Browsing Dissertations & Theses by Title
Now showing items 35-54 of 201
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Climate Change of the South Polar Region in response to topographic and cryospheric forcings during the Paleocene-Eocene thermal maximum
(2019-05-03)The Paleocene-Eocene thermal maximum (PETM) occurred approximately 56 Ma and is marked by an estimated global temperature increase of 5 °C, a large negative carbon and oxygen excursion, and deep-sea carbonate dissolution. ... -
Climate Reconstruction Using Trace Element And Stable Isotope Signatures Preserved In An Early Late Pleistocene Stalagmite From Buckeye Creek Cave, Appalachian Mountains, Southern West Virginia, Usa
(Geology, 2012-04-11)An early-Late Pleistocene stalagmite was recovered from Buckeye Creek Cave (37°58.57'N, 80°23.98'W), southeastern West Virginia, USA. The growth axis of stalagmite BCC-025 was sampled for δ18O, δ13C, and Sr/Ca of the ... -
Community Ecology and Population Dynamics of the Nearshore Marine Fauna in the Middle Atlantic Bight (USA)
(2019-05-06)Natural resources are among the most valuable commodities on earth. Some natural resources (air, land, and water) are essential for human survival and many often constitute a large percentage of local, regional, and national ... -
Computer Models Of A Basement Involved Fault Propagation Fold During The Laramide Orogeny Around Las Vegas, New Mexico
Numerical geomechanical modeling is acceptable today for studying geologic structures and is readily accomplished by most computers used by geoscientists and engineers interested in studying geomechanics. Models should ... -
Constraining The Near Tip Stresses Around Propagating Earthquake Ruptures: Frictional Response And Off Fault Tensile Crack Development
The near-tip stress, strain, and displacement fields around propagating ruptures are complicated, transient, and depend heavily on the evolution of the shear traction along the advancing rupture. This shear traction evolution ... -
Constraining The Provenance Of Middle Cenozoic Fluvial Sandstone In The Central Rocky Mountains Using Detrital Zircon U-pb Geochronology And Sandstone Petrography
(Geology, 2014-09-17)Detrital zircon U-Pb geochronology and sandstone petrography are studied to constrain the provenance of middle Cenozoic fluvial sandstone in the Central Rocky Mountains. Petrographic point counting of 12 sandstone samples ... -
Controlling factors of river water stable isotope compositions and middle to late Cenozoic deposition and surface uplift history of the southern Rocky Mountains, U.S.A.
(2019-09-03)The Cenozoic topographic evolution of the Rocky Mountains (Rockies) and Great Plains in the western U.S.A. reflect a combination of mantle geodynamic, crustal deformation and surface erosional processes. This region was ... -
Correlation Of Sequence Stratigraphic Surfaces Of The Mid-cretaceous Dakota Group From Subsurface To Outcrop Southern Denver Basin, Colorado.
(Geology, 2011-10-11)The D and J sandstone of the Cretaceous Dakota Group are considered as the major oil and gas producing units within in the Denver Basin. The distribution of these units in the Denver Basin is a sub-basin of the Early ... -
Coupled Geochemical and Nano-Petrophysical Study of the Spraberry-Wolfcamp Trend; West Texas, U.S.A.
(2016-12-16)With the rise in interest of unconventional plays, efforts have moved to understand these formations across 12 orders of magnitude through nm-km scale. Recent work by others has shown the importance of the nanometer range ... -
Coupled Geochemical and Nano-Petrophysical Study of the Utica Play, Appalachian Basin, Ohio, U.S.A.
(2017-11-29)Being more extensive than the Marcellus Play, the Utica Play covers from New York state in the north to northeastern Kentucky and Tennessee in the south. The Utica Play is a stacked play consisting of organic-rich mudstones ... -
Depositional Environments, Diagenesis, And Reservoir Delineation Of The FCU 1947 Upper Clear Fork Cored Interval - An SEM Image Analysis Approach To Pore System Characterization
(Environmental & Earth Science, 2014-03-12)Delineating reservoir facies in heterogeneous tidal flat carbonates is a challenge which requires analysis at greater resolutions than wireline logs can provide. Such depositional environments are documented in the upper ... -
Depositional Facies And Reservoir Analysis Of The Tyler Formation In The Central Williston Basin, North Dakota
(Environmental & Earth Science, 2014-07-14)Traditionally, the Pennsylvanian Tyler Formation has been targeted as a conventional reservoir consisting of barrier island and channel sand deposits in the southwestern Williston basin, North Dakota. The purpose of this ... -
Development Of A Mathematical Model, VUMP (Vinasse Utilization For Methane Production)
(Environmental & Earth Science, 2013-07-22)Environmental pollution causes ongoing problems. Many countries are faced with the dilemma of finding alternative energy sources that are cost-effective and environmentally friendly. Biofuels have received much attention ... -
The Effect Of Freshwater Input On δ18o Distribution At The Younger Dryas
(Environmental & Earth Science, 2014-07-14)The Younger Dryas cooling event (~12.9-11.5 δ18O ka BP) is a recognized example of an abrupt decline of the Atlantic meridional overturning circulation and thus may serve as an analog for expected rapid future climate ... -
Effect Of Oil Viscosity Change On Oil Production: CO₂ Enhanced Oil Recovery In The Permian Basin And Potential In The Gabon Basin
With most oil fields around the world reaching maturation it is not uncommon for oil companies to investigate the possibility of implementing CO₂ Enhanced Oil Recovery. The injection of CO₂ in a reservoir reduces the oil ... -
Effects Of Climate Change And Perturbation In Biogeochemical Cycles On Oxygen Distribution And Ocean Acidification
(Environmental & Earth Science, 2014-12)Dissolved oxygen (DO) concentration in the ocean is an important component of the marine biogeochemical cycles. In this study a global oceanic carbon cycle model (HAMOCC 2.0) was used to address how oxygen minimum zones ... -
Enrichment of Volcanogenic Trace Elements in a Continuous Subsurface Eagle Ford Core in South Texas and the Origin of The Oceanic Anoxic Event II at The Cenomanian-Turonian (C/T) Boundary
(2017-12-13)The Upper Cretaceous Eagle Ford Shale of South Texas is a dark grey to black, sporadically laminated, organic rich carbonaceous mud rock located in the subsurface (~13,000), of the hydrocarbon producing shale-oil formation. ... -
Equatorial Pacific Export Production And Carbonate Accumulation Over The Middle Miocene Climate Transition
The Middle Miocene Climate Transition (MMCT) at ~13.8 million years ago (Ma) signifies the point when Earth made its final transition to the icehouse conditions of the Pleistocene. The MMCT is marked by the expansion of ... -
Experimental and theoretical studies of fluid-solid coupling processes of tight rock media
(2023-08-24)**Please note that the full text is embargoed until 8/1/2025** ABSTRACT: This study covers the application of continuum mechanics in the realm of rock work in geological studies. Continuum mechanics encompasses two major ... -
EXPERIMENTAL CONSTRAINTS ON THE MICROMECHANICS OF BRITTLE FRAGMENTATION DURING EARTHQUAKE RUPTURE
(2016-12-09)Various fault damage fabrics, from gouge in the principal slip zone, to fragmented and pulverized rocks in the fault damage zone, have been attributed to brittle deformation at high strain rates during earthquake rupture. ...