Theses/Dissertations - Geosciences
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Extraction of body wave arrivals from seismic interferometry using time series features and machine learning methods and their applications to seismic tomography.
(2021-12-03)The development of seismic interferometry methods in the last decade has increased the utility of passive seismic surveys for seismic modeling and monitoring. Since passive seismic surveys do not require manual efforts in ... -
Selecting locations for future geophysical surveys in search of the Dog Valley fault using earthquake, LiDAR, and GPS data.
(2021-09-08)I used the seismo-lineament analysis method to define the area where the ground-surface trace of the Dog Valley fault (DVF) – responsible for the M6 Truckee earthquake of 1966 – might be located. The best-fit plane through ... -
Regional elemental and organic geochemical character of the Devonian/Mississippian Exshaw Formation across Alberta, Canada.
(2021-08-04)A regional geochemical study of the Devonian/Mississippian Exshaw shale across Alberta was conducted to test the hypothesis that the shale has widespread organic matter richness accompanied by redox-sensitive trace metal ... -
The springshed and potential recharge areas for the Downtown Salado Spring Complex, Salado, Texas.
(2021-08-01)The Northern Segment of the Edwards (BFZ) Aquifer is a complex, karst system experiencing increases in groundwater demand and environmental stresses in response to a growing population. This study delineated the Salado ... -
Phanerozoic trends in the ecological tolerance of Lingula and extinction selectivity of marine invertebrates.
(2021-08-03)Environmental affinity analyses of Lingula throughout the Phanerozoic for depth, lithology, grainsize, and latitude using three different affinity metrics reveal that lingulids have high ecological tolerance relative to ... -
Developing methodologies for supporting groundwater monitoring, management, and sustainability in central Texas and northern Uganda.
(2021-08-01)In data-scarce and geologically complex aquifers, knowledge building remains an important foundation for further field studies, aquifer modelling, and otherwise supporting sustainable resource development and management. ... -
Effluent-impacted groundwater-surface water interactions in the Brazos River Alluvium Aquifer : a study on Bullhide Creek.
(2021-08-04)The primary recharge source to the Brazos River Alluvium Aquifer (BRAA), a water table aquifer in central Texas, is through direct precipitation on the floodplain. However, recharge provided by other sources, such as Brazos ... -
Embayments in explosive, silicic eruptions : a textural, numerical, and experimental assessment.
(2021-08-09)I explore the occurrence and formation of embayments in quartz using textural, experimental, and numerical techniques. Embayments are pockets of melt partially trapped inside of volcanic crystals. During eruption these ... -
Guiana Shield diamonds, the sub-cratonic lithosphere, and kimberlite emplacement in the upper crust.
(2021-08-02)The origin of diamonds from Guyana have remained an enigma despite being mined for nearly 150 years within the Guiana Shield. These gemstones are an undescribed diamond suite within an understudied portion of the Amazonian ... -
Was there a Northern Dust Bowl? Evidence for heightened wind erosion and dust sources during the 1930s in the Northern Great Plains, USA.
(2021-08-08)The 1930s Dust Bowl Drought was a catastrophic event that caused widespread soil erosion and dust storms in the United States Southern Great Plains (SGP). Despite evidence for similar drought conditions and enhanced erosion, ... -
Hydrocarbon development potential of the Early Jurassic Gordondale Member of the Fernie Formation, Alberta, Canada.
(2021-08-09)The Gordondale Member of the Nordegg Formation of west-central Alberta, Canada contains hydrocarbon resources. The analysis of borehole petrophysical data across Alberta is used to calculate the amount of hydrocarbon ... -
Late Quaternary sedimentary architecture and depositional history of the Monahans Dune Field, Winkler County, TX.
(2021-08-09)The Monahans dune field is a Quaternary eolian system on the Southern High Plains in west Texas. Previous work characterizing the Monahans is limited by the depth and spatial coverage of stratigraphic analyses. This study ... -
Assessing the magnitude and frequency of hydrological processes and their effect on threshold channel morphology, North Bosque River, TX.
(2021-04-20)The North Bosque River (NBR) is a dynamic fluvial system experiencing geomorphic change resulting from hydrological and sedimentological influences. This thesis describes the forces that influence hydrological and ... -
Late Quaternary stratigraphy and chronology by thermal-transfer optically stimulated luminescence dating of quartz grains for the Monahans eolian system, Winkler County, Texas.
(2020-10-28)The Monahan's eolian system in west Texas is studied using sixteen Geoprobe cores, >5 m-long, providing a new stratigraphic record for the past 500 ka. The oldest part of the record >100 ka was dated using the novel ... -
Filling the gaps in the floral record : implications for paleobotanical paleoclimate models.
(2020-07-19)Plants are sensitive indicators of climate and environment. In particular, the size and shape (physiognomy) of woody dicotyledonous angiosperm leaves are correlated to climate, and these relationships are the basis for ... -
Using microgravity and passive seismic methods jointly to explore the Brazos River Alluvium Aquifer.
(2020-07-14)This study used a combined passive seismic (HVSR) and microgravity method to estimate depth to bedrock, alluvial composition, and saturated thickness throughout the Northern Segment of the Brazos River Alluvium Aquifer. ... -
Machine learning and remote sensing in the physical sciences : applications in Earth surface and atmospheric modeling.
(2020-07-21)It is imperative that the observable metrics of land and atmospheric systems (i. e., soil moisture and cloud formation) be accurately quantified prior to simulating water and energy transfer, where the components of flux ... -
Numerical modeling, uncertainty analyses, and machine learning for decision support in the geosciences.
(2020-07-01)My first paper shows the importance of numerical modeling and post-calibration uncertainty analyses for making decision to monitor waste transport at a naval waste repository site in Texas. For this, MODFLOW and MODPATH ... -
New approaches to characterize and simulate reservoirs by machine learning and model-coupling strategies.
(2020-06-10)This dissertation comprises two topics. The first topic introduces an innovative multiphase, multicomponent reservoir simulator to simulate the solvent thermal resource innovation process (STRIP). In this framework, a STARS ... -
Lithostratigraphic and depositional framework, near-surface Upper Pennsylvanian and Lower Permian strata, southern Brazos Valley, North-central Texas.
(1965)The purpose of this study was to interpret the depositional framework of the original Cisco Group, Upper Pennsylvanian and Lower Permian, in the shallow subsurface of North-central Texas, Stratigraphic interpretation was ...
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