Noble gases in CO2 well gas, Harding County, New Mexico

Hennecke, Edward W.; Manuel, Oliver

doi:10.1016/0012-821x(75)90047-3

Cited by 38 publications

(3 citation statements)

References 32 publications

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“…The rate and extent of this outgassing are uncertain, but measurement of the noble gas isotopes, 40Ar from 40K [half-life TI,, = 1250 million years (My)] [for example, (7,8)], 129Xe from 1291 (TlI2 = 16 My) [for example, (9, (T,,, = 82 My) [for example, (II)] offers a means to investigate these issues. Excesses of 129Xe relative to atmospheric Xe have been detected in CO, well gases from deposits in Harding County, New Mexico (12)(13)(14)(15)(16), and in other mantle-derived samples ( 1 7-25).…”

Section: Reportsmentioning

confidence: 99%

Primordial Noble Gases from Earth's Mantle: Identification of a Primitive Volatile Component

Caffee

Hudson

Velsko

et al. 1999

Science

113

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Carbon dioxide well gases in Colorado, New Mexico, and South Australia show excesses of (124-128)Xe correlated with (129)I-derived (129)Xe and (20)Ne/(22)Ne ratios that are higher than the atmospheric (20)Ne/(22)Ne ratio. The xenon isotopic data indicate the presence of a solarlike component deep within Earth. The presence of this component in crustal and upper mantle reservoirs may be explained by a steady-state transport of noble gases from the lower mantle, which still retains much of its juvenile volatile inventory. These measurements also indicate that the mantle source of these noble gases in the carbon dioxide well gases cannot be the source of Earth's present atmosphere. The variations observed in (129)Xe/(130)Xe between solar wind xenon, Earth's atmosphere, and mantle samples may be generated by variations of iodine/xenon in terrestrial reservoirs, as opposed to rapid early degassing.

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Section: Reportsmentioning

confidence: 99%

Primordial Noble Gases from Earth's Mantle: Identification of a Primitive Volatile Component

Caffee

Hudson

Velsko

et al. 1999

Science

113

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“…The isotopic composition of the noble gases and carbon at Bravo Dome and their gradients across the field have received considerable attention (32)(33)(34)(35)(36)(37). The high 3 He content of the gas indicates that it is of volcanic origin (33,35) and provides an important conservative tracer to evaluate local CO 2 dissolution based on changes in the CO 2 / 3 He ratio across the field.…”

mentioning

confidence: 99%

Constraints on the magnitude and rate of CO₂dissolution at Bravo Dome natural gas field

Sathaye

Hesse

Cassidy

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

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The injection of carbon dioxide (CO 2 ) captured at large point sources into deep saline aquifers can significantly reduce anthropogenic CO 2 emissions from fossil fuels. Dissolution of the injected CO 2 into the formation brine is a trapping mechanism that helps to ensure the long-term security of geological CO 2 storage. We use thermochronology to estimate the timing of CO 2 emplacement at Bravo Dome, a large natural CO 2 field at a depth of 700 m in New Mexico. Together with estimates of the total mass loss from the field we present, to our knowledge, the first constraints on the magnitude, mechanisms, and rates of CO 2 dissolution on millennial timescales. Apatite (U-Th)/He thermochronology records heating of the Bravo Dome reservoir due to the emplacement of hot volcanic gases 1.2-1.5 Ma. The CO 2 accumulation is therefore significantly older than previous estimates of 10 ka, which demonstrates that safe long-term geological CO 2 storage is possible. Integrating geophysical and geochemical data, we estimate that 1.3 Gt CO 2 are currently stored at Bravo Dome, but that only 22% of the emplaced CO 2 has dissolved into the brine over 1.2 My. Roughly 40% of the dissolution occurred during the emplacement. The CO 2 dissolved after emplacement exceeds the amount expected from diffusion and provides field evidence for convective dissolution with a rate of 0.1 g/(m 2 y). The similarity between Bravo Dome and major US saline aquifers suggests that significant amounts of CO 2 are likely to dissolve during injection at US storage sites, but that convective dissolution is unlikely to trap all injected CO 2 on the 10-ky timescale typically considered for storage projects.geological carbon storage | thermochronology | noble gases | porous media convection | carbon sequestration C arbon capture and storage has been identified as a potential technology for reductions in carbon dioxide (CO 2 ) emissions from coal-and natural gas-fired power plants. CO 2 that would otherwise be released into the atmosphere is captured at power plants and injected into porous geological formations for permanent storage. Carbon capture and storage has the potential for significant reductions of anthropogenic CO 2 emissions, because deep saline aquifers provide large storage volumes (1, 2) and existing operations have demonstrated that CO 2 injection and monitoring in saline aquifers are feasible (3).The leakage of CO 2 from the storage formation into potable aquifers or back into the atmosphere is an inherent risk of largescale geological CO 2 storage (4-6). Long-term storage security is therefore enhanced by physical and chemical processes that increasingly trap the injected CO 2 in the subsurface over time. Injected CO 2 can be trapped by capillary forces through the formation of disconnected ganglia or by precipitation as solid phases (7-9). Dissolution of CO 2 into the brine not only is a required first step for the subsequent permanent trapping in stable minerals, but also is considered a trapping mechanism itself. The density of the brin...

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“…The characteristic signatures of CFF-Xe were found in CO 2 well gas from Harding County, New Mexico [27][28][29][30] (Fig. 5).…”

Section: Nasa Author Manuscriptmentioning

confidence: 99%

New evidence for chemical fractionation of radioactive xenon precursors in fission chains

2016

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Mass-spectrometric analyses of Xe released from acid-treated U ore reveal that apparent Xe fission yields significantly deviate from the normal values. The anomalous Xe structure is attributed to chemically fractionated fission (CFF), previously observed only in materials experienced neutron bursts. The least retentive CFF-Xe isotopes, 136 Xe and 134 Xe, typically escape in 2:1 proportion. Xe retained in the sample is complimentarily depleted in these isotopes. This nucleochemical process allows understanding of unexplained Xe isotopic structures in several geophysical environments, which include well gasses, ancient anorthosite, some mantle rocks, as well as terrestrial atmosphere. CFF is likely responsible for the isotopic difference in Xe in the Earth's and Martian atmospheres and it is capable of explaining the relationship between two major solar system Xe carriers: the Sun and phase-Q, found in meteorites.

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Noble gases in CO2 well gas, Harding County, New Mexico

Cited by 38 publications

References 32 publications

Primordial Noble Gases from Earth's Mantle: Identification of a Primitive Volatile Component

Primordial Noble Gases from Earth's Mantle: Identification of a Primitive Volatile Component

Constraints on the magnitude and rate of CO₂dissolution at Bravo Dome natural gas field

New evidence for chemical fractionation of radioactive xenon precursors in fission chains

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Noble gases in CO2 well gas, Harding County, New Mexico

Cited by 38 publications

References 32 publications

Primordial Noble Gases from Earth's Mantle: Identification of a Primitive Volatile Component

Primordial Noble Gases from Earth's Mantle: Identification of a Primitive Volatile Component

Constraints on the magnitude and rate of CO2dissolution at Bravo Dome natural gas field

New evidence for chemical fractionation of radioactive xenon precursors in fission chains

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Constraints on the magnitude and rate of CO₂dissolution at Bravo Dome natural gas field