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Geology: Recent submissions
Now showing items 321-340 of 480
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Entrapment of Bacteria in Fluid Inclusions in Laboratory-Grown Halite
(Mary Ann Liebert, 2006-08-17)Cells of the bacterium Pseudomonas aeruginosa, which were genetically modified to produce green fluorescent protein, were entrapped in fluid inclusions in laboratory-grown halite. The bacteria were used to inoculate ... -
Improving Resolution and Understanding Controls on GPR Response in Carbonate Strata: Implications for Attribute Analysis
(Society of Exploration Geophysicists, 2007-08-01)For more than a decade, environmental, engineering, groundwater, and shallow stratigraphic studies have demonstrated and advanced the usefulness of ground-penetrating radar (GPR) in lithified and unconsolidated sedimentary ... -
4D Seismic to Image a Thin Carbonate Reservoir During a Miscible CO2 Flood: Hall-Gurney Field, Kansas, USA
(Society of Exploration Geophysicists, 2005-05-01)The movement of miscible CO2 injected into a shallow (900 m) thin (3.6-6m) carbonate reservoir was monitored using the high-resolution parallel progressive blanking (PPB) approach. The approach concentrated on repeatability ... -
The biogeochemistry of tropical lakes: A case study from Lake Matano, Indonesia
(Association for the Sciences of Limnology and Oceanography, 2008-01-16)We examined the chemical composition of the water column of Lake Matano, Sulawesi Island, Indonesia, to document how the high abundances of Fe (hydr)oxides in tropical soils and minimal seasonal temperature variability ... -
Mixing and its effects on biogeochemistry in the persistently stratified, deep, tropical Lake Matano, Indonesia
(Association for the Sciences of Limnology and Oceanography, 2009-09-24)In the > 590-m deep, tropical Lake Matano (Indonesia), stratification is characterized by weak thermal gradients (< 2°C per 500 m) and weak salinity gradients (< 0.14% per 500 m). These gradients persist over seasons, ... -
Biogeochemistry of manganese in Lake Matano, Indonesia
(European Geosciences Union, 2011-10-26)This study explores Mn biogeochemistry in a stratified, ferruginous lake. Intense Mn cycling occurs in the chemocline where Mn is recycled at least 15 times before sedimentation. The kinetics of Mn oxidation in Lake Matano ... -
Microbial and Geochemical Characterization of Wellington Oil Field, Southcentral Kansas, and Potential Applications to Microbial Enhanced Oil Recovery
(University of Kansas, 2014-08-31)The aqueous geochemistry and microbiology of subsurface environments are intimately linked and in oil reservoir fluids. This interdependence may result in a number of processes including biodegradation of oil, corrosion ... -
Integrated tectonic and quantitative thermochronometric investigation of the Xainza rift, Tibet
(University of Kansas, 2014-08-31)The Himalayan Tibetan orogeny is a superlative in many respects and has drawn a lot of attention because of its unrivaled landscape and geologic attractiveness. Many processes including ocean-continent and continent-continent ... -
Swept impact seismic technique (SIST)
(Society of Exploration Geophysicists, 1996-11-01)A coded seismic technique is developed that can result in a higher signal-to-noise ratio than a conventional single-pulse method does. The technique is cost-effective and time-efficient and therefore well suited for ... -
Suppression of dominant topographic overprints in gravity data by adaptive filtering: southern Wyoming Province
(Wiley, 1992-09-10)In areas of the world with a protracted tectonic history, the gravity field may be dominated by anomalies due to individual structural features developed during the latest tectonic event. These individual tectonic features ... -
Seismic Reflection Studies in Long Valley Caldera, Califomia
(Wiley, 1991-03-10)Seismic reflection studies in Long Valley caldera, California, indicate that seismic methods may be successfully employed to image certain types of features in young silicic caldera environments. However, near-surface ... -
Seismic reflection analysis of the Manson Impact Structure, Iowa
(Wiley, 1996-03-10)Our combined interpretation of new, high-resolution seismic reflection data and reprocessed, but previously published, industrial Vibroseis data indicates that the Manson Impact Structure, Iowa, has an apparent crater ... -
Mapping bedrock beneath glacial till using CDP seismic reflection methods
(Wiley, 1994-03-01)This paper is a case history demonstrating the applicability of the common depth point (CDP) seismic reflection method to image bedrock beneath glacial till in northwestern Iowa. Reflections from the base of the 40-m thick ... -
Field Investigation of Nutrient Pulse Mixing in an in Situ Biostimulation Experiment
(Wiley, 1996-04)A permeable wall was installed in a shallow,uncontaminated portion of the Borden aquifer,and periodically flushed with a solution of potassium acetate.The acetate pulses were injected at intervals of 5-7 weeks and were ... -
Hydrogeologic assessment of in situ natural attenuation in a controlled field experiment
(Wiley, 2002-01-16)An experiment to investigate the natural attenuation of three volatile organic compounds, toluene, carbon tetrachloride, and tetrachloroethene (∼1–10 mg L−1) was performed in a 3 m deep, sandy aquifer isolated within a 24 ... -
Field comparison of the point velocity probe with other groundwater velocity measurement methods
(Wiley, 2009-03-14)Field testing of a new tool for measuring groundwater velocities at the centimeter scale, the point velocity probe (PVP), was undertaken at Canadian Forces Base, Borden, Ontario, Canada. The measurements were performed in ... -
Ground-penetrating radar observations of enhanced biological activity in a sandbox reactor
(Wiley, 2010-07-27)In this study, we evaluate the use of ground-penetrating radar (GPR) to investigate the effects of bacterial activity in water saturated sand. A 90-day laboratory-scale controlled experiment was conducted in a flow-through ... -
Plasticity of the Dakota Clays of Kansas
(University of Kansas, 1915-06-01) -
Hydrogeologic Controls on Bioactive Zone Development in Biostimulated Aquifers
(University of Kansas, 2012-05-31)This study investigates the hydrogeological factors that control the feedback between bioactive zone formation and groundwater flow, as well as developing and assessing tools useful for making these investigations. The ... -
Viewing paleontology through a geochemical lens: 2 case studies
(University of Kansas, 2013-08-31)Geochemistry has become increasingly important to the field of paleontology. This thesis comprises two geochemical case studies examining questions at very different scales. The first examines possible controls on the ...