Browsing MS Theses - DO NOT EDIT by Title
Now showing items 123-142 of 144
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Selenium Speciation Along A Groundwater Flow Path In The Carrizo Aquifer, Southeastern Texas, USA
(Geology, 2007-08-23)Selenium concentration and speciation [Se (VI), Se (IV) and Se (-II)] was determined along a flow path in the Carrizo Sand aquifer (southeastern Texas). Groundwater sampling was carried out in March 2006, from ten wells ... -
SENSITIVITY OF OXYGEN MINIMUM ZONES DUE TO CARBON DIOXIDE RADIATIVE FORCING USING CESM 1.2
(2019-04-25)Anthropogenic-induced climate change is occurring at an unprecedented rapid rate, compared to the geologic past. In this study, CO2 stabilization scenarios (1x, 2x, and 4x preindustrial atmospheric pCO2 levels) utilizing ... -
Simulation Of Climate Across the Permian-Triassic Boundary with a Focus on Phytogeographical Data Analysis
(2018-12-06)The present study aims at reconstructing the paleoclimate across the Permian-Triassic Boundary (PTB, 251.9 ± 0.024 Ma) which encompasses one of the major mass extinction events of the Earth’s history. Results are analyzed ... -
Southern Illinois Paleoclimate Determined From Variations In Iron Oxide Content
(Geology, 2008-08-08)Diffuse reflectance spectroscopy was used to determine the relative abundance of the iron oxides hematite and goethite in a loess and paleosol sequence from an unglaciated area of southern Illinois. Factor analysis of ... -
⁸⁷Sr/⁸⁶Sr AS A POTENTIAL FINGERPRINT FOR DETERMINING THE PROVENANCE OF TOTAL DISSOLVED SOLIDS ASSOCIATED WITH HYDRAULIC FRACTURING ACTIVITIES IN THE BARNETT SHALE, TEXAS
(2016-05-11)Over the last decade there has been a dramatic increase in unconventional drilling that utilizes hydraulic fracturing to extract oil and gas. The Barnett Shale in north central Texas has been a significant contributor to ... -
Stable isotope composition of surface water across central Mexico
(2020-12-09)Understanding the controlling factors of modern surface water stable isotope compositions is important for reconstructions of paleoclimate and paleoelevation. Few studies have attempted to understand patterns of surface ... -
Statistical Analysis Of Rock Fabrics
(Geology, 2007-08-23)The main goal of the work is to present new procedures for statistical analysis of fabric data for structural geology. After an introduction to the problems of orientation analysis, discussion of different types of the ... -
The Subsidence Evolution Of The Fort Worth Basin In North Central Texas, U.S.A.
(Environmental & Earth Science, 2014-09-17)Although the Fort Worth Basin in north-central Texas has become a major shale-gas production system in recent years, its subsidence history and dynamic relationship to the Ouachita fold-and-thrust belt have not been well ... -
Surface Lineaments And Lithofacies Distribution Of The Tyler Formation In Southwestern North Dakota
(Geology, 2012-07-25)The purpose of this study is to investigate whether a correlation exists between surface lineaments and lithofacies distribution of the Pennsylvanian Tyler Formation in the southwest portion of North Dakota of the Williston ... -
A Tectonic Reconstruction Of Accreted Terranes Along The Paleo-Pacific Margin Of Gondwana
(Environmental & Earth Science, 2014-07-14)The southern oceanic margin of Gondwana was nearly 40,000 km long or 24,854.8 miles. The southern margin was the result of the Terra Australis orogen. Spanning 18,000 km or 11,184.7 miles and is proposed as one of the ... -
The Characterization of Friable Surface Deposits Across North Africa Utilizing Computer Controlled Scanning Electron Microscopy (CCSEM)
(2016-05-10)Analysis of the mineral constituents of friable surface deposits from the Burkina Faso and Niger regions, North Africa, was undertaken by computer controlled scanning electron microscopy (CCSEM) to try and identify ... -
THE MICROFOSSIL ASSOCIATION OF THE UPPER PART OF THE SALESVILLE FORMATION (LOWER MISSOURIAN, PENNSYLVANIAN) NEAR MINERAL WELLS, NORTH-CENTRAL TEXAS
(2021-05-09)The microfossil association of the Salesville Formation (Strawn Group, Missourian, Pennsylvanian) of small foraminifers, fusulinids, conodonts, ostracodes, holothurian sclerites, and rare radiolarians, has received very ... -
THE NORTH CENTRAL TEXAS URBAN HEAT ISLAND MAGNITUDE AND ITS RELATION TO SEVERE AND EXTREME DROUGHT
(2021-05-04)This study focuses on how summer droughts affect the urban heat island (UHI) in Dallas-Fort Worth (DFW). The nocturnal UHI has been computed by comparing downtown temperature observations to rural temperature measurements ... -
The Variance Of Methane Adsorption And Its Relation To Thermal Maturity In The Marcellus Shale
(Geology, 2015)In unconventional shale gas plays, gas-in-place is a major factor in evaluating the shale’s potential and determining well density and lateral placement. The two main contributors to total gas-in-place are free gas and ... -
Thermal Maturity And Porosity Development During Catagensis In The Barnett Shale, Fort Worth Basin, Texas
(Geology, 2012-04-11)Unconventional resource plays are typified by significantly recoverable volumes of thermally mature hydrocarbons (oil, condensate and/or gases) trapped within a low permeability shale formation acting as source, reservoir ... -
Timing, Provenance, And Paleoclimate Implications Of The Cenozoic Eolian Deposition In The Central Rocky Mountains, USA
(Geology, 2014-03-12)This study applies detrital zircon U-Pb geochronology and sandstone petrography to constrain the timing and provenance of Cenozoic eolian sandstone in the central Rocky Mountains. Four samples, collected at the transition ... -
Trends In Seasonal Climate Variance In The Subtropical Reservoir Joe Pool Lake, Texas: Implications Dissolved Oxygen And Nutrient Distribution
The primary causes of seasonal variance in temperature, hydrological cycle, and nutrient distribution of lakes, and the processes explaining these changes including climate change and land use changes have been investigated ... -
An updated GPS velocity field for Puerto Rico and the Virgin Islands: Constraints on tectonic setting and internal-deformation
(2014-09-17)Puerto Rico and the northern Virgin Islands define the eastern end of the Greater Antilles, while the Puerto Rico trench and the Muertos Trough define the northern and the southern limits of the North American - Caribbean ... -
An Updated GPS Velocity Field For Puerto Rico And Virgin Islands: Constraints On Tectonic Setting And Internal Deformation
(Geology, 2012-07-25)Puerto Rico and the northern Virgin Islands define the eastern end of the Greater Antilles, while the Puerto Rico trench and the Muertos Trough define the northern and the southern limits of the North American - Caribbean ... -
Verrucomicrobia: A Model Phylum To Study The Effects Of Deforestation On Microbial Diversity In Amazon Forest
(Environmental & Earth Science, 2011-03-03)The Amazon rainforest is known for having a very high diversity of plants and animals. However, it is one of the least understood ecosystems regarding microbial diversity. Microorganisms are important for the ecological ...