Preliminary Evaluation of Cenozoic Basins in Arizona for Carbon Dioxide Sequestration Potential
KeywordsArizona Geological Survey Open File Reports
Basin and Range Province
depth to bedrock
Department of Energy
Arizona Geological Characterization
MetadataShow full item record
CitationSpencer, J.E., 2011, Preliminary Evaluation of Cenozoic Basins in Arizona for Carbon Dioxide Sequestration Potential. Arizona Geological Survey Open File Report, OFR-11-05, 14 p.
DescriptionThe U.S. Department of Energy (DOE), through its National Energy Technology Laboratory (NETL), established a national program to evaluate the feasibility of separating carbon dioxide (CO2) from industrial sources and pumping it underground for long-term storage or disposal. This program was established in response to concerns that CO2 emissions from fossil-fuel combustion, and from other industrial processes such as cement production from limestone, are increasing atmospheric CO2 concentration and solar-energy absorption, thereby causing global warming. Carbon dioxide removal from industrial sources and storage in geologic reservoirs is known as “geologic sequestration.” A major aspect of the DOE program is to evaluate subsurface geology to determine the potential of underground rock formations for long-term CO2 sequestration. WESTCARB (West Coast Regional Carbon Sequestration Partnership) is a consortium of seven western U.S. States and one Canadian Province that is one of seven regional North American partnerships established to evaluate technical aspects of high-volume CO2 capture and sequestration. Collaborative WESTCARB research programs have included more than 90 public agencies, private companies, and non-profit organizations. The Arizona Geological Survey began work in 2010 on WESTCARB Phase III – Arizona Geological Characterization. This report represents an initial WESTCARB assessment of CO2 storage potential in Arizona’s Cenozoic basins, and is part of Task 2 of Arizona WESTCARB Phase III (California Energy Commission Agreement Number 500-10-024). The focus of this study is Cenozoic basin volume and volume below 800m depth, with the purpose of reducing the number of basins subjected to further carbon-sequestration evaluation. Basin volume below 800m depth is important because CO2 will remain in a liquid state at pressures corresponding to rock overburden at such depths. Successful sequestration requires both adequate permeability and porosity for large-volume CO2 injection, and an impermeable cap rock that will prevent movement of CO2 to shallower depth and escape to the atmosphere. Basin stratigraphy and sediment characteristics are not the subject of this report, however, but will be evaluated for a subset of basins identified in this study that are both large and deep.
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North Bounding Coordinate37.0665
South Bounding Coordinate31.3282
West Bounding Coordinate-114.895
East Bounding Coordinate-108.962
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Determining Areal Precipitation in the Basin and Range Province of Southern Arizona - Sonoita Creek BasinBen-Asher, J.; Randall, J.; Resnick, S.; Water Resources Research Center, University of Arizona, Tucson, Arizona 85721 (Arizona-Nevada Academy of Science, 1976-05-01)A linear relationship between point precipitation and elevation in conjunction with a computer four-point interpolation technique was used to simulate areal rainfall over Sonoita Creek Basin, Arizona. The simulation's sensitivity and accuracy were checked against the official isohyetal map of Arizona (Univ. of Arizona, 1965) by changing the density of the interpolation nodes. The simulation was found to be in good agreement with the official map. The average areal-rainfall was calculated by integration. Cumulative rainfall amounts were assumed to be stochastically independent from one season to another. The seasonal precipitations of forty years (1932-1972) were subdivided into five groups. to check for binomial distribution. The binomial model fits the historical data adequately. The binomial model for cumulative seasonal areal-precipitation provides one way to compute the return period. This information will be necessary for decision-makers and hydrologists to predict the area's future water balance.
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