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Dissertations / Theses on the topic 'Geologic'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Karnes, Eric. "Geologic Typography." VCU Scholars Compass, 2010. http://scholarscompass.vcu.edu/etd/2132.

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In this project, I explore how the processes and structures of non-design disciplines can influence typographic form. Using the field of geology as a test case, I apply geologic processes to typographic form in order to create dimensional structures that speak to a wide audience.

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2

Steele-MacInnis, Matthew. "Thermodynamics of geologic fluids." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/22026.

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Fluids play a vital role in essentially all geologic environments and processes, and are the principal media of heat and mass transfer in the Earth. The properties of geologic fluids can be diverse, as fluids occur at conditions ranging from ambient temperatures and pressures at Earth's surface, to extreme temperatures and pressures in Earth's deep interior. Regardless the wide ranges of conditions at which geologic fluids occur, fluid properties are described and governed by the same fundamental thermodynamic relationships. Thus, application of thermodynamic principles and methods allows us t

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3

Brown, Anne L. "The unfolding of geologic space /." Online version of thesis, 1989. http://hdl.handle.net/1850/11329.

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4

Pater, Susan, Kim McReynolds, and Kristine Uhlman. "Arizona Watershed Stewardship Guide: Geologic Processes." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2005. http://hdl.handle.net/10150/146929.

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9 pp.<br>Arizona Watershed Stewardship Guide (10 related modules to be published in combined form)<br>Arizona Watershed Stewardship Guide was created to help individuals and groups build a mutual foundation of basic knowledge about watersheds in Arizona. It is intended to help Arizonans understand and be good stewards of their watersheds. The guide was designed to compliment the mission of Arizona Master Watershed Steward program to educate and train citizens across the state of Arizona to serve as volunteers in the restoration, conservation, monitoring, and protection of their water and water

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5

Jenett, Tilmann [Verfasser]. "Modern geologic mapping : The conceptual development and practical review of a digital geologic mapping approach / Tilmann Jenett." Berlin : Freie Universität Berlin, 2012. http://d-nb.info/1031421319/34.

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6

Lanagan, Peter D. "Geologic history of the Cerberus Plains, Mars." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/290115.

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This work examines the relative chronology of geologic units within the Cerberus Plains of Mars with an emphasis on lava flows emplaced after the last Marte Valles fluvial episode. High resolution images show the bulk of the Cerberus Plains is covered by platy-ridged and inflated lavas, which are interpreted as insulated sheet flows. Eastern Cerberus Plains lavas originate at Cerberus Fossae fissures and shields. Some flows extend for >2000 km through Marte Valles into Amazonis Planitia. Athabasca Valles are both incised into pristine lavas and embayed by pristine lavas, indicating that Athaba

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7

Okwen, Roland Tenjoh. "Enhanced CO2 Storage in Confined Geologic Formations." Scholar Commons, 2009. http://scholarcommons.usf.edu/etd/3683.

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Many geoscientists endorse Carbon Capture and Storage (CCS) as a potential strategy for mitigating emissions of greenhouse gases. Deep saline aquifers have been reported to have larger CO 2 storage capacity than other formation types because of their availability worldwide and less competitive usage. This work proposes an analytical model for screening potential CO 2 storage sites and investigates injection strategies that can be employed to enhance CO 2 storage. The analytical model provides of estimates CO 2 storage efficiency, formation pressure profiles, and CO 2 –brine interface locatio

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8

Shirazi, Ali 1975. "Mechanics of poroelastic geologic media susceptible to damage." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85097.

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The classical theory of poroelasticity developed by Biot (1941) deals with the time-dependent response of the fluid-saturated porous media derived from the coupling of the mechanical deformations and the deformations of pore fluid. The classical theory of poroelasticity has been successfully applied to a range of problems of interest to geomechanics and biomechanics. The brittle poroelastic media can experience alterations in poroelasticity properties resulting from the generation and/or growth of micro-defects. The effects can be modelled by appeal to continuum damage mechanics. Damage

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9

Reynolds, David A. "Multiphase flow and transport in fractured geologic environments." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ63448.pdf.

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10

Smith, Brent. "An examination of desert geomorphology throughout geologic time /." Connect to resource, 1998. http://hdl.handle.net/1811/28576.

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11

Mirabile, Benjamin T. "Geologic feature prediction using roof bolter drilling parameters." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=3216.

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Thesis (M.S.)--West Virginia University, 2003.<br>Title from document title page. Document formatted into pages; contains xii, 84 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 83).

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12

Hajdarwish, Ala' M. "Geologic Controls of Shear Strength Behavior of Mudrocks." Kent State University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=kent1162259344.

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13

Croskell, Michael Sinclair. "Geologic and environmental modelling of impact ejecta processes." Thesis, Imperial College London, 2002. http://hdl.handle.net/10044/1/8199.

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14

Gupta, Neeraj. "Geologic and fluid-density controls on the hydrodynamics of the Mt. Simon Sandstone and overlying geologic units in Ohio and surrounding states." The Ohio State University, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=osu1258484847.

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15

Lelièvre, Peter George. "Integrating geologic and geophysical data through advanced constrained inversions." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/6661.

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To be reliable, Earth models used for mineral exploration should be consistent with all available geologic and geophysical information. There are two areas of research that are important to help achieve the goal of more reliable Earth models: development of geophysical inversion methods that 1) increase the kinds of geologic information that can be incorporated, and 2) can combine several complimentary types of geophysical data collected over the same Earth region. Discussions with geologists connected to exploration studies have identified several types of geologic information which could he

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16

Wenning, Douglas J. "Geoscape One : planning The Ohio State University's geologic park /." Connect to resource, 1998. http://hdl.handle.net/1811/29246.

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17

Green, Christopher Terry. "Effects of heterogeneity on reactive transport in geologic media /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2002. http://uclibs.org/PID/11984.

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18

Thompson, Kay Denise. "The stochastic characterization of glacial aquifers using geologic information." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/12235.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1994.<br>Includes bibliographical references (leaves 286-290).<br>by Kay Denise Thompson.<br>Ph.D.

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19

Ivanova, Violeta Mintcheva. "Geologic and stochastic modeling of fracture systems in rocks." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/10025.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1998.<br>Includes bibliographical references (p. 365-370).<br>by Violeta Mintcheva Ivanova.<br>Ph.D.

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20

Szulczewski, Michael Lawrence. "The subsurface fluid mechanics of geologic carbon dioxide storage." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/82834.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 157-168).<br>In carbon capture and storage (CCS), CO₂ is captured at power plants and then injected into deep geologic reservoirs for long-term storage. While CCS may be critical for the continued use of fossil fuels in a carbon-constrained world, the subsurface behavior of CO₂ remains poorly understood, which has contributed to the absence of government policy to implement CCS. In this Thesis, we

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21

Gregory, Brittney. "Geologic and Lithic Analysis of the Red River Cache." Thesis, University of North Texas, 2011. https://digital.library.unt.edu/ark:/67531/metadc67986/.

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The Red River Cache is an assemblage of 33 bifaces, found in Cooke County, along Cache Creek, a tributary to the Red River. Also found with the cache was a hearth which yielded charcoal for AMS dating which returned an age of 2770- 2710 Cal YBP placing the cache in the Late Archaic. The geologic investigation of Cache Creek established 3 Holocene allostratigraphic units that provide information depositional environments adjacent to the Red River. Lithic analysis explored the production of bifaces during the Late Archaic and compared the cache to regional records. Using both geologic and lithic

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22

Jayne, Jr Richard Scott. "Implications of permeability uncertainty within engineered geologic fluid systems." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/94392.

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Carbon-capture and sequestration (CCS) in geologic reservoirs is one strategy for reducing anthropogenic CO2 emissions from large-scale point source emitters. Recent developments have shown that basalt reservoirs are highly effective for permanent mineral trapping on the basis of CO2-water-rock interactions, which result in the formation of carbonate minerals. However, the injection of super-critical CO2 into the subsurface causes a disturbance in the pressure, temperature, and chemical systems within the target reservoir. How the ambient conditions change in response to a CO2 injection ultima

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23

Orr, Shlomo. "Stochastic approach to steady state flow in nonuniform geologic media." Diss., The University of Arizona, 1993. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1993_409_sip1_w.pdf&type=application/pdf.

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24

Zhang, Dongxiao. "Conditional stochastic analysis of solute transport in heterogeneous geologic media." Diss., The University of Arizona, 1993. http://hdl.handle.net/10150/186553.

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This dissertation develops an analytical-numerical approach to deterministically predict the space-time evolution of concentrations in heterogeneous geologic media conditioned on measurements of hydraulic conductivities (transmissivities) and/or hydraulic heads. Based on the new conditional Eulerian-Lagrangian transport theory by Neuman, we solve the conditional transport problem analytically at early time, and express it in pseudo-Fickian form at late time. The stochastically derived deterministic pseudo-Fickian mean concentration equation involves a conditional, space-time dependent dispersi

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25

Venable, Margaret Ellen. "A geologic, tectonic and metallogenic evaluation of the Siuna terrane." Diss., The University of Arizona, 1994. http://hdl.handle.net/10150/186894.

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The Siuna terrane, defined here for the first time, is composed of slices of limey sedimentary strata, intermediate volcanic rock, serpentinite, and ultramafic cumulates, thrust together in the lower Upper Cretaceous. The terrane is intruded by intermediate dikes, plugs and plutons dated from 75 to 60 Ma, and is cut by Tertiary normal and strike-slip faults. The Siuna terrane volcanic and sedimentary strata probably formed in a Lower Cretaceous volcanic arc and associated back-arc or inter-arc basin. They host a Zn-Cu-Au volcanogenic massive sulfide occurrence and a Au-Cu skarn (the Siuna Mine

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26

Elder, Alexander Noyes 1957. "Neutron gauge calibration model for water content of geologic media." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/191994.

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A neutron gauge must be calibrated before it can be used to measure volumetric water content. Calibration is a function of the design of the gauge's probe, the geometry of the access hole, and the composition of the material. It is typically derived from an empirical relationship between counts of neutrons and known water contents. For consolidated rocks, this empirical calibration is difficult. A calibration procedure based on a numerical model of a neutron gauge is developed to overcome the difficulties. The theory behind the model is the Three Group Diffusion theory. The input parameters ar

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27

Kirk, Jason Donald. "Rhenium-osmium systematics of orogenic gold deposits through geologic time." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/280717.

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Here we report new and previously published Re-Os and trace elemental data on gold as well as coeval sulfides and oxides from various Archean to Alphanumeric gold deposits. When possible, measured concentrations and isotopic ratios were used to determine geochronology as well as the likely source reservoir of the gold mineralization. Rhenium-osmium ages of some gold and related minerals are consistent with existing geochronology and in some cases better constrain genetic models of mineralization. The initial Os isotopic composition is also preserved within some ore minerals and reflects the im

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28

Hong, Aojie. "Up-scaling of Polymer Flooding with regards to Geologic Heterogeneities." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for petroleumsteknologi og anvendt geofysikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-25566.

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Up-scaling of reservoir model is required to save computational time and costs in the industry. Due to numerical dispersion caused by enlarged grid size and reduced reservoir heterogeneity during up-scaling process, the simulation accuracy is reduced. This means that the simulation results on the coarse grid models cannot correctly represent the performance of polymer flooding. Although many up-scaling methods can be applied to reproduce fine grid simulation results on coarse grid models for water/oil flow, few studies take polymer flooding into account.Based on previous studies, it is found t

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29

Harris, William B. "The geologic history of Rock Canyon, Utah : a virtual trip /." CLICK HERE for online access, 2002. http://www.geology.byu.edu/faculty/rah/slides/Rock%20Canyon/Home.htm.

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Thesis (M.S.)--Brigham Young University. Dept. of Geology, 2002.<br>Web site works as of 02/10/03. Consult BYU Dept of Geology for URL changes in future. Includes bibliographical references (leaves 8-9). Also available via Internet.

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30

Tulaczyk, Slawek M. Kamb Barclay. "Basal mechanics and geologic record of ice streaming, West Antarctica /." Diss., Pasadena, Calif. : California Institute of Technology, 1999. http://resolver.caltech.edu/CaltechETD:etd-03092004-155058.

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31

Driscoll, Nicholaus D. "Geologic Map of the Deer Point Quadrangle, Garfield County, Utah." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3276.

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A new geologic map of the Deer Point 7.5' quadrangle located in the southern region of Capitol Reef National Park in south-central Utah provides stratigraphic and structural detail not previously available. The Deer Point quadrangle was mapped at a scale of 1:24,000 and is the fourth geologic map completed at this scale in Capitol Reef National Park. Twelve Quaternary units and eighteen bedrock formations and members are exposed in the Deer Point quadrangle. Bedrock formations range in age from Triassic to Cretaceous. The details not available on previous geologic maps include: four alluvial t

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32

Wolfinger, Doug C. "Geologic Characterization of Ladon Valles, Mars and the Surrounding Area." Ohio University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1398291492.

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33

Abegunde, Oluseyi Ayokunle. "Geologic and geological assessment of Acid Mine Drainage and heavy metals contamination in the West Rand, Witwatersrand Basin, South Africa." University of the Western Cape, 2015. http://hdl.handle.net/11394/4785.

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Masters of Science<br>Over the years, South Africa has produced over 468 million tons of mine waste yearly, in which gold mining waste accounted for 221 million tons (47%) of all mine waste produced, making it the largest, single source of waste and pollution. The exposure of these mine wastes such as tailings dams, waste rocks to oxidation and leaching has been the source of heavy metal release into the environment. This study assessed the magnitude of possibly leachable metals, its distribution and associations and predicted the AMD load discharge over time, from Mogale’s tailings dam into

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34

Copfer, Torrey J. "Geology of the Deseret Peak East 7.5' Quadrangle, Tooele County, Utah, and Impacts for Hydrology of the Region." DigitalCommons@USU, 2003. https://digitalcommons.usu.edu/etd/6723.

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Detailed geologic mapping of the Deseret Peak East 7.5' Quadrangle yields new interpretations regarding the stratigraphy of the Oquirrh Basin, fault and fold geometry, and structural evolution of the region. The Stansbury Range consists of the north-southtrending Deseret anticline. Basal Mississippian units rest unconformably on Cambrian beds in the central part of the range. Paleozoic uplift, Mesozoic contraction, and Cenozoic extension have created a series of broad folds, large thrust faults, and several normal faults. The area is dominated by bedrock springs, with the presence of abundant

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35

Bellante, Gabriel John. "Hyperspectral remote sensing as a monitoring tool for geologic carbon sequestration." Thesis, Montana State University, 2011. http://etd.lib.montana.edu/etd/2011/bellante/BellanteG1211.pdf.

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The contemporary global climate crisis demands mitigation technologies to curb atmospheric greenhouse gas emissions, principally carbon dioxide (COâ‚‚). Geologic carbon sequestration (GCS) is a method by which point source COâ‚‚ emissions are purified and deposited in subsurface geologic formations for long-term storage. Accompanying this technology is the inherent responsibility to monitor these large-scale subsurface reservoirs for COâ‚‚ leaks to ensure safety to local environments and inhabitants, as well as to alleviate global warming. Elevated COâ‚‚ levels in soil

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36

Konter, Jasper Gerard. "The origin and geologic evolution of seamounts in the Pacific Ocean /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2007. http://wwwlib.umi.com/cr/ucsd/fullcit?p3254835.

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37

Byers, Johnny A. Ferring C. Reid. "The geologic and archaeological history of the Dickie Carr Site 41PR26." [Denton, Tex.] : University of North Texas, 2007. http://digital.library.unt.edu/permalink/meta-dc-3697.

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38

Zhang, You-Kuan. "A quasilinear theory of time-dependent nonlocal dispersion in geologic media." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/185039.

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A theory is presented which accounts for a particular aspect of nonlinearity caused by the deviation of plume "particles" from their mean trajectory in three-dimensional, statistically homogeneous but anisotropic porous media under an exponential covariance of log hydraulic conductivities. Quasilinear expressions for the time-dependent nonlocal dispersivity and spatial covariance tensors of ensemble mean concentration are derived, as a function of time, variance σᵧ² of log hydraulic conductivity, degree of anisotropy, and flow direction. One important difference between existing linear theorie

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39

Zhang, Dongxiao 1967. "Some aspects of stochastic flow and transport in complex geologic media." Thesis, The University of Arizona, 1992. http://hdl.handle.net/10150/278215.

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This thesis has analyzed some aspects of stochastic flow and transport in geologic media with a random stationary and statistically isotropic hydraulic conductivity field. Explicit expressions for cross-covariances between velocity and head, and velocity and log conductivity as well as covariances of velocity under steady state uniform mean three-dimensional flow with an exponential log conductivity covariance are derived to first order and their structure is examined. An exact early time solution due to Batchelor for the mean concentration is compared with other existing stochastic solutions

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40

Parthasarathy, Hariprasad. "Arsenic Dissolution from Sedimentary Formations under Geologic Carbon Dioxide Storage Conditions." Research Showcase @ CMU, 2014. http://repository.cmu.edu/dissertations/488.

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The overall goal of this Ph.D. study was to investigate the mobilization of arsenic (As) from sedimentary formations under conditions representative of geologic carbon dioxide storage (GCS) i.e., high pressure, temperature, and salinity. GCS is a promising technology for the mitigation of increasing CO2 emissions in the atmosphere. It primarily involves the capture of CO2 from point sources, followed by transport and injection into deep subsurface formations for long-term storage. Of the potential subsurface formations under consideration in the United States, saline formations, characterized

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41

Long, Lauren M. "Evidence of geologic phosphorus from groundwater seepage to Newnans Lake, Florida." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0041275.

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42

Decker, Megan Carolee. "Paterae on Io: Geologic Mapping of Tupan Patera and Experimental Models." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/5306.

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Paterae cover approximately 2% of the surface of Io, Jupiter’s volcanically active moon. To understand the formation of these volcano-tectonic depressions we created a geologic map of a key region and compared this map with experimental models for Io paterae. Our mapping region is Tupan Patera, a patera that has experienced recent activity and is a detected hot spot. We identified four primary types of geologic materials: plains, patera floors, flows, and diffuse deposits. We constructed an experimental model to test previous suggestions that paterae may form as volatiles in the silicate crust

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Meyer, Thomas 1970. "Geologic stochastic modeling of rock fracture systems related to crustal faults." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9317.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1999.<br>Includes bibliographical references (p. 223-225).<br>In this study, the capabilities of the MIT three-dimensional geologic stochastic fracture model were extended so that fracture systems related to crustal faulting can be simulated. As presented here, the model comprises four stochastic processes: 1) a homogeneous, anisotropic Poisson process to model the orientation of the potential fracture planes according to an orientation distribution; 2) a homogeneous Poisson line process that te

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Zhang, Feng. "Constitutive Models for Geologic Materials and Their Application to Excavation Problems." Kyoto University, 1995. http://hdl.handle.net/2433/160758.

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本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものである<br>Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(工学)<br>甲第6009号<br>工博第1406号<br>新制||工||983(附属図書館)<br>UT51-95-D328<br>京都大学大学院工学研究科交通土木工学専攻<br>(主査)教授足立紀尚, 教授柴田徹, 教授大西有三<br>学位規則第4条第1項該当

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Cist, David Bishop. "Ground penetrating radar characterization of geologic structure beneath the Aberjona wetland." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/53040.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1999.<br>Includes bibliographical references (leaves 232-236).<br>Ground penetrating radar (GPR) surveys are performed to determine geologic structure and to assist in the characterization and eventual modeling of ground water flow beneath the Well-H region of the Aberjona River in Woburn, Massachusetts. Even though cone penetrometer and coring studies provide point source "ground truth" data about the stratigraphy, soil chemistry, and composition of the first seven meters of peat, sand

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Timm, Sarah Louise. "The Generation and Management of Museum-Centered Geologic Materials and Information." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/31572.

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This thesis integrates three disciplines: geosciences, computer science, and museum collections management. Although these are not commonly integrated, by developing their intersection this thesis uniquely contributes a much-needed system for effectively managing geological collections. The lack of effective organization and management of collections can result in a serious problem: not only is history lost, but so is the potential for collection of further data from documented samples using newer analytical techniques. Using the Department of Geosciences at Virginia Tech as a beta testing gro

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Kane, William F. "Geologic and geotechnical controls on the stability of coal mine entries." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/64668.

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Roof and rib failures in underground coal mines are one of the major problems facing the industry today. In addition to safety considerations, the resulting economic impact of such failures is staggering. Uncovering and replacing buried and damaged equipment and clearing entries can account for a large expenditure in lost man-hours and machinery. Yet, because of the complex nature of their formation, geological variability, and structural characteristics, coal mine roof strata are one of the least controllable of all mine design parameters. This is especially true along the leading (southeaste

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Kiracofe, Zachary Aaron. "Assessing the geologic sources of manganese in the Roanoke River watershed." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/52890.

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Elevated manganese (Mn) concentrations have been measured in groundwater within the Roanoke River watershed, Virginia. Concentrations of Mn often exceed the secondary drinking water standard. A historic belt of Mn ores, the James River-Roanoke River Manganese District (JRRRMD), occurs in the eastern part of the watershed. The project objectives were to 1) evaluate the formation of the JRRRMD ore deposits and 2) analyze existing groundwater chemistry data to evaluate sources and processes that control groundwater Mn. Analysis of ore minerals, morphologies, and chemistry provides support that

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Byers, Johnny A. "The Geologic and Archaeological History of the Dickie Carr Site 41PR26." Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc3697/.

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This thesis is an analysis and synthesis of the geologic and archaeological history of the Dickie Carr site, 41PR26, on Mill Creek in north central Texas. Included are analyses of the stratigraphy, sedimentary environments, and soils of the locality. A regional comparison is made with respect to the Late Quaternary geology of the upper Trinity River basin, Texas to interpret the geologic data. Two stratigraphic units were identified that record the Pleistocene-Holocene transition. The buried lower unit is comprised of terrace, floodplain, and channel deposits with extensive pedogenesis. The un

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Krall, Lindsay. "The mobility of natural uranium at Forsmark, Sweden, through geologic time." Doctoral thesis, Stockholms universitet, Institutionen för geologiska vetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-135735.

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Abstract:

In this thesis, the response of uranium minerals and poorly crystalline phases to changes in geochemical conditions through geological time has been assessed in order to understand the mobility of natural uranium in the fracture network of a proposed site for a spent nuclear fuel repository in Forsmark, Sweden. Identification and characterization of solid phase uranium have been performed through electron microprobe analysis and optical petrography (Article I). The identified uraninite, haiweeite, and uranophane crystals have been dated using U-Pb and Pb-Pb isotope ratios obtained from seconda

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