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Geology: Recent submissions
Now showing items 141-160 of 480
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POROSITY EVOLUTION ASSOCIATED WITH CLOSELY-SPACED DISCONFORMITIES, MID-CRETACEOUS CARBONATE PLATFORM, MEXICO
(University of Kansas, 2016-08-31)El Abra Formation was cyclically deposited on an isolated, steep-sided, high-relief carbonate platform in the Tampico-Misantla basin during the mid-Cretaceous. Sea-level oscillations recorded by shallowing-upward cycles, ... -
Conodont (U-Th)/He thermochronology of the Mormon Mountains, Tule Spring Hills, and Beaver Dam Mountains, southeastern Nevada and southwestern Utah
(University of Kansas, 2016-12-31)ABSTRACT Although (U-Th)/He thermochronology is a well-established dating technique used to understand the temperature-time histories of rocks, the method is restricted to rocks that contain specific accessory minerals ... -
Characterizing the potential for fault reactivation related to fluid injection through subsurface structural mapping and stress field analysis, Wellington Field, Sumner County, KS
(University of Kansas, 2016-12-31)South-central Kansas, although historically stable, has experienced an increase in seismic activity since 2013. The correlation with brine disposal operations has renewed interest in the role of fluids in fault reactivation, ... -
Stable isotope paleohydrology of pedogenic carbonates in the Wayan Formation (Albian) from the wedge-top depozone in the North American Cretaceous Western Interior Basin
(University of Kansas, 2016-12-31)Determining the presence and effects of orogenic rain shadows on paleoclimate is challenging, but critical to understanding overall moisture and heat transport. This thesis presents new data and interpretation for the ... -
Revisiting Dolomitization in the Isla de Mona Isolated Carbonate Platform: Marine, Mixing, Reflux, or Biogenic?
(University of Kansas, 2016-12-31)Predicting the origin of dolomite is critical to understanding porosity and permeability in conventional oil and gas reservoirs. Studies evaluating the mechanism for dolomitization can be applied to those reservoirs as ... -
Assessment of Aquifer Mixing and Salinity Intrusion in the North-Western Sahara Aquifer System: A Hydrogeochemical Analysis- Algeria, Tunisia
(University of Kansas, 2016-12-31)The North-Western Sahara Aquifer System is a complex multilayer leaky aquifer system providing water to Algeria, Tunisia, and Libya. Changing the hydrologic equilibrium through pumping can cause previously isolated saline ... -
Carbon Storage in the Arbuckle Aquifer, Wellington Kansas: An experimental Investigation of the Geochemical and Microbiological Effects of Supercritical CO<sub>2</sub> Exposure and Implications for Seal Integrity, Reservoir Storage Capacity, and Injectivity
(University of Kansas, 2015-08-31)Captured CO2 emissions can be injected and stored in geologic formations as a way to mitigate the effects of rising atmospheric CO2 levels on global climate. Mineral weathering reactions in the presence of CO2 can affect ... -
QUANTIFYING THE ROLES OF CHEMICAL AND MICROBIAL WEATHERING IN ACID-SULFATE HYDROTHERMAL SYSTEMS
(University of Kansas, 2014-12-31)Although the roles of microbial and chemical processes are relatively well-studied in neutral-chloride hydrothermal systems, very few studies have addressed these processes in acid-sulfate hydrothermal systems. This study ... -
Algorithms and software for U-Pb geochronology by LA-ICPMS
(American Geophysical Union, 2016-07-10)The past 15 years have produced numerous innovations in geochronology, including experimental methods, instrumentation, and software that are revolutionizing the acquisition and application of geochronological data. For ... -
Seasonal control of Petermann Gletscher ice-shelf melt by the ocean's response to sea-ice cover in Nares Strait
(Cambridge University Press, 2017-02-02)Petermann Gletscher drains ~4% of the Greenland ice sheet (GrIS) area, with ~80% of its mass loss occurring by basal melting of its ice shelf. We use a high-resolution coupled ocean and sea-ice model with a thermodynamic ... -
Some Pennsylvanian Ostracodes from the Henrietta formation of eastern Missouri
(University of Kansas, 1928) -
Notes on the paleontology of the Garrison formation of Kansas
(University of Kansas, 1929) -
SEQUENCE STRATIGRAPHY AND FACIES DISTRIBUTION IN A MIOCENE CARBONATE PLATFORM; LA RELLANA PLATFORM AREA, SOUTHEASTERN SPAIN
(University of Kansas, 2016-08-31)A 2-dimensional coastal exposure of the Miocene-age Rellana carbonate platform (Cabo de Gata Region, Southeast Spain) provides an opportunity to study the facies and stratigraphy, determine the processes controlling ... -
Near-surface void characterization and sensitivity analysis using enhanced processing procedures on passive Multi-Channel Analysis of Surface Waves (MASW) data
(University of Kansas, 2016-05-31)Enhanced processing procedures on passive multichannel analysis of surface-waves (MASW) data were utilized to identify velocity anomalies above known salt solution voids in Hutchinson, Kansas, likely caused by the changing ... -
Spatial and temporal patterns of Ogallala Formation deposition revealed by U-Pb zircon geochronology
(University of Kansas, 2016-08-31)Difficulties in correlation within continental clastic basins arise from the common shortage of reliable marker beds, which limits characterization of geological relationships. In the High Plains of the central United ... -
Distributed subglacial discharge drives significant submarine melt at a Greenland tidewater glacier
(American Geophysical Union (AGU), 2015-12)Submarine melt can account for substantial mass loss at tidewater glacier termini. However, the processes controlling submarine melt are poorly understood due to limited observations of submarine termini. Here at a tidewater ... -
Quantifying flow regimes in a Greenland glacial fjord using iceberg drifters
(American Geophysical Union (AGU), 2015-01)Large, deep-keeled icebergs are ubiquitous in Greenland's outlet glacial fjords. Here we use the movement of these icebergs to quantify flow variability in Sermilik Fjord, southeast Greenland, from the ice mélange through ... -
HydrogeoEstimatorXL: an Excel-based tool for estimating hydraulic gradient magnitude and direction
(2016)HydrogeoEstimatorXL is a free software tool for the interpretation of flow systems based on spatial hydrogeological field data from multi-well networks. It runs on the familiar Excel spreadsheet platform. The program ... -
Carbon cycling: The role of Methane and Copper in an early ocean analogue Lake Matano
(University of Kansas, 2015-05-31)This dissertation examines the carbon cycle of a modern ferruginous environment (Lake Matano, Indonesia), with a primary focus on the critical role of methane in carbon redistribution in this system. In addition, the ...