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- Digitized Theses (7)
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- Texas Cave Management Association (2)
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- Journal of Book of Mormon Studies (1)
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- Technical Reports (1)
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Articles 1 - 30 of 30
Full-Text Articles in Entire DC Network
The Geology Of The Tuff Of Bridge Spring: Southern Nevada And Northwestern Arizona, Shirley Ann Morikawa
The Geology Of The Tuff Of Bridge Spring: Southern Nevada And Northwestern Arizona, Shirley Ann Morikawa
UNLV Theses, Dissertations, Professional Papers, and Capstones
The Tuff of Bridge Spring (TBS) is a regionally-widespread, andesite to rhyolite (59.50 to 74.91 wt. %) ash-flow tuff of mid-Miocene age (ca. 15.2 Ma) that is exposed in the northern Colorado River extensional corridor of southern Nevada and northwestern Arizona. Determination of the areal distribution, geochronology, lithology, geochemistry, and internal stratigraphy of the TBS is important for its establishment as a reliable stratigraphic reference horizon for tectonic reconstructions of the extensional corridor during the middle Miocene. Based on reoccurring patterns of major and trace element variation, the TBS is divided into constant Cr/variable SiO2 and variable Cr/variable SiO …
Tcma Activities Newsletter, Texas Cave Management Association (Tcma)
Tcma Activities Newsletter, Texas Cave Management Association (Tcma)
Texas Cave Management Association
No abstract provided.
An Integrated Surface Seismic/Seismic Profile Case Study: Simonette Area, Alberta, Ronald C. Hinds, Neil Lennart Anderson, Richard Kuzmiski
An Integrated Surface Seismic/Seismic Profile Case Study: Simonette Area, Alberta, Ronald C. Hinds, Neil Lennart Anderson, Richard Kuzmiski
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
On the basis of conventional surface seismic data, the 13-15-63-25W5M exploratory well was drilled into a low-relief Leduc Formation reef (Devonian Wood-bend Group) in the Simonette area, west-central Alberta, Canada. The well was expected to intersect the crest of the reef and encounter about 50-60 m of pay; unfortunately it was drilled into a flank position and abandoned. The decision to abandon the well, as opposed to whipstocking in the direction of the reef crest, was made after the acquisition and interpretive processing of both near-and far-offset (252 and 524 m, respectively) vertical seismic profile (VSP) data, and after the …
Capital Caver, No. 2, October 1993, William H. Russell
Capital Caver, No. 2, October 1993, William H. Russell
KIP Articles
Contents: TCMA-Austin Report -- An Oztotol Odyssey -- Hideout Cave -- The Caver from Muldoon -- Buttercup Creek Cave Trip -- Arkansas Caves -- Austin News
An Overview Of Some Of The Large Scale Mechanisms Of Salt Dissolution In Western Canada, Neil Lennart Anderson, Ralph W. Knapp
An Overview Of Some Of The Large Scale Mechanisms Of Salt Dissolution In Western Canada, Neil Lennart Anderson, Ralph W. Knapp
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Well log and seismic data indicate that the bedded rock salts of the Devonian Prairie Formation were widely distributed and uniformly deposited in the Lloydminster area, Western Canada; however, as a result of extensive leaching, the distribution of these salts is not now what it once was. The Lloydminster area is now bisected by the north-south trending main dissolutional edge of the Prairie salt. Thick salt (up to 150 m) is preserved to the west of this edge; to the east the salt is mostly absent. The paper presents an overview of the envisioned principal mechanisms of salt dissolution. The …
Capital Caver, No. 1, August 1993, Texas Cave Management Association. Austin Committee
Capital Caver, No. 1, August 1993, Texas Cave Management Association. Austin Committee
KIP Articles
Contents: The Case of the Bashful Boa -- TCMA Austin Committee Report -- Bat Well Cave
Geology, Geologic Time And Nebraska, Marvin P. Carlson
Geology, Geologic Time And Nebraska, Marvin P. Carlson
Conservation and Survey Division
No abstract provided.
Tcma Activities Newsletter, Texas Cave Management Association (Tcma)
Tcma Activities Newsletter, Texas Cave Management Association (Tcma)
Texas Cave Management Association
No abstract provided.
Prediction And Management Of Sediments Load And Phosporus In The Beaver Reservoir Watershed Using A Geographic Information System, J. M. Mckimmey, H. D. Scott
Prediction And Management Of Sediments Load And Phosporus In The Beaver Reservoir Watershed Using A Geographic Information System, J. M. Mckimmey, H. D. Scott
Technical Reports
A study was conducted to compile a GIS database for the Beaver Reservoir Watershed and then use the database to run the Universal Soil Loss Equation and the Phosphorus Index Model on the War Eagle Creek Watershed, a portion of the Beaver Reservoir Watershed database. Characterization of the spat i a 1 properties of the primary attributes compiled for the watershed were reported. In addition, water quality samples taken from War Eagle Creek were analyzed for relationships across the watershed. Erosion in the watershed was lower than expected with well vegetated and fertilized pastures contributing to the reduction of annual …
Theoretical And Applied Karstology, Volume 6, June 1993, Dan Dancău
Theoretical And Applied Karstology, Volume 6, June 1993, Dan Dancău
KIP Articles
Contents: Le bilan topoclimatique de Ia Grotte de Closani (Monts Mehedinti, Roumanie) -- Las Brujas Cave (Malargue, Argentina): An example of the oil pools control on the speleogenesis -- Accolements reguliers des cristaux de calcite due milieu speleal -- Regular rhombohedric calcite crystals intergrowths in the cave "Pestera Cristalelor din Valea Rea" (Rodnei Mountains, Romania) -- Mineralogy of moonmilk formation in Romanian and Norweigan caves -- Depositional processes in active caves of the Sureanu Mountains (the Southern Carpathians, Romania) -- Sedimentological studies in Racovita Gallery - Topolnita Cave (Mehedinti Plateau, Romania). An evolutive interpretation -- Karst phenomena in the Plain …
An Hypothesis Concerning The Three Days Of Darkness Among The Nephites, Russell H. Ball
An Hypothesis Concerning The Three Days Of Darkness Among The Nephites, Russell H. Ball
Journal of Book of Mormon Studies
Aspects of the three days of darkness following the three-hour period of intense destruction described principally in 3 Nephi include: (1) the strange absence of rain among the destructive mechanisms described; (2) the source of the intense lightning, which seems to be unaccompanied by rain; (3) a mechanism to account for the inundation of the cities of Onihah, Mocum, and Jerusalem, which were not among the cities which “sunk in the depths of the sea”; and (4) the absence in the histories of contemporary European and Asiatic civilizations of corresponding events, which are repeatedly characterized in 3 Nephi as affecting …
Identifying Key Variables Associated With The Temporal And Spatial Distribution Of Prolific Marine Petroleum Source Rock (Mpsr) Units And Its Application To The Taconic Foreland Basin, Eastern New York, C. Mark Achong
Geology Theses and Dissertations
Correctly identifying key variables associated with the temporal and spatial distribution of prolific marine petroleum source rock (MPSR) units is of critical importance towards the future development of models accurately predicting their existence and effective exploitation. The geographic positioning and prevailing paleoclimatic conditions on paleocontinental reconstructions, in combination with the processes controlling the drowning of continental margins and parameters associated with the establishment of high biologic productivity and long term anoxic conditions within the water column, have been pursued as first-order constraints controlling the development of some prolific marine petroleum source rock (MPSR) deposits. From this, a model has been …
Using Fourier Transform Analysis To Extract Information From The Shapes Of Folded Layers, Thomas Billiard
Using Fourier Transform Analysis To Extract Information From The Shapes Of Folded Layers, Thomas Billiard
Honors Papers
Objective methods of fold shape analysis are nessesary to better understand the behavior of folds and the folding process. I examined two methods of analysis, and used a method based on the Fourier Transform to show that the method based on the Fourier Series was insufficient for identifying shape characteristics of aperiodic natural fold trains. I also showed that the Fourier Transform method accessed information that was inaccessable using the Fourier Series method.
The Buttercup Creek Karst, Travis And Williamson Counties, Texas: Geology, Biology And Land Develpment, William Hart Russell
The Buttercup Creek Karst, Travis And Williamson Counties, Texas: Geology, Biology And Land Develpment, William Hart Russell
KIP Data Sets and Technical Reports
"Recent explorations in the Buttercup Creek Karst, west of Cedar Park have yielded several large caves inhabited by a unique assemblage of animals, both vertebrate and invertebrate. This report summarizes the geological and biological information on this area and recommends a strategy to protect the caves and their inhabitants as development proceeds in the Cedar Park area. This study also evaluates the hydrologic contribution to the cave system of each local area to determine the degree of protection necessary." -- Author Open Access See Extended description for more information.
Пещеры Итоги Исследований, G. V. Beltyukov, K. A. Gorbunova
Пещеры Итоги Исследований, G. V. Beltyukov, K. A. Gorbunova
KIP Articles
No abstract provided.
The Contribution To The History Of The Speleological Explorations Of The West Indies - At 500-Anniversary Of The Discovery Of America, Andrej Kranjc
The Contribution To The History Of The Speleological Explorations Of The West Indies - At 500-Anniversary Of The Discovery Of America, Andrej Kranjc
KIP Articles
Includes various articles about the history of cave studies in the West Indies.
Stratigraphy, Diagenesis, And Petroleum Geology Of The Smackover Formation, Southwest Alabama., William James Wade
Stratigraphy, Diagenesis, And Petroleum Geology Of The Smackover Formation, Southwest Alabama., William James Wade
LSU Historical Dissertations and Theses
The sequence stratigraphic framework of the Smackover Formation and other Jurassic strata in southwest Alabama is delineated, with the objective of eventual correlation of equivalent sequences across the northern Gulf. Additionally, geologic controls on the diagenesis of organic matter in the Smackover Formation are examined, in order to better understand organic-inorganic interaction and hydrocarbon evolution during burial. Jurassic systems tracts of southwest Alabama differ significantly from those of the north central Gulf in that they show profound influence of antecedent topography, consequent large continental clastic influx, and a subsidence history less influenced by thermal cooling. Norphlet siliciclastics constitute a continental …
Tectonic Implications Of Fission-Track Thermochronology And Amphibole Thermobarometry Studies Of The Northern Peninsular Ranges Batholith, Southern California., Peter Gillham George
Tectonic Implications Of Fission-Track Thermochronology And Amphibole Thermobarometry Studies Of The Northern Peninsular Ranges Batholith, Southern California., Peter Gillham George
LSU Historical Dissertations and Theses
Fission-track data from the San Jacinto Mountains and the Palomar Mountain-Escondido study area indicate that the Late Cretaceous history of the Peninsular Ranges batholith is marked by a series of major cooling events. Coupled with geobarometry measurements and field observations, these data allow for a greater understanding of the nature and timing of both local and regional tectonic events. In the eastern Peninsular Ranges, west-vergent thrusting along the Santa Rosa mylonite belt at $\sim$99-94 Ma was followed by major extensional faulting between $\sim$94 and 92 Ma. Amphibole geobarometry of mylonites indicate that $\sim$10-18 km of crustal thickening occurred as a …
Geologic And Physical Processes At A Gulf Of Mexico Tidal Inlet, East Pass, Florida., Andrew Morang
Geologic And Physical Processes At A Gulf Of Mexico Tidal Inlet, East Pass, Florida., Andrew Morang
LSU Historical Dissertations and Theses
East Pass, a tidal inlet located in the Florida Panhandle between Pensacola and Panama City, connects Choctawhatchee Bay to the Gulf of Mexico. A three-phase model has been developed which describes the behavior of East Pass inlet during the last 120 years, based on wave, current, tide, bathymetric and shoreline data, and on historical records. The first phase (pre-1928) is of spit development and breaching. This phase covers the period when the pass was oriented in a northwest-southeast direction between Choctawhatchee Bay and the Gulf. From 1928 to 1968, the second phase was characterized by a stable throat position but …
Origin Of A Coarse-Grained Shallow Marine Sandstone Complex: The Coniacian Tocito Sandstone, Northwestern New Mexico. (Volumes 1 And 2)., Gregory Wayne Riley
Origin Of A Coarse-Grained Shallow Marine Sandstone Complex: The Coniacian Tocito Sandstone, Northwestern New Mexico. (Volumes 1 And 2)., Gregory Wayne Riley
LSU Historical Dissertations and Theses
Study of the Coniacian Tocito Sandstone, one of the shale-encased, shallow marine sandstone complexes in the Cretaceous Western Interior Basin, indicates that transport of coarse sediment to distal marine locations was accomplished by an increase in the efficiency of the marine dispersal system (tidal currents). Enhanced tidal currents were a consequence of bathymetric variations formed by uplifts along the pre-existing Four Corners Lineament system. The Tocito Sandstone forms an entirely marine, progradational-transgressive sequence and overlies an unconformity localized along uplifted submarine highs. The lower progradational strata represent the marine portion of a tide-dominated delta that prograded into a tectonically-created "embayment", …
Geochemistry And Mineralogy Of The Igarape Bahia Lateritic Gold Deposit, Carajas, Brazil, Weisheng Zang
Geochemistry And Mineralogy Of The Igarape Bahia Lateritic Gold Deposit, Carajas, Brazil, Weisheng Zang
Digitized Theses
One of the most fascinating problems in economic geology is to understand the behaviour of surface ore deposits under conditions of intense tropical weathering. The Igarape Bahia lateritic gold deposit in the Carajas region of the Amazon has developed on a primary Cu(Au) mineralization zone hosted by chlorite schists which are hydrothermally altered basalts, pyroclastic and clastic sedimentary rocks in an Archean rift basin. From country rock towards the mineralization zone, both Fe/(Mg + Fe) ratio in chlorite and Ca/Na ratio in inclusion fluids increase, suggesting that the primary Cu(Au) mineralization was formed from the convection of high salinity fluids. …
Geology And Mineral Resources Of Boone, Greeley, Nance, And Wheeler Counties, Nebraska, Raymond R. Burchett
Geology And Mineral Resources Of Boone, Greeley, Nance, And Wheeler Counties, Nebraska, Raymond R. Burchett
Conservation and Survey Division
No abstract provided.
Magmatism, Deformation And Mesothermal Metasomatism: Interpretation Of Aluminosilicate Mineral Assemblages In The Cargo Muchacho Mountains, Southeastern California, Eric Olinder Owens
Magmatism, Deformation And Mesothermal Metasomatism: Interpretation Of Aluminosilicate Mineral Assemblages In The Cargo Muchacho Mountains, Southeastern California, Eric Olinder Owens
Digitized Theses
Aluminosilicate mineral assemblages, with more than 30% Al{dollar}\sb2{dollar}O{dollar}\sb3{dollar} and less than 2% CaO+Na{dollar}\sb2{dollar}O+K{dollar}\sb2{dollar}O, occur on the western flank of the Cargo Muchacho Mountains, southeastern California. The aluminosilicate mineral assemblages are shallow-dipping tabular zones locally more than 100 m in total thickness. From bottom to top, they are: (a) the Feldspar Zone, with quartz-oligoclase-K-feldspar-biotite-epidote-magnetite, (b) the Muscovite Zone, with quartz-muscovite-biotite-magnetite-tourmaline-apatite, and (c) the Kyanite Zone, with quartz-kyanite-muscovite-magnetite-rutile-tourmaline-apatite (with or without andalusite, pyrophyllite, staurolite, lazulite, and specularite) occur in the Kyanite Zone.;The host rocks are find grained quartzofeldspathic gneiss of the Tumco Formation, and Jurassic intrusive rocks. The latter are 173 Ma …
Sheetflood Sedimentology And Stratigraphy Of The Middle Proterozoic Revett Formation Scotchman Peak Proposed Wilderness Area Montana, Andrew A. Young
Sheetflood Sedimentology And Stratigraphy Of The Middle Proterozoic Revett Formation Scotchman Peak Proposed Wilderness Area Montana, Andrew A. Young
Graduate Student Theses, Dissertations, & Professional Papers
No abstract provided.
Iron Ores Of The Pre-Penokean, Superior-Type Riverton Iron Formation, Michigan: Keweenawan Supergene Oxidation, Iron Enrichment, And Paucity Of Other Metals, Jon William North
Iron Ores Of The Pre-Penokean, Superior-Type Riverton Iron Formation, Michigan: Keweenawan Supergene Oxidation, Iron Enrichment, And Paucity Of Other Metals, Jon William North
Digitized Theses
The Riverton Iron Formation is chert-siderite facies of Proterozoic Superior-Type Iron Formation within the Paint River Group, Marquette Range Supergroup, of the Upper Penninsula, Michigan. It is 90 to 250 m thick, underlain by the 150 to 450 m thick Dunn Creek Slate Formation, and overlain successively by the 15 to 150 m thick Hiawatha Greywacke Formation, the 30 to 60 m thick Stambaugh Formation of siderite-and magnetite-bearing slate, and the 1200 m thick Fortune Lakes Slate Formation. The Dunn, Hiawatha, Stambaugh, and Fortune Formations are variably pyritic and sideritic shale, chert, siltstone, and greywacke. The Paint River Group is …
Lateral And Vertical Zonation Of Clay Minerals And Associated Alteration Products At The Hog Heaven Mine And Ole Hill Deposit Hog Heaven Mining District Flathead County Montana, Wayne Eric Jepson
Graduate Student Theses, Dissertations, & Professional Papers
No abstract provided.
Late Wisconsinan And Holocene Sedimentation Of Silverhope Valley, British Columbia, James Rodney Goff
Late Wisconsinan And Holocene Sedimentation Of Silverhope Valley, British Columbia, James Rodney Goff
Digitized Theses
Sixty-eight bedrock and sediment exposures, six lake bottom cores, and twenty-six bulk samples of river gravels were studied by various stratigraphic methods including: radiocarbon and caesium dating, tephrochronology and lithofacies analysis to interpret late Wisconsinan and Holocene deposits in the Silverhope Creek drainage basin.;Late Wisconsinan evidence suggests that during the downwasting and retreat of the Cordilleran Ice Sheet between approximately 11 500 and 11 000 years BP, there was one minor readvance and two smaller standstill/oscillations. During deglaciation a dead ice-dammed lake formed in front of the retreating ice mass. Partial lake drainage occurred initially by catastrophic flooding through dead …
Computer-Assisted Petrographic Image Analysis And Quantization Of Rock Texture, Abani Kanta Samantaray
Computer-Assisted Petrographic Image Analysis And Quantization Of Rock Texture, Abani Kanta Samantaray
Digitized Theses
Under the petrographic microscope, most rocks in thin section appear as an assemblage of tightly interlocked mineral grains, inclusions, port spaces etc. The geometrical characteristics of these features, including their apparent sizes, shapes, orientations and distributions, define the texture of a rock.;In this study the optical image from a petrographic microscope is processed by a micro-computer. The image is converted into electrical signals by a Sony AVC-D5 monochrome video camera. These signals are digitized by an analog to digital converter in an Imaging Technology PCVISION plus frame grabber board which stores and manipulates the resulting digital image in its frame …
Precious-Metal Mineralization And Sulfide-Silicate Relationships In Some Canadian Nickel-Copper Sulfide Deposits: Thompson Mine, Manitoba; Sudbury, Ontario; Dundonald Beach, Ontario, Yuan Chen
Digitized Theses
Platinum-group minerals (PGMs) and native gold are reported in association with gersdorffite and nickeline from the Thompson mine, Thompson Nickel Belt, Manitoba. Four PGM-gold bearing ore types are distinguished on the basis of mineral assemblages and host rocks: (I) irarsite in massive Ni sulfide ore hosted by metapelite; (II) gold, sudburyite, testibiopalladite-antimonian michenerite, unnamed PGM, and merenskyite in As-rich Ni sulfide ore hosted by metapelite from the T-1 mine; (III) gold with tellurides in As-rich Ni sulfide ore hosted by metapelite from the open pit; and (IV) gold, majakite, kotulskite, merenskyite, and michenerite in As-rich Ni sulfide ore hosted by …
Stratigraphy And Geochemistry Of Neoproterozoic Iron Formation, South Australia, Kathryn Louise Neale
Stratigraphy And Geochemistry Of Neoproterozoic Iron Formation, South Australia, Kathryn Louise Neale
Digitized Theses
In the southern portion of the Adelaide geosyncline, the Neoproterozoic Yudnamutana Subgroup unconformably overlies older Neoproterozoic sedimentary rocks of the Adelaidean succession. The Braemar and Holowilena iron formations occur locally in the glacigenic Yudnamutana Subgroup at the transitional contact between the basal Pualco Tillite and overlying Benda Siltstone formations, or stratigraphic equivalents elsewhere.;Magnetite and/or hematite and absence of chert typify these iron formations which are associated with diamictite, subarkosic wacke, siltstone and minor carbonate. Diamictites are typically unstratified and have iron-poor ({dollar}{dollar}30 wt.% Fe{dollar}\sb2{dollar}O{dollar}\sb3{dollar}) matrices. The former commonly occur below the iron formation-bearing intervals whereas the latter are intercalated with …