A5069594713- Coal and Its By-products
- Hydrocarbon exploration and reservoir analysis
- Coal Properties and Utilization
- Atmospheric and Environmental Gas Dynamics
- CO2 Sequestration and Geologic Interactions
- Methane Hydrates and Related Phenomena
- Coal and Coke Industries Research
- Geochemistry and Geologic Mapping
- Geology and Paleoclimatology Research
- Geological formations and processes
- Geological Modeling and Analysis
- Archaeology and Natural History
- Geological Studies and Exploration
- African history and culture studies
- Reservoir Engineering and Simulation Methods
- South African History and Culture
- Mineralogy and Gemology Studies
- Geological and Geochemical Analysis
- Enhanced Oil Recovery Techniques
- Paleontology and Stratigraphy of Fossils
- Heavy metals in environment
- Botany, Ecology, and Taxonomy Studies
- Fire effects on ecosystems
- Mineral Processing and Grinding
- Plant Diversity and Evolution
United States Geological Survey
2014-2025
Geology, Energy and Minerals Science Center
2023
United States Department of the Interior
2012-2023
Dwight Englewood School
2012-2018
Entertainment Industries Council
2012-2015
National Energy Technology Laboratory
2014
Clarion University
2014
Griffith University
2012
University of Kentucky
1985
University of York
1975
Coal is increasingly evaluated as a source of rare earth elements (REEs) in the United States to address overreliance on imported REEs. The objective this study was assess distribution REEs lignites from selected mining areas Texas Gulf Coastal Plain region. Thirty-one archived lignite and rock samples previously collected by U.S. Geological Survey were analyzed for their element critical mineral content. These include one core (5400 5500 horizons) two opencast mines (Gibbons Creek 3500 4500...
In response to the 2007 Energy Independence and Security Act, U.S. Geological Survey (USGS) conducted a national assessment of potential geologic storage resources for carbon dioxide (CO2). Storage CO2 in subsurface saline formations is one important method reduce greenhouse gas emissions curb global climate change. This report provides updates implementation details methodology Brennan others (2010, http://pubs.usgs.gov/of/2010/1127/) describes probabilistic model used calculate formations.
To investigate the potential for mobilizing organic compounds from coal beds during geologic carbon dioxide (CO2) storage (sequestration), a series of solvent extractions using dichloromethane (DCM) and supercritical CO2 (40 °C 10 MPa) were conducted on set samples collected Louisiana Ohio. The studied range in rank lignite A to high volatile bituminous, characterized proximate, ultimate, petrography, sorption isotherm analyses. Sorption analyses gaseous methane show general increase gas...
<title>Abstract</title> United States heavy reliance on imports of critical minerals (CMs), including rare earth elements (REEs), underscores the importance development domestic sources. The study objective was to quantify CM and REE concentrations in coals US Gulf Coast region. were measured for 118 samples from outcrops 14 mines Coast. Results show that total REE+Yttrium (REY) (dry coal basis) are comparable those upper continental crust (UCC) with localized hot spots, such as Texas...
Emission monitoring at the facility level (bottom-up, BU) is key for accurate reporting of coal mine methane (CMM) emissions. Recent advances in aerial and satellite observations (top-down, TD) indicate that these methods have potential to support CMM emissions of, as well track effectiveness mitigation actions. That said, studies shown discrepancies between BU TD estimations. Performing with concurrent measurements same mines may help address observed improve quantification narrow gap data....
Research Article| July 01, 2010 Coupled hydrology and biogeochemistry of Paleocene–Eocene coal beds, northern Gulf Mexico Jennifer C. McIntosh; McIntosh † 1Department Hydrology Water Resources, U.S. Geological Survey Adjunct Geologist, University Arizona, Tucson, Arizona 85721, USA †E-mail: mcintosh@hwr.arizona.edu Search for other works by this author on: GSW Google Scholar Peter D. Warwick; Warwick § 2U.S. Survey, 956 National Center, Reston, Virginia 20192, §E-mail: pwarwick@usgs.gov Anna...
Following the withdrawal of IFRIC 3: Emissions Rights in 2005, European Union (EU) companies participating an Trading Scheme (ETS) do not have definitive guidelines as to how account for carbon emissions allowances. Using a content analysis methodology, this study examines disclosed accounting policies EU ETS, and reveals how, absence clear guidance, they their As method adopted will impact upon company's financial statements, these findings are interest standards setters, investors,...
Stimulating in situ microbial communities oil reservoirs to produce natural gas is a potentially viable strategy for recovering additional fossil fuel resources following traditional recovery operations. Little known about what geochemical parameters drive population dynamics biodegraded, methanogenic reservoirs. We investigated if community structure was significantly impacted by the extent of crude biodegradation, biogenic methane production, and formation water chemistry. Twenty-two...
The South African War was a costly and bitterly contested struggle. It fought in region populated by five million people, four of whom were black. This is the first history war to focus upon wartime experiences black examine context complex rapidly changing colonial society increasingly shaped, but not yet transformed, mining capital. ways which influenced lives livelihoods different sections population are studied - from chiefs newspaper editors peasant farmers artisans, farm tenants...
Rising atmospheric carbon dioxide (CO2) concentrations are fueling anthropogenic climate change. Geologic sequestration of CO2 in depleted oil reservoirs is one option for reducing emissions to the atmosphere while enhancing recovery. In order evaluate feasibility using enhanced recovery (EOR) sites United States permanent storage, an active multi-stage miscible flooding project Permian Basin (North Ward Estes Field, near Wickett, Texas) was investigated. addition, two major natural...
Depositional controls on peat-forming environments which produce thick (>10m) coal beds can be inferred from relationships between bed geometry, maceral composition and associated lithologies. Study of these within sedimentary sequences with the Wyodak-Anderson (Palaeocene) Felix (Eocene) sub-bituminous in Powder River Basin, Wyoming, USA suggests two modes fluvially controlled peat accumulation. The is interpreted to have formed restricted parts floodplain that were separated by deposits...