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Distinguishing Sedimentary Depositional Environments on Mars Using In-Situ Luminescence Measurements and Neural Network Analysis.

Description: Although not recognized as a true geologic period on Mars, the term 'Martian Quaternary' emerged at the 2001 LPSC. The phrase helps focus attention on the fact that Mars does indeed exhibit dynamic surface processes andd geomorphic features active on time scales less than 10{sup 6} years. As on earth evolving landscapes can serve as important storehouses for paltoclimatic and paIeoenvironmental records. However, deciphering the 'Quaternary' history of Mars will require the development of 4 new … more
Date: January 1, 2001
Creator: Lepper, K. E. (Kenneth E.) & Whitley, V. H. (Von H.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Soils of Walker Branch Watershed

Description: The soil survey of Walker Branch Watershed (WBW) utilized the most up-to-date knowledge of soils, geology, and geohydrology in building the soils data base needed to reinterpret past research and to begin new research in the watershed. The soils of WBW were also compared with soils mapped elsewhere along Chestnut Ridge on the Oak Ridge Reservation to (1) establish whether knowledge obtained elsewhere could be used within the watershed, (2) determine whether there were any soils restricted to th… more
Date: January 1, 1994
Creator: Lietzke, D. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Identification of geopressured occurrences outside of the Gulf Coast. Final report, Phase I

Description: As an extension of its efforts in the development of the geopressured resources of the Gulf Coast, the Division of Geothermal Energy of the US Department of Energy is interested in determining the extent and characteristics of geopressured occurrences in areas outside the Gulf Coast. The work undertaken involved a literature search of available information documenting such occurrences. Geopressured reservoirs have been reported from various types of sedimentary lithologies representing virtuall… more
Date: September 30, 1980
Creator: Strongin, O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Timber Mountain magmato-thermal event: An intense widespread culmination of magmatic and hydrothermal activity at the southwestern Nevada volcanic field

Description: Eruption of the Rainier Mesa and Ammonia Tanks Members Timber Mountain Tuff at about 11.5 and 11.3 Ma, respectively, resulted in formation of the timber Mountain (TM) caldera; new K-Ar ages show that volcanism within and around the TM caldera continued for about 1 m.y. after collapse. Some TM age magmatic activity took place west and southeast of the TM caldera in the Beatty -- Bullfrog Hills and Shoshone Mountain areas, suggesting that volcanic activity at the TM caldera was an intense express… more
Date: May 1, 1988
Creator: Jackson, M.R. Jr.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Summary of climatic input for waste management site suitability criteria and state of progress

Description: Because groundwater movement can have important effects on buried nuclear wastes, hydrologists need to know if future climatic changes will influence the accuracy of groundwater flow calculations. Groundwater recharge (and therefore groundwater flow) depends on surface water balance. (Surface water balance equals precipitation less losses to evaporation, runoff, and storage.) To develop input data for modeling future climatic effects, we have made the following simplifying assumptions: (1) Clim… more
Date: May 3, 1978
Creator: Potter, G.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geologic and geophysical investigations of Climax stock intrusive, Nevada

Description: This document contains three parts of a survey of Climax stock intrusive, Nevada by the US Geological Survey. The first contains the results of a conventional survey of the site and an investigation of rock composition. The second contains the results of a gravity survey and the third contains the results of a magnetic aerial survey. Each of the three documents contains a separate abstract.
Date: December 31, 1983
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Global Temperature Patterns 6000 Years Ago. Progress Report

Description: Climatic patterns of the mid-Holocene (5000 to 7000 years B.P.) may be helpful in predicting some of the climatic changes during future climatic periods that are warmer than today. Research progress is reported on work done during the year to assemble data from pollen, marine plankton, and lake-levels required for producing northern hemisphere climatic maps for the mid-Holocene. (ACR)
Date: November 1, 1980
Creator: Webb, T., III
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Lathrop Wells volcanic center: Status of field and geochronology studies

Description: The purpose of this paper is to describe the status of field and geochronology studies of the Lathrop Wells volcanic center. Our perspective is that it is critical to assess all possible methods for obtaining cross-checking data to resolve chronology and field problems. It is equally important to consider application of the range of chronology methods available in Quaternary geologic research. Such an approach seeks to increase the confidence in data interpretations through obtaining convergenc… more
Date: March 1, 1992
Creator: Crowe, B.; Morley, R.; Wells, S.; Geissman, J.; McDonald, E.; McFadden, L. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Deep crustal sediment study: Widespread Precambrian layered rocks (Sedimentary) beneath the US midcontinent

Description: A thick sequence of layered rocks occurs beneath the Phanerozoic platform strata which blanket the US midcontinent. Observed on COCORP deep reflection data in southern Illinois and Indiana and in SW Oklahoma and adjacent Texas, this sequence is locally 1--3 times as thick as the overlying Paleozoic cover, but the origin of this sequence, its ultimate lateral extent, and resource potential are unknown. The objective of this project is to seek and reprocess seismic reflection data provided by ind… more
Date: January 1, 1992
Creator: Hauser, E. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Quaternary investigation

Description: The primary purpose of the Quaternary investigation is to provide information on the location and age of Quaternary deposits for use in evaluating the presence or absence of neotectonic deformation or paleoliquefaction features within the Savannah River Site (SRS) region. The investigation will provide a basis for evaluating the potential for capable faults and associated deformation in the SRS vicinity. Particular attention will be paid to the Pen Branch fault.
Date: May 15, 1991
Creator: Stieve, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reduction of photosynthetically active radiation under extreme stratospheric-aerosol loads

Description: The recently published hypothesis that the Cretaceous-Tertiary extinctions might be caused by an obstruction of sunlight is tested by model calculations. First we compute the total mass of stratospheric aerosols under normal atmospheric conditions for four different (measured) aerosol size distributions and vertical profiles. For comparison, the stratospheric dust masses after four volcanic eruptions are also evaluated. Detailed solar radiative transfer calculations are then performed for artif… more
Date: January 1, 1981
Creator: Gerstl, S.A.W. & Zardecki, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Oil Shale Commercialization Study

Description: Ninety four possible oil shale sections in southern Idaho were located and chemically analyzed. Sixty-two of these shales show good promise of possible oil and probable gas potential. Sixty of the potential oil and gas shales represent the Succor Creek Formation of Miocene age in southwestern Idaho. Two of the shales represent Cretaceous formations in eastern Idaho, which should be further investigated to determine their realistic value and areal extent. Samples of the older Mesozonic and paleo… more
Date: September 1, 1981
Creator: Warner, M. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Lathrop Wells volcanic center: Status of field and geochronology studies

Description: The Lathrop Wells volcanic center is located 20 km south of the potential Yucca Mountain site, at the south end of the Yucca Mountain range. It has long been recognized as the youngest basalt center in the region. However, determination of the age and eruptive history of the center has proven problematic. The purpose of this paper is to describe the status of field and geochronology studies of the Lathrop Wells center. Our perspective is that it is critical to assess all possible methods for ob… more
Date: March 1, 1993
Creator: Crowe, B.; Morley, R.; Wells, S.; Geissman, J.; McDonald, E.; McFadden, L. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Glacial geology of the West Tensleep Drainage Basin, Bighorn Mountains, Wyoming

Description: The glacial deposits of the West Tensleep Basin in the Bighorn Mountains of Wyoming are mapped and a relative chromology established. The deposits are correlated with the regional model as defined in the Wind River Mountains. A statistical analysis is performed on the density and weathering characteristics of the surficial boulders to determine their validity as indicators of relative age. (ACR)
Date: August 1, 1980
Creator: Burggraf, G.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preliminary study of favorability for uranium of the Sangre de Cristo Formation in the Las Vegas basin, northeastern New Mexico

Description: Uranium favorability of the Sangre de Cristo Formation (Pennsylvanian-Permian) in the Las Vegas basin has been evaluated. The Las Vegas basin project area, located in Colfax, Mora, and San Miguel Counties, New Mexico, comprises about 3,489 sq mi. The formation contains sedimentologic and stratigraphic characteristics that are considered favorable for uranium deposition. Field investigations consisted of section measuring, rock sampling, and ground radiometric reconnaissance. North-south and eas… more
Date: December 1, 1977
Creator: May, R. T.; Strand, J. R.; Reid, B. E. & Phillips, W. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Lithologic interpretation of the De Braga No. 2 and Richard Weishaupt No. 1 geothermal wells, Stillwater project, Churchill County, Nevada

Description: Lithologies penetrated throughout the upper 732 to 838 m (2400 to 2750 ft) within the Stillwater prospect area are terrigenous sediments of Pleistocene to Recent age. A sill of dacite to andesite composition with a thickness variable between 122 to 208 m (400 to 680 ft) is present below the terrigenous sediments. Between the base of the sill and the top of the Bunejug Formation are intercalated volcanic and sedimentary rocks. All formations overlying the Bunejug Formation are probably of Pleist… more
Date: February 1, 1982
Creator: Sibbett, B. S. & Blackett, R. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Generalized structure map of top, middle, and basal tertiary markers with geothermal gradients, eastern north slope petroleum province, Alaska

Description: This map shows structure contours on several markers in the Tertiary rocks in the Prudhoe Bay area and the regional geothermal gradients. Contours of the geothermal gradient (Am. Assoc. Petroleum Geologists, undated) apparently correlate with other geologic trends. The lower gradients coincide with the deepest part of the Colville basin, and the higher gradients with the thinner section of sediments deposited over the Barrow arch. The inflection of the isograds in the vicinity of Prudhoe Bay ma… more
Date: January 1, 1978
Creator: Tailleur, I.L. & Engwicht, S.E. (comps.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of Cameron Parish geopressured aquifer. Final report

Description: The Sweet Lake geopressured-geothermal prospect is located in northern Cameron Parish, Louisiana in T.12 S., R. 7 W. and T. 12 S., R. 8 W. approximately 10 to 15 miles south of Lake Charles. The region is characterized by Cenozoic sand and clay deposits of geosynclinal thickness and differentially uplifted salt structures. The primary geopressured-geothermal aquifer is the Miogyp sand of the Camerina zone (Upper Frio formation of Oligocene-Miocene age). The main prospect is located in a basin o… more
Date: September 1, 1978
Creator: Durham, C.O. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Uinta Arch Project: investigations of uranium potential in Precambrian X and older metasedimentary rocks in the Unita and Wasatch ranges, Utah and Colorado

Description: This study is part of the United States Department of Energy's National Uranium Resource Evaluation Program to understand the geologic setting, amount, and availability of uranium resources within the boundaries of the United States. The systematic study of Precambrian quartz-pebble conglomerates and areas that may contain such conglomerates is an integral part of DOE's resource evaluation program, because deposits of world-wide importance occur in such terrains in Canada and South Africa, and … more
Date: June 1, 1980
Creator: Graff, P. J.; Sears, J. W. & Holden, G. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Research on the physical properties of geothermal reservoir rock. Annual report, September 1, 1977

Description: Measurements have been made of the electrical resistivity, the acoustic wave speed, density, and water content of six groups of rock samples taken from Cenozoic volcanic units. It has been found from these measurements that the correlations between physical properties are significantly different in the case of volcanic rocks than in the case of sandstones and limestones. For a given porosity and water content, the resistivity of a volcanic rock is several fold greater than that of a sandstone o… more
Date: September 25, 1977
Creator: Keller, G.V.; Grose, L.T. & Pickett, G.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preliminary study of the uranium potential of Tertiary rocks in the central San Juan Basin, New Mexico

Description: Three formations in the Tertiary of the San Juan Basin were investigated for their uranium favorability. They are the Ojo Alamo Sandstone, the Nacimiento Formation, and the San Jose Formation. The study comprised a literature survey and a basin analysis, which consisted of subsurface lithofacies, stratigraphic, and radiometric mapping. Field work in preparation for the subsurface analysis consisted of examination of outcrop and measured sections, surface radiometric traverses, and checking of r… more
Date: December 1, 1977
Creator: Vizcaino, H.P. & O'Neill, A.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of the structural parameters that influence gas production from the Devonian shale. Volume 1. Executive Summary and Task Reports. Annual progress report

Description: The first portion of the report, from the Executive Summary (page 1) through the Schedule of Milestones (page 10), gives a general overview which highlights our progress and problems for the second year. The Task report portion of the text, written by individual task investigators, is designed primarily for scientists interested in technical details of the second year's work. The second portion of the report consists of appendices of data compiled by the principal investigators.
Date: October 1, 1978
Creator: Shumaker, R.C.; de Wys, J.N. & Dixon, J.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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