Evolution of H2O content in deforming quartz aggregates: An experimental study
International audience Deformation experiments were carried out on pure quartzite samples (>99% quartz) with a grain size of ~200 μm from Tana, Northern Norway. Deformation conditions were 900 • C, 0.1 wt% H 2 O added, strain rate ~1 × 10-6 s-1 at variable confining pressures from 600 to 2000 MPa...
Published in: | Journal of Structural Geology |
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Main Authors: | , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2024
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Online Access: | https://insu.hal.science/insu-04357852 https://insu.hal.science/insu-04357852/document https://insu.hal.science/insu-04357852/file/1-s2.0-S0191814123002468-main.pdf https://doi.org/10.1016/j.jsg.2023.105029 |
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English |
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[SDU]Sciences of the Universe [physics] |
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[SDU]Sciences of the Universe [physics] Stünitz, H Raimbourg, Hugues Nègre, L Précigout, J Jollands, M Pongrac, P Jeřabek, P Gies, N Lüder, M Evolution of H2O content in deforming quartz aggregates: An experimental study |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience Deformation experiments were carried out on pure quartzite samples (>99% quartz) with a grain size of ~200 μm from Tana, Northern Norway. Deformation conditions were 900 • C, 0.1 wt% H 2 O added, strain rate ~1 × 10-6 s-1 at variable confining pressures from 600 to 2000 MPa. Detailed FTIR measurements of H 2 O indicate that the H 2 O content in the grain boundary region is higher than that inside quartz grains. Hydrostatic treatment and deformation at the chosen temperature and pressure conditions lead to further H 2 O loss from grain interiors and H 2 O increase in the grain boundary region. Varying the confining pressure does not have an observable effect on the H 2 O transfer from grains to the grain boundary region. The 3585 cm-1 absorption band increases systematically with increasing confining pressure. As this band is associated with OH in dislocations, the increase may indicate an increased dislocation density with increasing pressure. The triplet of 3317, 3375 and 3438 cm-1 associated with Al-content in quartz increases in the grain boundary region indicating an exchange of H + together with Al 3+ for Si 4+. The Al and H exchange suggest dissolution-precipitation processes in the grain boundary region facilitating the movement of the quartz grain boundaries (grain boundary migration). The H 2 O in the grain boundary region will be important for enhancing grain boundary migration and thus recrystallization processes during deformation. |
author2 |
Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO) Bureau de Recherches Géologiques et Minières (BRGM)-Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS) University of Tromsø (UiT) Magma & Déformation Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Bureau de Recherches Géologiques et Minières (BRGM)-Observatoire des Sciences de l'Univers en région Centre (OSUC) Gemological Institute of America Institute of Petrology and Structural Geology Univerzita Karlova Praha, Česká republika = Charles University Prague, Czech Republic (UK) Institute of Geological Sciences Bern Universität Bern = University of Bern = Université de Berne (UNIBE) ANR-10-LABX-0100,VOLTAIRE,Geofluids and Volatil elements – Earth, Atmosphere, Interfaces – Resources and Environment(2010) ANR-11-EQPX-0036,PLANEX,Planète Expérimentation: simulation et analyse in-situ en conditions extrêmes(2011) |
format |
Article in Journal/Newspaper |
author |
Stünitz, H Raimbourg, Hugues Nègre, L Précigout, J Jollands, M Pongrac, P Jeřabek, P Gies, N Lüder, M |
author_facet |
Stünitz, H Raimbourg, Hugues Nègre, L Précigout, J Jollands, M Pongrac, P Jeřabek, P Gies, N Lüder, M |
author_sort |
Stünitz, H |
title |
Evolution of H2O content in deforming quartz aggregates: An experimental study |
title_short |
Evolution of H2O content in deforming quartz aggregates: An experimental study |
title_full |
Evolution of H2O content in deforming quartz aggregates: An experimental study |
title_fullStr |
Evolution of H2O content in deforming quartz aggregates: An experimental study |
title_full_unstemmed |
Evolution of H2O content in deforming quartz aggregates: An experimental study |
title_sort |
evolution of h2o content in deforming quartz aggregates: an experimental study |
publisher |
HAL CCSD |
publishDate |
2024 |
url |
https://insu.hal.science/insu-04357852 https://insu.hal.science/insu-04357852/document https://insu.hal.science/insu-04357852/file/1-s2.0-S0191814123002468-main.pdf https://doi.org/10.1016/j.jsg.2023.105029 |
genre |
Northern Norway |
genre_facet |
Northern Norway |
op_source |
ISSN: 0191-8141 Journal of Structural Geology https://insu.hal.science/insu-04357852 Journal of Structural Geology, 2024, 178, pp.105029. ⟨10.1016/j.jsg.2023.105029⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsg.2023.105029 insu-04357852 https://insu.hal.science/insu-04357852 https://insu.hal.science/insu-04357852/document https://insu.hal.science/insu-04357852/file/1-s2.0-S0191814123002468-main.pdf doi:10.1016/j.jsg.2023.105029 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.jsg.2023.105029 |
container_title |
Journal of Structural Geology |
container_volume |
178 |
container_start_page |
105029 |
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1810466343114244096 |
spelling |
ftanrparis:oai:HAL:insu-04357852v1 2024-09-15T18:25:52+00:00 Evolution of H2O content in deforming quartz aggregates: An experimental study Stünitz, H Raimbourg, Hugues Nègre, L Précigout, J Jollands, M Pongrac, P Jeřabek, P Gies, N Lüder, M Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO) Bureau de Recherches Géologiques et Minières (BRGM)-Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS) University of Tromsø (UiT) Magma & Déformation Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Bureau de Recherches Géologiques et Minières (BRGM)-Observatoire des Sciences de l'Univers en région Centre (OSUC) Gemological Institute of America Institute of Petrology and Structural Geology Univerzita Karlova Praha, Česká republika = Charles University Prague, Czech Republic (UK) Institute of Geological Sciences Bern Universität Bern = University of Bern = Université de Berne (UNIBE) ANR-10-LABX-0100,VOLTAIRE,Geofluids and Volatil elements – Earth, Atmosphere, Interfaces – Resources and Environment(2010) ANR-11-EQPX-0036,PLANEX,Planète Expérimentation: simulation et analyse in-situ en conditions extrêmes(2011) 2024 https://insu.hal.science/insu-04357852 https://insu.hal.science/insu-04357852/document https://insu.hal.science/insu-04357852/file/1-s2.0-S0191814123002468-main.pdf https://doi.org/10.1016/j.jsg.2023.105029 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsg.2023.105029 insu-04357852 https://insu.hal.science/insu-04357852 https://insu.hal.science/insu-04357852/document https://insu.hal.science/insu-04357852/file/1-s2.0-S0191814123002468-main.pdf doi:10.1016/j.jsg.2023.105029 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0191-8141 Journal of Structural Geology https://insu.hal.science/insu-04357852 Journal of Structural Geology, 2024, 178, pp.105029. ⟨10.1016/j.jsg.2023.105029⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2024 ftanrparis https://doi.org/10.1016/j.jsg.2023.105029 2024-07-24T23:34:08Z International audience Deformation experiments were carried out on pure quartzite samples (>99% quartz) with a grain size of ~200 μm from Tana, Northern Norway. Deformation conditions were 900 • C, 0.1 wt% H 2 O added, strain rate ~1 × 10-6 s-1 at variable confining pressures from 600 to 2000 MPa. Detailed FTIR measurements of H 2 O indicate that the H 2 O content in the grain boundary region is higher than that inside quartz grains. Hydrostatic treatment and deformation at the chosen temperature and pressure conditions lead to further H 2 O loss from grain interiors and H 2 O increase in the grain boundary region. Varying the confining pressure does not have an observable effect on the H 2 O transfer from grains to the grain boundary region. The 3585 cm-1 absorption band increases systematically with increasing confining pressure. As this band is associated with OH in dislocations, the increase may indicate an increased dislocation density with increasing pressure. The triplet of 3317, 3375 and 3438 cm-1 associated with Al-content in quartz increases in the grain boundary region indicating an exchange of H + together with Al 3+ for Si 4+. The Al and H exchange suggest dissolution-precipitation processes in the grain boundary region facilitating the movement of the quartz grain boundaries (grain boundary migration). The H 2 O in the grain boundary region will be important for enhancing grain boundary migration and thus recrystallization processes during deformation. Article in Journal/Newspaper Northern Norway Portail HAL-ANR (Agence Nationale de la Recherche) Journal of Structural Geology 178 105029 |