Browsing OU - Theses by Author "Elwood Madden, Megan"
Now showing items 1-12 of 12
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ANHYDRITE NUCLEATION AND GROWTH AT LOW TEMPERATURES: EFFECTS OF FLOW RATE, ACTIVITY OF WATER, AND MINERAL SUBSTRATES
Miller, Kayla (2017-05)Understanding calcium sulfate mineral formation is crucial to understanding depositional environments and diagenetic conditions on and near the martian surface where calcium sulfates with varying hydration states have been ... -
Assessment of spectral attributes in identifying gas hydrates in seismic data from the Pegasus Basin, offshore New Zealand
Jackson, Emily (2023-05-13)Gas hydrates are formed in the subsurface along shallow ocean basins or in permafrost settings, and are commonly identified in the seismic data by the bottom-simulating reflector (BSR). Various methods have been employed ... -
Characterizing Ferrihydrite Transformation Products in Near-Saturated Brine Environments
Barbre, Kaydra (2023-05)Ferrihydrite transformation pathways are critical in understanding iron cycling and mineral transformation processes in extraterrestrial systems such as those observed on Mars. While common throughout terrestrial near-surface ... -
COMPARATIVE SEM ANALYSIS OF QUARTZ MICROTEXTURES ON FLUVIAL SAND FROM END-MEMBER CLIMATE SYSTEMS
Smith, Curtis (2016-05-14)Microtextural analyses of sedimentary quartz grains are increasingly used as a paleoenvironmental proxy, as particular microtextures have been proposed to reflect processes unique to particular environmental or climatic ... -
Effects of pH on the Raman Spectra of Brines
Abney, Bailey (2022-05-14)The use of Raman spectroscopy on Mars can help us understand the geochemistry of past or present brines on Mars which could help us assess the overall habitability of Mars. Raman can detect biosignatures from organic matter, ... -
EVALUATING DESERT SILT PRODUCTION USING FIELD, EXPERIMENTAL, AND REMOTE-SENSING METHODS
Adams, Steven (2018-05)Production of the silt that forms loess deposits has been attributed to processes operating in both glacial environments (via glacial grinding) and warm deserts (via saltation-induced fracturing). However, the efficacy of ... -
Evolution of the Hydrothermal Stage within Miarolitic Cavities in Granitic Pegmatites of California and Maine, USA
Duval, Charles (2019-08-01)Clay and alkali feldspar samples from miarolitic cavities of the pegmatites of Maine and California provide some of the best lines of evidence for gaining a better understanding of the hydrothermal stage within the pockets. ... -
Examining Seismic Amplitude Responses of Gaseous Media Using Unsupervised Machine Learning
Chenin, Julian (2020-12-18)The presence of gas in the rock’s or sediment’s pore space significantly affects its seismic amplitude response and modifies its subsurface signature. Gas hydrates in the subsurface are often difficult to image with ... -
Impacts of well pumping on trace metals in the Central Oklahoma Aquifer, Norman, OK
Tomlinson, Zachary (2021-12-18)Due to increasing global demand for fresh water, it is increasingly necessary to understand how aquifer pumping affects groundwater chemistry. Water quality may be affected by mobilizing naturally occurring salts or trace ... -
Observations of Mars analogous basalt in near saturated brines
Rodriguez, Andrew (2020-05)The Mars 2020 rover and the ExoMars rover will include a Raman spectrometer as part of the suite of instruments onboard the rovers and will be the first times a Raman spectrometer will take direct measurements on the surface ... -
PALEOMAGNETIC ANALYSIS OF THE FLYNN CREEK AND WELLS CREEK IMPACT STRUCTURES, TENNESSEE, U.S.A.
Rohleder, Nicholas (2019)The Flynn Creek impact structure consists of a 3.8-km circular feature that contains deformed Ordovician through Devonian limestones and dolomites. The age of this structure is stratigraphically constrained by the ... -
Raman spectroscopy and its applications to ice-sediment-brine matrices in recurring slope lineae on Mars
Mason, Daniel (2020-05-08)Raman spectroscopy is an ideal tool to analyze the geochemical make up of various compounds, be they solid, liquid, gas, or a combination of multiple phases. This research seeks to determine how changes in both temperature ...