Cited by 51Geological and Geochemical AnalysisGeochemistry and Elemental AnalysisCO2 Sequestration and Geologic Interactions

Syn-tectonic, meteoric water-derived carbonation of the New Caledonia peridotite nappe

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Quesnel, Benoît, Gautier, Pierre, Boulvais, Philippe, Cathelineau, Michel, Maurizot, Pierre, Cluzel, Dominique, Ulrich, Marc, Guillot, Stéphane +2 more·2013·Geology

Abstract

Exceptional outcrops recently exposed in the Koniambo massif allow the study of the serpentine sole of the peridotite nappe of New Caledonia (southwest Pacific Ocean). Many magnesite veins are observed, with characteristics indicating that they were emplaced during pervasive top-to-the-southwest shear deformation. The oxygen isotope composition of magnesite is homogeneous (27.4‰ < δ18O < 29.7‰), while its carbon isotope composition varies widely (−16.7‰ < δ13C < −8.5‰). These new data document an origin of magnesite from meteoric fluids. Laterization on top of the peridotite nappe and carbonation along the sole appear to represent complementary records of meteoric water infiltration. Based on the syn-kinematic character of magnesite veins, we propose that syn-laterization tectonic activity has enhanced water infiltration, favoring the exportation of leached elements like Mg, which has led to widespread carbonation along the serpentine sole. This calls for renewed examination of other magnesite-bearing ophiolites worldwide in order to establish whether active tectonics is commonly a major agent for carbonation.

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Crossref · 10.1130/g34531.1

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  • Genesis of magnesite in hydrothermal environments requires the creation of large open volume space and/or a fracturing mechanism to form large magnesite veins.

    “Genesis in hydrothermal environments also requires the creation of large open volume space and/or a fracturing mechanism to form large magnesite veins (maximum vein thickness 45 m (Mantudi/Euboea, Greece; Pohl, 1989, 1990); and Red Mountain magnesite 36 m) and the possible coupled tectonic and syn-deformation filling of tensional structures (Quesnel et al., 2013).”

    From Clumped-isotope thermometry of magnesium carbonates in ultramafic rocks (2016) · cites this paper as Quesnel et al., 2013

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Authors
Quesnel, B., Gautier, P., Boulvais, P., Cathelineau, M., Maurizot, P., Cluzel, D., Ulrich, M., Guillot, S., Lesimple, S., & Couteau, C.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • University of New Caledonia (NC)
  • Gouvernement de la Nouvelle-Calédonie (NC)
Venue
Geology
Published
2013-10
Volume
41
Issue
10
Pages
1063-1066
ISSN
  • 0091-7613 (ISSN-L)
  • 1943-2682
OpenAlex
W2141989566
Cited by
51
References
29
Citations by year
2026: 3 · 2024: 1 · 2023: 2 · 2022: 3 · 2021: 4 · 2020: 11 · 2019: 4 · 2018: 5 · 2017: 4 · 2016: 6 · 2015: 2 · 2014: 6
FWCI
4.64
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • Geology (publishedVersion)
  • HAL (submittedVersion, other-oa)
  • HAL (submittedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Geochemical Analysis
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geochemistry and Elemental Analysis
  • Physical Sciences › Environmental Science › Environmental Engineering › CO2 Sequestration and Geologic Interactions
Keywords
meteoric water, New Caledonia, mantle peridotite, carbonate alteration, subduction zone

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