Evolution of the geothermal fluids at Los Azufres, Mexico, as traced by noble gas isotopes, δ18O, δD, δ13C and 87Sr/86Sr

Pinti, Daniele L.; Castro, Maria Clara; Shouakar-Stash, Orfan; Tremblay, Alain; Garduño, Víctor Hugo; Hall, Chris M.; Hélie, Jean‐François; Ghaleb, Bassam

doi:10.1016/j.jvolgeores.2012.09.006

Cited by 46 publications

(42 citation statements)

References 52 publications

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“…Consequently they can be used to interpret the physical processes which are often poorly constrained by other, more reactive, tracers. For example noble gases have proven their potential in topics as diverse as understanding the source, migration and sinks of fluids throughout the crust (e.g., Ballentine et al, 2002; http Brennwald et al, 2013;Pinti et al, 2013) through to aiding our understanding of the origin and evolution of our planet (e.g., Holland et al, 2009;Marty, 2012;Halliday, 2013).…”

Section: Introductionmentioning

confidence: 99%

Determining noble gas partitioning within a CO2–H2O system at elevated temperatures and pressures

Warr

Rochelle

Masters

et al. 2015

Geochimica et Cosmochimica Acta

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Quantifying the distribution of noble gases between phases is essential for using these inert trace gases to track the processes controlling multi-phase subsurface systems. Here we present experimental data that defines noble gas partitioning for two phase CO 2 -water systems. These are at the pressure and temperature range relevant for engineered systems used for anthropogenic carbon capture and geological storage (CCS) technologies, and CO 2 -rich natural gas reservoirs (CO 2 density range 169-656 kg/m 3 at 323-377 K and 89-134 bar). The new partitioning data are compared to predictions of noble gas partitioning determined in low-pressure, pure noble gas-water systems for all noble gases except neon and radon. At low CO 2 density there was no difference between measured noble gas partitioning and that predicted in pure noble gas-water systems. At high CO 2 density, however, partition coefficients express significant deviation from pure noble gas-water systems. At 656 kg/m 3 , these deviations are À35%, 74%, 113% and 319% for helium, argon, krypton and xenon, respectively. A second order polynomial fit to the data for each noble gas describes the deviation from the pure noble gas-water system as a function of CO 2 density. We argue that the difference between pure noble gas-water systems and the high density CO 2 -water system is due to an enhanced degree of molecular interactions occurring within the dense CO 2 phase due to the combined effect of inductive and dispersive forces acting on the noble gases. As the magnitude of these forces are related to the size and polarisability of each noble gas, xenon followed by krypton and argon become significantly more soluble within dense CO 2 . In the case of helium repulsive forces dominate and so it becomes less soluble as a function of CO 2 density.

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Section: Introductionmentioning

confidence: 99%

Determining noble gas partitioning within a CO2–H2O system at elevated temperatures and pressures

Warr

Rochelle

Masters

et al. 2015

Geochimica et Cosmochimica Acta

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“…The average elevation of the Los Azufres geothermal field is 2750 masl (meters above sea level). Using the elevation‐boiling point calculator, the boiling point of water at Los Azufres is 91°C (Table ).…”

Section: Resultsmentioning

confidence: 99%

Inter‐laboratory test for oxygen and hydrogen stable isotope analyses of geothermal fluids: Assessment of reservoir fluid compositions

Verma

Geldern

Barth

et al. 2018

Rapid Comm Mass Spectrometry

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The measured and calculated δ O and δ H values of water sampled at the weir box, separator and wellhead of geothermal wells suggest the existence of hydrogen and oxygen isotope-exchange equilibrium between the liquid and vapor phases at all sampling points in the well. Thus, both procedures for calculating the isotopic compositions of the deep geothermal reservoir fluid - using either the analytical data of the liquid phase at the weir box together with those of vapor at the separator or the analytical data of liquid and vapor phases at the separator -are equally valid.

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“…Hydrothermal activity is sustained with the direct rise of a "pristine" geothermal liquid and vapor phase to the surface at temperatures of 88-91°C (Birkle et al, 2001;Gonzales-Partida et al, 2005). Fluids are highly mineralized (Birkle et al, 2001) and contain almost pure mantle helium with a measured 3 He/ 4 He ratio of 7.0 Ra (where Ra is the atmospheric ratio) (Pinti et al, 2013).…”

Section: Geology Of the Studied Areamentioning

confidence: 99%

“…1b). In January 2009, an extensive geochemical survey of fumaroles, thermal springs and geothermal wells were carried out in order to further understand the evolution of the field during its continuous exploitation (Pinti et al, 2013). Marítaro is the most active hydrothermal area of the entire field and the discharge of its hot springs produce large hydrothermal deposits (Fig.…”

Section: Introductionmentioning

confidence: 99%

Radium depletion and 210Pb/226Ra disequilibrium of Mar^|^iacute;taro hydrothermal deposits, Los Azufres geothermal field, Mexico

et al. 2012

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Evolution of the geothermal fluids at Los Azufres, Mexico, as traced by noble gas isotopes, δ18O, δD, δ13C and 87Sr/86Sr

Cited by 46 publications

References 52 publications

Determining noble gas partitioning within a CO2–H2O system at elevated temperatures and pressures

Determining noble gas partitioning within a CO2–H2O system at elevated temperatures and pressures

Inter‐laboratory test for oxygen and hydrogen stable isotope analyses of geothermal fluids: Assessment of reservoir fluid compositions

Radium depletion and 210Pb/226Ra disequilibrium of Mar^|^iacute;taro hydrothermal deposits, Los Azufres geothermal field, Mexico

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