Carbonation of mantle peridotite by CO2-rich fluids: the formation of listvenites in the Advocate ophiolite complex (Newfoundland, Canada)
The mantle section of the Advocate ophiolite (Newfoundland, Canada) contains unique outcrops of listvenite (magnesite-quartz), antigorite- and quartz-bearing talc-magnesite rock, and carbonated antigorite-serpentinite. This lithological sequence records the sequential carbonation of serpentinite by...
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ftconicet:oai:ri.conicet.gov.ar:11336/118043 2023-10-09T21:53:41+02:00 Carbonation of mantle peridotite by CO2-rich fluids: the formation of listvenites in the Advocate ophiolite complex (Newfoundland, Canada) Menzel, Manuel D. Garrido, Carlos J. López Sánchez Vizcaíno, Vicente Marchesi, Claudio Hidas, Károly Escayola, Monica Patricia Delgado Huertas, Antonio application/pdf http://hdl.handle.net/11336/118043 eng eng Elsevier Science info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0024493718302007?via%3Dihub info:eu-repo/semantics/altIdentifier/doi/10.1016/j.lithos.2018.06.001 http://hdl.handle.net/11336/118043 Menzel, Manuel D.; Garrido, Carlos J.; López Sánchez Vizcaíno, Vicente; Marchesi, Claudio; Hidas, Károly; et al.; Carbonation of mantle peridotite by CO2-rich fluids: the formation of listvenites in the Advocate ophiolite complex (Newfoundland, Canada); Elsevier Science; Lithos; 323; 6-2018; 238-261 0024-4937 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ ADVOCATE COMPLEX CO2 SEQUESTRATION FOREARC LISTVENITE PERIDOTITE CARBONATION SERPENTINIZATION https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1016/j.lithos.2018.06.001 2023-09-24T19:39:29Z The mantle section of the Advocate ophiolite (Newfoundland, Canada) contains unique outcrops of listvenite (magnesite-quartz), antigorite- and quartz-bearing talc-magnesite rock, and carbonated antigorite-serpentinite. This lithological sequence records the sequential carbonation of serpentinite by CO2-rich hydrothermal fluids. High Cr and Ni contents and preservation of Cr-spinel with a composition similar to that of Atg-serpentinite (molar Mg/Mg + Fe = 0.50–0.65; Cr/Cr + Al = 0.50–0.70), show that the Advocate listvenite and talc-magnesite rocks formed by carbonation of variably serpentinized mantle harzburgite. Replacement of lizardite by magnesite coeval with the breakdown of lizardite to antigorite + brucite and the lack of prograde olivine and magnetite in antigorite serpentinite and talc-magnesite rocks constrain the temperature of carbonation between c. 280 °C and 420 °C. Thermodynamic modelling of carbonation of serpentinite at 300 °C and 0.2–0.5 GPa accounts for the sequence of carbonated rocks in the Advocate complex. Phase relations and petrological observations indicate that the aqueous aSiO2 and aCO2 of the infiltrating CO2-rich fluid were buffered at the Atg-Tlc-Mgs and Qtz-Tlc-Mgs pseudo-invariant points, forming dominantly three-phase rocks by variable extents of carbonation at these pseudo-invariant points. Listvenites formed at large fluid-rock ratio when quartz became saturated in the fluid and precipitated along magnesite grain boundaries and in variably sized tensional veins. The whole rock Fe3+/Fetotal ratio of the Advocate carbonate-bearing sequence decreases with increasing whole rock carbon content, from 0.65–0.80 in brucite-bearing antigorite serpentinite to 0.10–0.30 in talc-magnesite rocks and listvenite. The whole rock iron reduction is associated with an increase in the ferrous iron content of magnesite and the formation of hematite and goethite, indicating a concomitant increase of the fluid oxygen fugacity. The sequence of carbonation reactions is uniquely preserved in three main ... Article in Journal/Newspaper Newfoundland CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Canada Lithos 323 238 261 |
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CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
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ftconicet |
language |
English |
topic |
ADVOCATE COMPLEX CO2 SEQUESTRATION FOREARC LISTVENITE PERIDOTITE CARBONATION SERPENTINIZATION https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
ADVOCATE COMPLEX CO2 SEQUESTRATION FOREARC LISTVENITE PERIDOTITE CARBONATION SERPENTINIZATION https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Menzel, Manuel D. Garrido, Carlos J. López Sánchez Vizcaíno, Vicente Marchesi, Claudio Hidas, Károly Escayola, Monica Patricia Delgado Huertas, Antonio Carbonation of mantle peridotite by CO2-rich fluids: the formation of listvenites in the Advocate ophiolite complex (Newfoundland, Canada) |
topic_facet |
ADVOCATE COMPLEX CO2 SEQUESTRATION FOREARC LISTVENITE PERIDOTITE CARBONATION SERPENTINIZATION https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
The mantle section of the Advocate ophiolite (Newfoundland, Canada) contains unique outcrops of listvenite (magnesite-quartz), antigorite- and quartz-bearing talc-magnesite rock, and carbonated antigorite-serpentinite. This lithological sequence records the sequential carbonation of serpentinite by CO2-rich hydrothermal fluids. High Cr and Ni contents and preservation of Cr-spinel with a composition similar to that of Atg-serpentinite (molar Mg/Mg + Fe = 0.50–0.65; Cr/Cr + Al = 0.50–0.70), show that the Advocate listvenite and talc-magnesite rocks formed by carbonation of variably serpentinized mantle harzburgite. Replacement of lizardite by magnesite coeval with the breakdown of lizardite to antigorite + brucite and the lack of prograde olivine and magnetite in antigorite serpentinite and talc-magnesite rocks constrain the temperature of carbonation between c. 280 °C and 420 °C. Thermodynamic modelling of carbonation of serpentinite at 300 °C and 0.2–0.5 GPa accounts for the sequence of carbonated rocks in the Advocate complex. Phase relations and petrological observations indicate that the aqueous aSiO2 and aCO2 of the infiltrating CO2-rich fluid were buffered at the Atg-Tlc-Mgs and Qtz-Tlc-Mgs pseudo-invariant points, forming dominantly three-phase rocks by variable extents of carbonation at these pseudo-invariant points. Listvenites formed at large fluid-rock ratio when quartz became saturated in the fluid and precipitated along magnesite grain boundaries and in variably sized tensional veins. The whole rock Fe3+/Fetotal ratio of the Advocate carbonate-bearing sequence decreases with increasing whole rock carbon content, from 0.65–0.80 in brucite-bearing antigorite serpentinite to 0.10–0.30 in talc-magnesite rocks and listvenite. The whole rock iron reduction is associated with an increase in the ferrous iron content of magnesite and the formation of hematite and goethite, indicating a concomitant increase of the fluid oxygen fugacity. The sequence of carbonation reactions is uniquely preserved in three main ... |
format |
Article in Journal/Newspaper |
author |
Menzel, Manuel D. Garrido, Carlos J. López Sánchez Vizcaíno, Vicente Marchesi, Claudio Hidas, Károly Escayola, Monica Patricia Delgado Huertas, Antonio |
author_facet |
Menzel, Manuel D. Garrido, Carlos J. López Sánchez Vizcaíno, Vicente Marchesi, Claudio Hidas, Károly Escayola, Monica Patricia Delgado Huertas, Antonio |
author_sort |
Menzel, Manuel D. |
title |
Carbonation of mantle peridotite by CO2-rich fluids: the formation of listvenites in the Advocate ophiolite complex (Newfoundland, Canada) |
title_short |
Carbonation of mantle peridotite by CO2-rich fluids: the formation of listvenites in the Advocate ophiolite complex (Newfoundland, Canada) |
title_full |
Carbonation of mantle peridotite by CO2-rich fluids: the formation of listvenites in the Advocate ophiolite complex (Newfoundland, Canada) |
title_fullStr |
Carbonation of mantle peridotite by CO2-rich fluids: the formation of listvenites in the Advocate ophiolite complex (Newfoundland, Canada) |
title_full_unstemmed |
Carbonation of mantle peridotite by CO2-rich fluids: the formation of listvenites in the Advocate ophiolite complex (Newfoundland, Canada) |
title_sort |
carbonation of mantle peridotite by co2-rich fluids: the formation of listvenites in the advocate ophiolite complex (newfoundland, canada) |
publisher |
Elsevier Science |
url |
http://hdl.handle.net/11336/118043 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0024493718302007?via%3Dihub info:eu-repo/semantics/altIdentifier/doi/10.1016/j.lithos.2018.06.001 http://hdl.handle.net/11336/118043 Menzel, Manuel D.; Garrido, Carlos J.; López Sánchez Vizcaíno, Vicente; Marchesi, Claudio; Hidas, Károly; et al.; Carbonation of mantle peridotite by CO2-rich fluids: the formation of listvenites in the Advocate ophiolite complex (Newfoundland, Canada); Elsevier Science; Lithos; 323; 6-2018; 238-261 0024-4937 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1016/j.lithos.2018.06.001 |
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Lithos |
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323 |
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238 |
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261 |
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1779316991331401728 |