New constraints on carbonation associated with brecciation in hyperextended margins (example of Iberia and Newfoundland margins)
International audience The sequestration of CO2 occurs naturally in (ultra)‐mafic rocks by carbonation processes and is commonly noted in areas of the seafloor where mantle lithologies are exhumed. As well as carbonation, mantle exhumation is also responsible for rock brecciation. The relationship b...
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ftunivnantes:oai:HAL:hal-02134231v1 2023-05-15T17:21:19+02:00 New constraints on carbonation associated with brecciation in hyperextended margins (example of Iberia and Newfoundland margins) Picazo, Suzanne Lafay, Romain Faucheux, Vincent Vennemann, Torsten Université de Lausanne = University of Lausanne (UNIL) Géosciences Montpellier Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) Ecole et Observatoire des Sciences de la Terre (EOST) Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 2019-04-15 https://hal.umontpellier.fr/hal-02134231 https://doi.org/10.1111/ter.12383 en eng HAL CCSD Wiley-Blackwell info:eu-repo/semantics/altIdentifier/doi/10.1111/ter.12383 hal-02134231 https://hal.umontpellier.fr/hal-02134231 doi:10.1111/ter.12383 ISSN: 0954-4879 EISSN: 1365-3121 Terra Nova https://hal.umontpellier.fr/hal-02134231 Terra Nova, Wiley-Blackwell, 2019, ⟨10.1111/ter.12383⟩ [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry info:eu-repo/semantics/article Journal articles 2019 ftunivnantes https://doi.org/10.1111/ter.12383 2022-09-07T00:06:33Z International audience The sequestration of CO2 occurs naturally in (ultra)‐mafic rocks by carbonation processes and is commonly noted in areas of the seafloor where mantle lithologies are exhumed. As well as carbonation, mantle exhumation is also responsible for rock brecciation. The relationship between carbonation and brecciation is not well constrained. A temporal evolution from syn‐ to post‐tectonic carbonation and brecciation is proposed in line with progressive mantle exhumation. Using a petrological study of brecciated material from IODP drill cores of the Iberia–Newfoundland conjugated margins, we relate crack–seal veins to tectonic brecciation, authigenic calcite with scalenohedral structure to hydraulic brecciation and reworked clasts within cement to (tectono)‐sedimentary processes. Oxygen isotope compositions reveal late‐staged < 50°C carbonate generation in the proximal part of the ocean–continent transition, which have followed an earlier phase of sub‐seafloor carbonate generation. The results are crucial to understand CO2 exchange within the reworked sub‐seafloor in passive margins and oceanic systems. Article in Journal/Newspaper Newfoundland Université de Nantes: HAL-UNIV-NANTES Terra Nova |
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Université de Nantes: HAL-UNIV-NANTES |
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language |
English |
topic |
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry |
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[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry Picazo, Suzanne Lafay, Romain Faucheux, Vincent Vennemann, Torsten New constraints on carbonation associated with brecciation in hyperextended margins (example of Iberia and Newfoundland margins) |
topic_facet |
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry |
description |
International audience The sequestration of CO2 occurs naturally in (ultra)‐mafic rocks by carbonation processes and is commonly noted in areas of the seafloor where mantle lithologies are exhumed. As well as carbonation, mantle exhumation is also responsible for rock brecciation. The relationship between carbonation and brecciation is not well constrained. A temporal evolution from syn‐ to post‐tectonic carbonation and brecciation is proposed in line with progressive mantle exhumation. Using a petrological study of brecciated material from IODP drill cores of the Iberia–Newfoundland conjugated margins, we relate crack–seal veins to tectonic brecciation, authigenic calcite with scalenohedral structure to hydraulic brecciation and reworked clasts within cement to (tectono)‐sedimentary processes. Oxygen isotope compositions reveal late‐staged < 50°C carbonate generation in the proximal part of the ocean–continent transition, which have followed an earlier phase of sub‐seafloor carbonate generation. The results are crucial to understand CO2 exchange within the reworked sub‐seafloor in passive margins and oceanic systems. |
author2 |
Université de Lausanne = University of Lausanne (UNIL) Géosciences Montpellier Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) Ecole et Observatoire des Sciences de la Terre (EOST) Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Picazo, Suzanne Lafay, Romain Faucheux, Vincent Vennemann, Torsten |
author_facet |
Picazo, Suzanne Lafay, Romain Faucheux, Vincent Vennemann, Torsten |
author_sort |
Picazo, Suzanne |
title |
New constraints on carbonation associated with brecciation in hyperextended margins (example of Iberia and Newfoundland margins) |
title_short |
New constraints on carbonation associated with brecciation in hyperextended margins (example of Iberia and Newfoundland margins) |
title_full |
New constraints on carbonation associated with brecciation in hyperextended margins (example of Iberia and Newfoundland margins) |
title_fullStr |
New constraints on carbonation associated with brecciation in hyperextended margins (example of Iberia and Newfoundland margins) |
title_full_unstemmed |
New constraints on carbonation associated with brecciation in hyperextended margins (example of Iberia and Newfoundland margins) |
title_sort |
new constraints on carbonation associated with brecciation in hyperextended margins (example of iberia and newfoundland margins) |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.umontpellier.fr/hal-02134231 https://doi.org/10.1111/ter.12383 |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
ISSN: 0954-4879 EISSN: 1365-3121 Terra Nova https://hal.umontpellier.fr/hal-02134231 Terra Nova, Wiley-Blackwell, 2019, ⟨10.1111/ter.12383⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/ter.12383 hal-02134231 https://hal.umontpellier.fr/hal-02134231 doi:10.1111/ter.12383 |
op_doi |
https://doi.org/10.1111/ter.12383 |
container_title |
Terra Nova |
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1766105222248136704 |