Geology: Recent submissions
Now showing items 61-80 of 479
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Interoperability between the StraboSpot graph database and GIS software– A Malpais Mesa Use Case
(University of Kansas, 2018-12-31)Geographic Information Systems (GIS) have been used by field geoscientists for decades to digitally collect data with several benefits: observations can be made in the field at a map independent scale while using multiple ... -
Basal thermal state of the Greenland Ice Sheet
(University of Kansas, 2018-12-31)Understanding the basal thermal state of the Greenland Ice Sheet (GrIS) has important implications for modeling its ongoing contribution to global sea level. Apart from removing paleoclimate information from basal layers, ... -
Construction and Exhumation of the Sierra Nevada Range: an investigation of geochronology, thermochronology and trace element mineral chemistry
(University of Kansas, 2018-12-31)This dissertation describes the development of the Sierra Nevada range from its construction as a magmatic arc to its current configuration as a significant tectonic block or microplate in the western North American ... -
CHARACTERIZING GROUNDWATER FLOW THROUGH MEROKARST, NORTHEAST KANSAS, USA
(University of Kansas, 2018-08-31)Karst aquifers are a significant source of groundwater supply worldwide, yet are known for unpredictable flow paths and rapid groundwater velocity. Characterizing the complex nature of karst aquifers though dye tracing is ... -
TWO NOVEL ICHNOSPECIES: LARGE-DIAMETER VERTEBRATE BURROWS IN THE UPPER JURASSIC MORRISON FORMATION, SOUTHEASTERN UTAH
(University of Kansas, 2018-08-31)Large-diameter structures in the Salt Wash Member, Upper Jurassic Morrison Formation in southeastern Utah, are interpreted as mammal burrows. All burrow types are found in pedogenically modified clayey mudstone overlain ... -
Landslide Hazard Assessment for Fayzabad District, Badakhshan Province, Afghanistan
(University of Kansas, 2018-08-31)Fayzabad District is one of those most impacted by landslide hazards in Afghanistan, accounting for 71% of all national landslide fatalities reported between 2012 and 2017. Necessary elevation data did not cover the very ... -
Hydrology, Fluid Flux, and Chemical Travel Times through the Vadose Zone at Ehmke Playa in the Central High Plains of Kansas
(University of Kansas, 2018-05-31)Groundwater levels of the High Plains aquifer (HPA) are declining in western Kansas, due mainly to large-scale irrigation pumping since the 1950s. Previous recharge rate estimates in the Central High Plains vary between 5 ... -
Preservation Potential of Permian Gypsum Beds, Nippewalla Group, USA
(University of Kansas, 2018-05-31)ABSTRACT During the Permian, what is now southern Kansas and northern Oklahoma was a drying inhospitable environment, as evidenced by the extensive red-beds and evaporites of the Nippewalla Group. Due to the fact that ... -
Ichnotaxonomy of the Eocene Green River Formation, Soldier Summit and Spanish Fork Canyon, Uinta Basin, Utah: Interpreting behaviors, lifestyles, and erecting the Cochlichnus Ichnofacies
(University of Kansas, 2018-05-31)The Eocene Green River Formation in the Uinta Basin, Utah, has a diverse ichnofauna. Nineteen ichnogenera and 26 ichnospecies were identified: Acanthichnus cursorius, Alaripeda lofgreni, c.f. Aquatilavipes isp., Aulichnites ... -
Diagenetic controls on porosity, thermal history, and hydrocarbons in the Wolfcamp A, eastern Midland Basin, Texas
(University of Kansas, 2018-05-31)A detailed study of a Wolfcamp A core from the eastern Midland Basin, west Texas, is used to understand the diagenetic history of the region and the controls on carbonate macroporosity. Transmitted-light microscopy, ... -
Biodiversity and Evolutionary Relationships of Early Mesozoic Ray-Finned Fishes (Actinopterygii)
(University of Kansas, 2017-12-31)Fishes have evolved to exploit multiple ecological niches. Extant fishes in both marine (e.g., rabbitfishes, surgeonfishes) and freshwater systems (e.g., haplochromine cichlids, characiforms) have evolved specialized, ... -
Late Triassic North American Paleodrainage Networks and Sediment Dispersal of the Chinle Formation: A Quantitative Approach Utilizing Detrital Zircons
(University of Kansas, 2018-12-31)The Upper Triassic Chinle Formation is a succession of fluvial strata deposited in a backarc setting across the present-day Colorado Plateau of the southwestern United States. This study uses detrital-zircon (DZ) U-Pb data ... -
Implications for large-scale sea level change in the Turonian Western Interior Seaway: Evidence from the Codell Sandstone, Colorado
(University of Kansas, 2014-08-31)Middle to Upper Turonian strata of the Cretaceous Western Interior Seaway record evidence of a large-scale sea level change. The Codell Sandstone Member of the Carlile Shale, exposed in the Pueblo, Colorado area, consists ... -
Savor the Cyrosphere
(Geological Society of America, 2017-03-30)This article provides concise documentation of the ongoing retreat of glaciers, along with the implications that the ice loss presents, as well as suggestions for geoscience educators to better convey this story to both ... -
Development of Tools and Methods for the Characterization of the Groundwater-Surface Water Interface
(University of Kansas, 2018-05-31)This study focuses on water exchange, and associated processes, at the groundwater-surface water interface (GWSWI). The contributions of the study, as a whole, can be divided into two groups: scientific contributions and ... -
Variability in Bioavailable 87Sr/86Sr in the North American Midcontinent
(Ubiquity Press, 2017-06-07)Strontium (Sr) isotope tracers are useful for understanding provenance and mobility in biological materials across multiple disciplines. However, the impact of these techniques is highly dependent on the construction of ... -
Predicting the Geothermal Heat Flux in Greenland: A Machine Learning Approach
(American Geophysical Union, 2017-12-26)Geothermal heat flux (GHF) is a crucial boundary condition for making accurate predictions of ice sheet mass loss, yet it is poorly known in Greenland due to inaccessibility of the bedrock. Here we use a machine learning ... -
Shear-wave anisotropy reveals pore fluid pressure–induced seismicity in the U.S. midcontinent
(American Association for the Advancement of Science, 2017-12-13)Seismicity in the U.S. midcontinent has increased by orders of magnitude over the past decade. Spatiotemporal correlations of seismicity to wastewater injection operations have suggested that injection-related pore fluid ... -
Characterizing the Potential for Injection-Induced Fault Reactivation Through Subsurface Structural Mapping and Stress Field Analysis, Wellington Field, Sumner County, Kansas
(American Geophysical Union, 2017-12-13)Kansas, like other parts of the central U.S., has experienced a recent increase in seismicity. Correlation of these events with brine disposal operations suggests pore fluid pressure increases are reactivating preexisting ... -
Subglacial discharge‐driven renewal of tidewater glacier fjords
(American Geophysical Union, 2017-08-24)The classic model of fjord renewal is complicated by tidewater glacier fjords, where submarine melt and subglacial discharge provide substantial buoyancy forcing at depth. Here we use a suite of idealized, high‐resolution ...