: Area-12-1, which gave a brief summary of the geology, descriptive data on the tunnel, and X-ray, chemical, semiquantitative spectrographic analyses, and some physical properties determinations of samples collected in the U12g.01 tunnel."
Date: October 5, 1962
Creator: Emerick, W. L.; Snyder, R. F. & Hoover, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ancient Lavas in Shenandoah National Park Near Luray, Virginia

Description: Abstract: In the Blue Ridge Province of northern Virginia, Maryland, and southern Pennsylvania, Lower Cambrian beds are underlain by a thick sequence of greenstone and interbedded sedimentary rocks known as the Catoctin Formation. An area near Luray, Va., was studied to determine the thickness of the formation, its relationship to overlying and underlying rocks, and the original nature of the lavas from which the Catoctin greenstone was derived. There the Catoctin Formation lies unconformably … more
Date: 1969
Creator: Reed, John Calvin, Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Areal Geology of the Little Cone Quadrangle, Colorado

Description: From abstract: The Little Cone quadrangle includes an area of about 59 square miles in eastern San Miguel County in southwestern Colorado. The quadrangle contains features characteristic of both the Colorado Plateaus physiographic province and the San Juan Mountains, and it has been affected by geologic events and processes of two different geologic environments.
Date: 1960
Creator: Bush, Alfred Lerner; Marsh, Owen Thayer & Taylor, Richard B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Average Physical Properties of Tuff in the Vicinity of Ground Zero, U12g.01 Tunnel, Nevada Test Site, Nye County, Nevada

Description: This report presents the physical properties of tuff in the vicinity of the U12g.01 tunnel at the Nevada Test Site based off of two previous Technical Letters on the tunnel: Technical Letter: Area 12-1, and Technical Letter 12-1, Supplement 1.
Date: January 11, 1963
Creator: Emerick, W. L.; Snyder, R. P. & Hoover, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Bannock Thrust Zone Southeastern Idaho

Description: Abstract: The Bannock overthrust in southeastern Idaho and northcentral Utah was originally described by Richards and Mansfield (1912) as a single large thrust fault that formed at the close of the Laramide orogeny and was folded by renewed compression near the end of Pliocene time. Later Mansfield expanded and revised his interpretation of the Bannock overthrust so that at least the northern part of the overthrust was thought to be a thrust zone in which the individual faults originated in a f… more
Date: 1963
Creator: Armstrong, Frank C. & Cressman, Earle Rupert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Bentonite Deposits of the Northern Black Hills District Wyoming, Montana, and South Dakota

Description: From abstract: The northern Black Hills bentonite mining district includes parts of Crook County, Wyo., Carter County, Mont., and Butte County, S. Dak. Within this district, many beds of bentonite occur interspersed with sedimentary strata of Cretaceous age that have an average total thickness of about 3,000 feet and consist chiefly of marine shale, marl, and argillaceous sandstone. The bentonite beds occur in formations ranging upward from the Newcastle sandstone to the lower part of the Mitte… more
Date: 1962
Creator: Knechtel, Maxwell M. & Patterson, Sam H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Beryl-bearing Pegmatites in the Ruby Mountains and Other Areas in Nevada and Northwestern Arizona

Description: From abstract: Pegmatite occurs widely in Nevada and northwestern Arizona, but little mining has been done for such pegmatite minerals as mica, feldspar, beryl, and lepidolite. Reconnaissance for beryl-bearing pegmatite in Nevada and in part of Mohave County, Ariz., and detailed studies in the Dawley Canyon area, Elko County, Nev., have shown that beryl occurs in at least 11 districts in the region. Muscovite has been prospected or mined in the Ruby and Virgin Mountains, Nev., and in Mohave Cou… more
Date: 1960
Creator: Olson, Jerry C. & Hinrichs, E. Neal
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Borehole Gravity Meter Observations in Drill Hole Test Well-B, Yucca Flat, Nevada Test Site

Description: Abstract: "Fifteen in situ interval densities were calculated from the borehole gravity meter observations made in Test Well-B. The weighted average density for all the rocks sampled by the gravity meter is 1.83 gm/cc. The alluvium density ranges from 1.71 to 1.82 gm/cc and averages 1.76 gm/cc. The lake beds range from 1.91 to 1.93 gm/cc and average 1.92 gm/cc. The Rainier Mesa Member averages 1.83 gm/cc. The Tiva Canyon Member averages 1.74 gm/cc and the upper 110 feet of Topopah Spring Member… more
Date: October 6, 1967
Creator: Healey, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Borehole Gravity Meter Observations in Drill Hole UCe-18, Hot Creek Valley, Nye County, Nevada

Description: Abstract: "Drill hole UCe-18 was successfully logged with the U.S. Geological Survey-La Coste Romberg borehole gravity meter to a depth of 6,488 feet. That density increases with depth is apparent in both the alluvium and volcanic rock. The in situ density of the alluvium measured by the gravity meter ranges from 1.77 to 2.34 gm/cc; the lake beds beneath the alluvium have a density of 2.22 gm/cc; and the rhyolitic rocks range in density from 2.26 to 2.47 gm/cc. The average density determined fr… more
Date: October 2, 1967
Creator: Healey, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cenozoic Geology in the Mammoth Area Pinal County, Arizona

Description: From introduction: "The purpose of this report is to show how mapping of discrete units of the valley fill may lead to a broadened understanding of Cenozoic history of intermontane basins in Arizona. The area described is in the vicinity of Mammoth Arizona where deep dissection has exposed a complex sequence of terrestrial deposits and related rocks."
Date: 1963
Creator: Heindl, L. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Changes in Stratigraphic Nomenclature by the U.S. Geological Survey, 1963

Description: A report that fits in a series of reports that are about changes in stratigraphic nomenclature and that will list publications in which the changes have been describes. It deals with stratigraphy, including those defining changes in stratigraphic nomenclature in reports of the U.S. Geological Survey.
Date: 1965
Creator: Cohee, George V. & West, Walter S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chemistry and Movement of Ground Water, Nevada Test Site

Description: Introduction: The chemical character of ground water depends to a large degree upon the character of the rock formations through which the water moves. The composition of the water is the result of several solutional and decompositional processes.
Date: May 20, 1964
Creator: Schoff, Stuart L. & Moore, John E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chromite and Other Mineral Deposits in Serpentine Rocks of the Piedmont Upland, Maryland, Pennsylvania and Delaware

Description: From abstract: The Piedmont Upland in Maryland, Pennsylvania, and Delaware is about 160 miles long and at the most 50 miles wide. Rocks that underlie the province are the Baltimore gneiss of Precambrian age and quartzite, gneiss, schist, marble, phyllite, and greenstone, which make up the Glenarm series of early Paleozoic(?) age. These are intruded by granitic, gabbroic, and ultramafic igneous rocks. Most of the ultramafic rocks, originally peridotite, pyroxenite, and dunite, have been partly o… more
Date: 1960
Creator: Pearre, Nancy C. & Heyl, Allen V., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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