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Geology: Recent submissions
Now showing items 441-460 of 480
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Climate controlled aggradation and cyclicity ofcontinental siliciclastic sediments in Wolfcampian cyclothems, Permian, Hugoton embayment U.S.A. - Data Repository
(2011-01-28)Climate controlled aggradation and cyclicity of continental siliciclastic sediments in Wolfcampian cyclothems, Permian, Hugoton embayment U.S.A. is an outcome of a larger study focused on the Wolfcampian gas resource in ... -
Quantifying Surface Subsidence along US Highway 50, Reno County, KS using Terrestrial LiDAR
(University of Kansas, 2010-04-23)US-50 in Reno County, KS east of Hutchinson has undergone active deformation from ground subsidence. Subsurface karsting from salt dissolution is the main cause for this phenomenon. Two prominent sinkhole features occur ... -
THE IMPACT OF MICROBIAL CHELATES ON MINERAL WEATHERING AND MICROBIAL METABOLIC ACTIVITY
(University of Kansas, 2010-04-25)Geological materials are composed of elements, which can be released into the environment by dissolution or desorption processes and directly impact the metabolic activity of microorganisms. If subjected to environmental ... -
NEW EARLY CAMBRIAN OLENELLINE TRILOBITES FROM THE SEKWI FORMATION, MACKENZIE MOUNTAINS, NORTHWEST TERRITORIES, CANADA, AND NEW INSIGHTS INTO OLENELLINID EVOLUTIONARY HISTORY AND BIOGEOGRAPHY
(University of Kansas, 2009-04-26)The olenellinid trilobites of the Early Cambrian are a diverse clade that has been an ideal group used in phylogenetic analyses. Recently, new specimens from the Sekwi Formation of the Mackenzie Mountains, Northwest ... -
Modeling the Near-Surface Using High-Resolution Seismic Data
(University of Kansas, 2010-01-26)In the Arabian Peninsula, the near-surface represents a major challenge in seismic exploration. For accurate deep subsurface reservoir imaging, an accurate near-surface velocity model is required. In this dissertation, I ... -
GEOLOGY, TAPHONOMY, AND PALEOECOLOGY OF A UNIQUE UPPER CRETACEOUS BONEBED NEAR THE CRETACEOUS-TERTIARY BOUNDARY IN SOUTH DAKOTA
(University of Kansas, 2010-04-27)This research examines a Konzentrat-Lagerstätte, the Bone Butte site, in the Upper Cretaceous Hell Creek Formation of South Dakota. Field data from a diverse multispecific bonebed in Harding County, South Dakota, including ... -
GEOCHEMICAL APPROACHES TO THE STUDY OF LIFE AND DEATH OF DINOSAURS FROM THE EARLY CRETACEOUS CEDAR MOUNTAIN FORMATION, UTAH
(University of Kansas, 2010-04-22)In this dissertation, geochemical analysis of fossil vertebrate remains are carried out to elucidate fossil diagenesis and for paleoenvironmental reconstructions. Rare earth elements (REE) are analyzed via laser ablation ... -
Paleoenvironment, paleoecology, and evolution of Maniraptoran "dinosaurs"
(University of Kansas, 2007-05-01)Maniraptora is a taxonomic group that includes the well-known primitive bird, Archaeopteryx , that is thought to have had limited power of flight, the small, four-winged, feathered glider, Microraptor and the terrestrial ... -
GLOBAL HYDRLOGIC PERSPECTIVES ON THE MID-CRETACEOUS GREENHOUSE CLIMATE (APTIAN-ALBIAN)
(University of Kansas, 2009-01-03)This dissertation examines the mid-Cretaceous greenhouse climate in the Aptian-Albian through the perspective of the global hydrologic cycle. Stable isotopic compositions of pedogenic and exposure surface carbonates presented ... -
INTERPRETING BEHAVIOR FROM EARLY CRETACEOUS BIRD TRACKS AND THE MORPHOLOGY OF BIRD FEET AND TRACKWAYS
(University of Kansas, 2009-09-17)Bird tracks were studied from the Lower Cretaceous Lakota Formation in South Dakota, USA, and the Lower Cretaceous Haman Formation, South Korea. Behaviors documented from the Lakota Formation included: (1) a takeoff behavior ... -
Mio-Pliocene erosional exhumation of the central Colorado Plateau, eastern Utah: New insights from apatite (U-Th)/He thermochronometry
(University of Kansas, 2009-08-20)The landscape evolution of the Colorado Plateau has been studied by scientists for over a century, yet its late Cenozoic erosional and geomorphic history remains poorly understood. This study investigates the temporal and ... -
Increasing Reflection Coherency Through Improved Statics Corrections: An Iterative Tomographic Approach
(University of Kansas, 2009-06-09)Computation and application of statics corrections have always been problematic on CMP reflection data, especially in highly weathered and structurally altered environments. Tomographic estimation of the velocity field ... -
Influence of Mississippian Karst Topography on Deposition of the Cherokee Group: Ness County, Kansas
(University of Kansas, 2009-06-12)The Cherokee Group (Desmoinesian, Middle Pennsylvanian) of Ness County, Kansas was deposited on the western flank of the Central Kansas uplift. Eleven lithofacies were defined in the Cherokee Group to better understand the ... -
Calibration of Rutile (U-Th)/He Thermochronology: assessing the thermal evolution of the KTB drill hole, Germany and adjacent Bohemian Massif
(University of Kansas, 2009-05-12)This study empirically calibrates zircon and rutile (U-Th)/He dating by evaluating the experimentally-derived He diffusion kinetics and their extrapolation over geological time by (U-Th)/He dating a suite of borehole samples ... -
Stratigraphy and Reservoir-analog Modeling of Upper Miocene Shallow-water and Deep-water Carbonate Deposits: Agua Amarga Basin, Southeast Spain
(University of Kansas, 2009-03-10)This study documents the basin-wide stratigraphic characterization and 3-D reservoir-analog modeling of upper Miocene carbonate deposits in the Agua Amarga basin, southeast Spain. Paleotopography and relative fluctuations ... -
The evolution of shallow seismic exploration methods
(Environmental and Engineering Geophysical Society, 1995-07)Near-surface seismic methods have developed considerably and have been applied much more widely since the 1970s. Improvements in instrumentation, along with cheaper computer power, have greatly affected the capabilities ... -
Ultra-Shallow Imaging Using 2D & 3D Seismic Reflection Methods
(University of Kansas, 2008-01-01)The research presented in this dissertation focuses on the survey design, acquisition, processing, and interpretation of ultra-shallow seismic reflection (USR) data in two and three dimensions. The application of 3D USR ... -
EVOLUTIONARY AND BIOGEOGRAPHIC PATTERNS OF TRILOBITES DURING THE END ORDOVICIAN MASS EXTINCTION EVENT
(University of Kansas, 2008-01-01)The end Ordovician mass extinction event is believed to have been caused by a geologically brief, sudden onset glacial period that interrupted a period of extreme greenhouse conditions. The cause of this icehouse is a ... -
Coupling: Impact and Implications for High-Resolution Time-Lapse Seismic Surveying
(University of Kansas, 2008-07-28)Attention to specific parameters can minimize inconsistency in source and receiver coupling thereby minimizing changes in spectral characteristics of time-lapse seismic data related to the near surface. This study concludes ... -
Characterizing aquifer heterogeneity using hydraulic tomography
(University of Kansas, 2008-07-29)Fine-scale heterogeneity in a geologic medium determines rates and directions of flow and of contaminant transport. Traditional methods of determining hydraulic conductivity provide only average values of hydraulic ...