Screening Geologic Sinks for CO 2 in Nevada Jon Price Nevada Bureau of Mines and Geology
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Transcript of Screening Geologic Sinks for CO 2 in Nevada Jon Price Nevada Bureau of Mines and Geology
Screening Geologic Sinks for CO2 in Nevada
Jon PriceNevada Bureau of Mines and Geology
“Preliminary Assessment of the Potential for Carbon Dioxide Disposal by Sequestration in Geological Settings in Nevada”
Jonathan G. Price, Ronald H. Hess, Shane Fitch, James E. Faulds, Larry J. Garside, Lisa Shevenell, Sean Warren
Nevada Bureau of Mines and Geology Report XYZ
Conclusion: not much potential in Nevada
Conceptual model – Nevada oil and deep brine aquifers
Yes: White = alluvial deposits
No: Gray = bedrock
Blue = lakes
ES = bottom-hole temperature (93°C at 1,830 m) in the Eagle Springs oil field
BF = reservoir temperature (120-130°C at about 1,625 m) in the Bacon Flat-Grant Canyon oil fields
Depths greater than 1 km are preferred in Nevada, because of the high geothermal gradient and the need for a dense fluid CO2 phase.
Yes: White = alluvial basins deeper than 1 km
No: Gray = other areas
Buffers around Quaternary-active normal and strike-slip faults
Yes: White = areas not near active faults
No: Gray = areas near active faults
‘49ers
Goldfield, Cripple Creek, and porphyries
Carlin and other Nevada deposits
We are in the midst of the biggest gold boom in American history.
Epithermal Pluton-related Non-pluton-related
Combined
White = areas not permissive for metal deposits
Gray = areas the USGS determined to be permissive for metal deposits
Yes: White = areas outside 5-km buffer around known mineral deposits (in USGS and NBMG databases) and including mining districts
No: Gray = areas with likely mineral-resource development
Known gold-silver deposits are mostly within 5 km of USGS historical mines.
Yes: White = areas outside 20-km buffer around known geothermal resourcesNo: Gray = areas with potential for geothermal development
No: Gray = area underlain by the Deep Carbonate Aquifer
Yes: White = areas unlikely to undergo urban development in the 21st century
No: Gray (green) = areas within 10 km of a town or major highway connecting cities or within 30 km of a current urban center
Yes: White = areas where permission may be granted
No: Gray = Parks, National Recreation Areas, Wilderness Areas, Military Reservations, Nevada Test Site
Combined map taking into account basin depth; faults; areas with potential for mineral, geothermal, and water-resource development; and proximity to potential urban areas.
Yes: White = areas not otherwise eliminated from consideration
No: Gray = most of Nevada
Conclusion: not much potential for conventional CO2 sequestration
Granite Springs Valley, Pershing County
Distribution of mafic (magnesium- and iron-rich) rocks, major electric power transmission lines, and railroads in Nevada.
Other Considerations:
Chemical reactors with mafic or ultramafic rocks (black areas) – industrial ecology with power plants and landfills near railroads
Solution-mined salt caverns
Basalt: 5.2 km3 Carbon: 1 Gt Waste: 8.5 km3
Screening Geologic Sinks for CO2 in Nevada
Jon PriceNevada Bureau of Mines and Geology
www.nbmg.unr.edu
[email protected]: not much potential for conventional CO2 sequestration in Nevada