Department

Geology and Geophysics

Description

Geologic carbon sequestration is being reviewed as a viable means to help reduce anthropogenic carbon dioxide in the atmosphere. Wyoming possesses at least eight natural analogues wherein CO 2 has accumulated for a geologically significant amount of time. Natural CO 2 analogues provide a means of understanding and predicting behavior in carbon repositories, particularly as test beds for investigating and improving technologies and protocols aimed at assessing the in tegrity of caprock formations. Successful measurement of CO 2 and Rn emissions on active volcanoes demonstrates the viability of a geochemical tool to relate CO 2 emissions to source regions such as deep reservoir versus shallow soil CO 2 flux, and the mechan ism of gas transport toward the surface. A transect was completed along Muddy Creek Road south of LaBarge, Wyoming capturing three main zones in relation to background gamma radiation and CO 2 flux of the region. Moving west away from LaBarge CO 2 Field, CO 2 flux and 220 Rn/ 222 Rn ratio relatively increases as a result of tectonic activity in the region. Future research will be required to truly determine the sample variance between the relation of CO 2 flux and Rn gas ratio to the tectonic activity.

Comments

Oral Presentation, Wyoming NSF EPSCoR

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A Disease of the Other

Geologic carbon sequestration is being reviewed as a viable means to help reduce anthropogenic carbon dioxide in the atmosphere. Wyoming possesses at least eight natural analogues wherein CO 2 has accumulated for a geologically significant amount of time. Natural CO 2 analogues provide a means of understanding and predicting behavior in carbon repositories, particularly as test beds for investigating and improving technologies and protocols aimed at assessing the in tegrity of caprock formations. Successful measurement of CO 2 and Rn emissions on active volcanoes demonstrates the viability of a geochemical tool to relate CO 2 emissions to source regions such as deep reservoir versus shallow soil CO 2 flux, and the mechan ism of gas transport toward the surface. A transect was completed along Muddy Creek Road south of LaBarge, Wyoming capturing three main zones in relation to background gamma radiation and CO 2 flux of the region. Moving west away from LaBarge CO 2 Field, CO 2 flux and 220 Rn/ 222 Rn ratio relatively increases as a result of tectonic activity in the region. Future research will be required to truly determine the sample variance between the relation of CO 2 flux and Rn gas ratio to the tectonic activity.