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Fluid-mineral reactions and trace metal mobilisation in an exhumed natural CO2 reservoir, Green River, Utah

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Fluid-mineral reactions and trace metal mobilisation in an exhumed natural CO2 reservoir, Green River, Utah. / Wigley, Max; Kampman, Niko; Dubacq, Benoit et al.
In: Geology, Vol. 40, No. 6, 2012, p. 555-558.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Wigley, M, Kampman, N, Dubacq, B & Bickle, M 2012, 'Fluid-mineral reactions and trace metal mobilisation in an exhumed natural CO2 reservoir, Green River, Utah', Geology, vol. 40, no. 6, pp. 555-558. https://doi.org/10.1130/g32946.1

APA

Wigley, M., Kampman, N., Dubacq, B., & Bickle, M. (2012). Fluid-mineral reactions and trace metal mobilisation in an exhumed natural CO2 reservoir, Green River, Utah. Geology, 40(6), 555-558. https://doi.org/10.1130/g32946.1

Vancouver

Wigley M, Kampman N, Dubacq B, Bickle M. Fluid-mineral reactions and trace metal mobilisation in an exhumed natural CO2 reservoir, Green River, Utah. Geology. 2012;40(6):555-558. doi: 10.1130/g32946.1

Author

Wigley, Max ; Kampman, Niko ; Dubacq, Benoit et al. / Fluid-mineral reactions and trace metal mobilisation in an exhumed natural CO2 reservoir, Green River, Utah. In: Geology. 2012 ; Vol. 40, No. 6. pp. 555-558.

Bibtex

@article{ee4e75201a4e4aaeb98b77d278800a2f,
title = "Fluid-mineral reactions and trace metal mobilisation in an exhumed natural CO2 reservoir, Green River, Utah",
abstract = "Red sandstones near Green River, Utah (United States), have been bleached by diagenetic fluids. Field relationships, modeling, fluid inclusion and isotopic data suggest that the causal fluid was a CO2-charged brine, distinguishing this site from hydrocarbon-related bleaching elsewhere on the Colorado Plateau. Mineralogical and chemical profiles from unbleached to bleached sandstone show that bleaching is related to hematite dissolution and precipitation of a 1–2 cm band of secondary oxide and carbonate at the reaction front. Trace metals are mobilized by the fluid and concentrated near the reaction front. High-flux fluid pathways are more heavily altered with large-scale secondary calcite and iron oxide precipitation. Changes may be modeled by a reaction with stoichiometry 20Fe2O3 + 5CH4 + 64CO2 + 19H2O + 11H+ = 30Fe2+ + 10FeHCO3+ + 59HCO3–. The Fe-rich, reduced fluid precipitates iron-oxides and carbonate at the reaction front between bleached and unbleached sandstone. These findings make the site an analogue for processes occurring over long time scales in geological carbon storage projects. Trace metals moblized by CO2-charged brines are likely to be rapidly re-precipitated at reaction fronts.",
author = "Max Wigley and Niko Kampman and Benoit Dubacq and Mike Bickle",
year = "2012",
doi = "10.1130/g32946.1",
language = "English",
volume = "40",
pages = "555--558",
journal = "Geology",
issn = "0091-7613",
publisher = "Geological Society of America",
number = "6",

}

RIS

TY - JOUR

T1 - Fluid-mineral reactions and trace metal mobilisation in an exhumed natural CO2 reservoir, Green River, Utah

AU - Wigley, Max

AU - Kampman, Niko

AU - Dubacq, Benoit

AU - Bickle, Mike

PY - 2012

Y1 - 2012

N2 - Red sandstones near Green River, Utah (United States), have been bleached by diagenetic fluids. Field relationships, modeling, fluid inclusion and isotopic data suggest that the causal fluid was a CO2-charged brine, distinguishing this site from hydrocarbon-related bleaching elsewhere on the Colorado Plateau. Mineralogical and chemical profiles from unbleached to bleached sandstone show that bleaching is related to hematite dissolution and precipitation of a 1–2 cm band of secondary oxide and carbonate at the reaction front. Trace metals are mobilized by the fluid and concentrated near the reaction front. High-flux fluid pathways are more heavily altered with large-scale secondary calcite and iron oxide precipitation. Changes may be modeled by a reaction with stoichiometry 20Fe2O3 + 5CH4 + 64CO2 + 19H2O + 11H+ = 30Fe2+ + 10FeHCO3+ + 59HCO3–. The Fe-rich, reduced fluid precipitates iron-oxides and carbonate at the reaction front between bleached and unbleached sandstone. These findings make the site an analogue for processes occurring over long time scales in geological carbon storage projects. Trace metals moblized by CO2-charged brines are likely to be rapidly re-precipitated at reaction fronts.

AB - Red sandstones near Green River, Utah (United States), have been bleached by diagenetic fluids. Field relationships, modeling, fluid inclusion and isotopic data suggest that the causal fluid was a CO2-charged brine, distinguishing this site from hydrocarbon-related bleaching elsewhere on the Colorado Plateau. Mineralogical and chemical profiles from unbleached to bleached sandstone show that bleaching is related to hematite dissolution and precipitation of a 1–2 cm band of secondary oxide and carbonate at the reaction front. Trace metals are mobilized by the fluid and concentrated near the reaction front. High-flux fluid pathways are more heavily altered with large-scale secondary calcite and iron oxide precipitation. Changes may be modeled by a reaction with stoichiometry 20Fe2O3 + 5CH4 + 64CO2 + 19H2O + 11H+ = 30Fe2+ + 10FeHCO3+ + 59HCO3–. The Fe-rich, reduced fluid precipitates iron-oxides and carbonate at the reaction front between bleached and unbleached sandstone. These findings make the site an analogue for processes occurring over long time scales in geological carbon storage projects. Trace metals moblized by CO2-charged brines are likely to be rapidly re-precipitated at reaction fronts.

UR - http://www.scopus.com/inward/record.url?scp=84864301404&partnerID=8YFLogxK

U2 - 10.1130/g32946.1

DO - 10.1130/g32946.1

M3 - Journal article

AN - SCOPUS:84864301404

VL - 40

SP - 555

EP - 558

JO - Geology

JF - Geology

SN - 0091-7613

IS - 6

ER -