Browsing Department of Earth and Environmental Sciences by Title
Now showing items 100-119 of 201
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Machine Learning-based Methods for the Segmentation of Scanning Electron Microscopy Images of Fine-Grained Shale Samples
(2022-12-15)The segmentation of scanning electron microscopy (SEM) images is critical yet time-consuming for geological studies, as it will need to differentiate the boundaries for different mineral objects to facilitate subsequent ... -
MAGNESIUM ISOTOPE INVESTIGATION OF STROMATOLITIC KNOBS IN STORR’S LAKE, SAN SALVADOR, BAHAMAS: IMPLICATIONS FOR ORGANOMINERALIZATION AND LAMINAE FORMATION
(2017-08-21)Storr’s Lake, a hypersaline lake located on San Salvador Island, Bahamas, contains modern, fine-grained stromatolites. This study focused on two morphological types of stromatolitic mounds in Storr’s Lake (pinnacle mound ... -
Major, Minor And Trace Element Geochemistry Of The Eagle Ford Formation, South Texas
Major, minor and trace element concentrations analyzed through hand-held ED-XRF and several laboratory techniques characterize geochemical heterogeneity in strata that appear homogeneous within the Eagle Ford Formation. ... -
Mapping Structural Deformation Associated with the Formation of the Blue Ridge Salt Dome
(2017-12-11)Geologic mapping and subsurface imaging around salt has remained difficult. Seismic imaging is difficult near salt due to the large velocity contrasts between salt and the surrounding rocks, the steeply dipping salt and ... -
Microfacies Analysis Of The Jacksboro Limestone Member (Graham Formation, Virgilian, Pennsylvanian) In Jack County, Texas
(Geology, 2011-07-14)The Jacksboro Limestone is a member of the Graham Formation of the Virgilian (Upper Pennsylvanian) and is exposed only in and around the city of Jacksboro in central Jack County, Texas. The purposes of this investigation ... -
Microfaunal Assemblages Of The Placid Shale (Missourian, Upper Pennsylvanian), Brazos River Valley, North-Central Texas
(Geology, 2012-07-25)The Pennsylvanian and lowermost part of the Permian strata in North-Central Texas is assigned to the Strawn, Canyon, and Cisco Groups. The Canyon Group is approximately equivalent to the middle-upper part of the Missourian ... -
Middle Permian (Late Guadalupian) back-reef carbonate of Panther Canyon, Apache Mountains, Trans-Pecos Texas
(2018-06-22)In the Apache Mountains of West Texas, Middle Permian (Guadalupian) strata a portion of the Delaware Basin part of the Capitan Reef is well exposed in many canyons that cut through the northern escarpment in the eastern ... -
A Model Of Short Term Surface Deformation Of Soufriere Hills Volcano, Montserrat Constrained By GPS Geodesy
(Geology, 2013-10-22)Geodetic surveying is a core volcano monitoring technique. Measurements of how the crust deforms can give valuable insight into the mechanisms and processes that drive an eruption, and the way in which they change (Odbert ... -
Modelling PM2.5 concentrations and spatial correlation with weather conditions and adult asthma in north Texas in 2014
(2020-05-29)The questions to be answered by this study are whether weather conditions correlate with PM2.5 concentrations, and whether there is a correlation between asthma-related hospital admissions and PM2.5 concentrations. The ... -
Morphology Of The Lower Missouri River: The Processes Involving Development Of Highly Sinuous Gooseneck Loop Cutoffs Exposed In The Surficial Deposits Of The River Floodplain
(Geology, 2012-04-11)Mapping the surficial deposits of the Missouri River from Sioux City, Iowa to Mondamin, Iowa brought to light a prominent set of landforms exposed in the floodplain and which are also easily visible via aerial photography. ... -
Morphology, Mechanisms, And Processes For The Formation Of A Non-bifurcating Fluvial-deltaic Channel Prograding Into Grapevine Reservoir, Texas
(Environmental & Earth Science, 2013-07-22)Non-bifurcating channels in modern reservoirs, tie channels, and the Mississippi River Bird-Foot Delta share a common morphology that is likely due to an underlying common mechanism. Data analysis indicates that the Denton ... -
Motion And Rigidity Of The Caribbean Plate And Geodetic Observations Of Dominica, Lesser Antilles
The currently accepted kinematic model of the Caribbean plate presented by DeMets et al. (2007), is based on velocities from 6 continuous and 14 campaign GPS sites. This work attempts to refine the current plate model by ... -
MULTI-SCALE AND MULTI-APPROCH INVESTIGATIONS OF PETROPHYSICAL PROPERTIES AND FLUID FLOW IN NATURAL ROCKS
(2022-05-09)Natural rock is one of the most important geological attributes on the Earth that have been widely related to human daily life in various aspects. Rocks are usually utilized with respect to their petrophysical properties ... -
A Multiphysics Approach: Thermodynamics, Material Mechanics And Fluid Dynamics Of Magma Systems At Active Volcanic Regions
Understanding the genesis, incubation, evolution and equilibration of silicic magma reservoirs that drive and source volcanic activity all over the planet is fundamental to the discipline of geology. The subsurface processes ... -
Multiple Approaches To Characterizing Pore Structure For A Range Of Sandstones Samples
Using various approaches, this work examines pore structure (geometry and connectivity) of a range of sandstone samples with their permeability varying by five orders of magnitude. The following four experimental approaches ... -
NANO-PETROPHYSICAL CHARACTERIZATION OF THE OIL WINDOW OF EAGLE FORD SHALE FROM SOUTHWESTERN TO CENTRAL TEXAS, U.S.A.
(2020-08-05)Eagle Ford Shale and the overlying Austin Chalk are the main producing plays throughout Central Texas. Due to the high clastic nature of Eagle Ford Shale and its ability to produce and maintain fractures from hydraulic ... -
Nano-Petrophysical Properties of the Bone Spring and the Wolfcamp Formation in the Delaware Basin, New Mexico, USA.
(2019-05-09)The Permian Basin is one of the largest oil producing basins in the United States. The Permian Basin is 260 miles by 300 miles in area and encompasses 52 counties in southeast New Mexico and West Texas. In the past decade, ... -
Nano-petrophysical study of the Dean, Wolfcamp, and Canyon formations of the Midland Basin, Texas, USA.
(2019-12-05)The prolific levels of oil and gas production from the shale revolution have been plagued by steep initial production decline and inefficiencies in recovering the total hydrocarbons in place. Even the widespread practice ... -
NANO-PETROPHYSICS OF AVALON SHALE OF THE DELAWARE BASIN OF WEST TEXAS & SOUTHEASTERN NEW MEXICO
(2019-01-17)The Avalon Shale is a Permian-aged stratum and represents a significant rock unit within the Bone Spring, of the Delaware basin of West Texas and Southeastern New Mexico. The Delaware Basin has witnessed increased drilling ... -
NANO-PETROPHYSICS OF THE DEAN, SPRABERRY, AND WOLFCAMP FORMATIONS OF THE MIDLAND BASIN
(2019-05-15)Technological advances in hydraulic fracturing and horizontal drilling have led to a surge in oil and gas production in unconventional shale reservoirs over the past several decades. The Permian Basin of Northwest Texas ...