Titre :

Deformation and transformation of subduction zone hydrous minerals and rocks

Auteur(s) :

Hilairet, Nadege [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]

Titre de la manifestation scientifique :

EMU lecture

Organisateur(s) de la manifestation scientifique :

European Mineralogical Union

Ville :

Online

Pays :

France

Date de début de la manifestation scientifique :

2021-02-12

Discipline(s) HAL :

Chimie/Matériaux
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Physique [physics]/Physique [physics]/Géophysique [physics.geo-ph]
Physique [physics]/Astrophysique [astro-ph]
Planète et Univers [physics]/Astrophysique [astro-ph]
Planète et Univers [physics]/Sciences de la Terre

Résumé en anglais : [en]

Hydrous minerals condition water transport and location down to depths in the earth, and are crucial to the overall dynamics in subduction zones. Their presence, destabilisation or growth, can affect the long- or short-term ...
Lire la suite >Hydrous minerals condition water transport and location down to depths in the earth, and are crucial to the overall dynamics in subduction zones. Their presence, destabilisation or growth, can affect the long- or short-term coupling between subducting slab and overlying mantle, generate earthquakes, modify the convection in the mantle wedge. Their deformation properties and the coupling between deformation and mineralogical reactions in which they are involved, are therefore of interest to several communities in the geosciences, from modeling the evolution of subduction zones, interpreting seismic data and earthquakes locations, to helping field observations interpretations. In this lecture I will try to provide a view of the progresses made in the last two decades, particularly those allowed by the development of experimental approaches involving in-situ measurements. Among the main hydrous minerals and rocks of subduction zones, the focus will be on the deformation properties of serpentines and serpentinites. I will present mechanical behaviors and deformation mechanisms from single-phase aggregates deformation studies to deformation of polyphased rocks, and also those seen when coupled with mineralogical reactions. I will also propose a view on the limitations and interests of these results for their application to subduction zones dynamics.Lire moins >

Langue :

Anglais

Comité de lecture :

Non

Audience :

Internationale

Vulgarisation :

Non

Références liée(s) :

https://pod.univ-lille.fr/video/17898-hilairet-emump4/

Projet ANR :

Deformation des roches multiphasées des zones de subduction

Prix - Récompense :

2019 Research Excellence Award of the European Mineralogical Union

Établissement(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Matériaux Terrestres et Planétaires

Date de dépôt :

2021-03-08T16:17:25Z
2021-03-09T15:49:32Z