Academic Journal
Stress Balance in Synthetic Serpentinized Peridotites Deformed at Subduction Zone Pressures
| العنوان: | Stress Balance in Synthetic Serpentinized Peridotites Deformed at Subduction Zone Pressures |
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| المؤلفون: | Hilairet, Nadege, Guignard, J., Ferrand, T. P., Merkel, Sébastien, Raterron, Paul, Ildefonse, B., Fadel, Alexandre, Crichton, W. |
| المساهمون: | Unité Matériaux et Transformations - UMR 8207 (UMET), Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure de Chimie de Lille (ENSCL)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), European Synchrotron Radiation Facility (ESRF), Géosciences Montpellier, Université des Antilles et de la Guyane (UAG)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Institut Michel Eugène Chevreul - FR 2638 (IMEC), Université d'Artois (UA)-Centrale Lille-Institut de Chimie - CNRS Chimie (INC-CNRS)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), CPER ARCHI-CM, INSU-PNP, ANR-17-CE31-0012,MADISON,Deformation des roches multiphasées des zones de subduction(2017), ANR-12-JS06-0003,DELF,Séismes Profonds : du Laboratoire au Terrain(2012) |
| المصدر: | Journal of Geophysical Research: Solid Earth ; https://hal.univ-lille.fr/hal-04516307 ; Journal of Geophysical Research: Solid Earth, 2024, Journal of Geophysical Research: Solid Earth, 129 (3), pp.e2023JB028073. ⟨10.1029/2023jb028073⟩ |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2024 |
| المجموعة: | Université de Montpellier: HAL |
| مصطلحات موضوعية: | [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [PHYS.COND.CM-DS-NN]Physics [physics]/Condensed Matter [cond-mat]/Disordered Systems and Neural Networks [cond-mat.dis-nn], [PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] |
| الوصف: | International audience ; AbstractWeak serpentine minerals affect the mechanical behavior of serpentinized peridotites at depth, and may play a significant role in deformation localization within subduction zones, at local or regional scale. Mixtures of olivine with 5, 10, 20 and 50 vol. % fraction of antigorite, proxies for serpentinized peridotites, were deformed in axial shortening geometry under high pressures (ca. 2–5 GPa) and moderate temperatures (ca. 350°C), with in situ stress and strain measurements using synchrotron X‐rays. We evaluate the average partitioning of stresses at the grains scale within each phase (mineral) of the aggregate and compare with pure olivine aggregates in the same conditions. The in situ stress balance is different between low antigorite contents up to 10 vol. %, and higher contents above 20 vol. %. Microstructure and stress levels suggest the deformation mechanisms under these experimental conditions are akin to (semi)brittle and frictional processes. Unlike when close to dehydration temperatures, hardening of the aggregate is observed at low serpentine fractions, due to an increase in local stress concentrations. Below and above the 10–20 vol. % threshold, the stress state in the aggregate corresponds to friction laws already measured for pure olivine aggregates and pure antigorite aggregates respectively. As expected, the behavior of the two‐phase aggregate does not evolve as calculated from simple iso‐stress or iso‐strain bounds, and calls for more advanced physical models of two‐phase mixtures. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | WOS: 001187566400001 |
| DOI: | 10.1029/2023jb028073 |
| الاتاحة: | https://hal.univ-lille.fr/hal-04516307 https://hal.univ-lille.fr/hal-04516307v1/document https://hal.univ-lille.fr/hal-04516307v1/file/Hilairet_etal_2023_lastrevision-nohighlights%20copie3.pdf https://hal.univ-lille.fr/hal-04516307v1/file/JGR%20Solid%20Earth%20-%202024%20-%20Hilairet%20-%20Stress%20Balance%20in%20Synthetic%20Serpentinized%20Peridotites%20Deformed%20at%20Subduction%20Zone.pdf https://doi.org/10.1029/2023jb028073 |
| Rights: | http://creativecommons.org/licenses/by-nc-nd/ ; info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.C2E78723 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1029/2023jb028073 |
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