Objectif Most large-scale geological process such as plate tectonics or mantle convection involve plastic deformation of rocks. With most recent developments, constraining their rheological properties at natural strain-rates is something we can really achieve in the decade to come. Presently, these theological properties are described with empirical equations which are fitted on macroscopic, average properties, obtained in laboratory experiments performed at human timescales. Their extrapolation to Earth’s conditions over several orders of magnitude is highly questionable as demonstrated by recent comparison with surface geophysical observables.Strain rates couple space and time. We cannot expand time, but we can now reduce length scales. By using the new generation of nanomechanical testing machines in transmission electron microscopes, we can have access to elementary deformation mechanisms and, more importantly, we can measure the key physical parameters which control their dynamics. At this scale, we can have access to very slow mechanisms which were previously out of reach. This approach can be complemented by numerical modelling. By using the recent developments in modelling the so-called “rare events”, we will be able to model mechanisms in the same timescales as nanomechanical testing. By combining, nanomechanical testing and advanced numerical modelling of elementary processes I propose to elaborate a new generation of rheological laws, based on the physics of deformation, which will explicitly involve time (i.e. strain rate) and will require no extrapolation to be applied to natural processes.Applied to olivine, the main constituent of the upper mantle, this will provide the first robust, physics-based rheological laws for the lithospheric and asthenospheric mantle to be compared with surface observables and incorporated in geophysical convection models. Champ scientifique natural sciencesphysical sciencesopticsmicroscopynatural sciencesearth and related environmental sciencesgeologyseismologyplate tectonicssocial scienceslaw Programme(s) H2020-EU.1.1. - EXCELLENT SCIENCE - European Research Council (ERC) Main Programme Thème(s) ERC-2017-ADG - ERC Advanced Grant Appel à propositions ERC-2017-ADG Voir d’autres projets de cet appel Régime de financement ERC-ADG - Advanced Grant Institution d’accueil UNIVERSITE DE LILLE Contribution nette de l'UE € 1 784 400,00 Adresse 42 RUE PAUL DUEZ 59000 Lille France Voir sur la carte Région Hauts-de-France Nord-Pas de Calais Nord Type d’activité Higher or Secondary Education Establishments Liens Contacter l’organisation Opens in new window Participation aux programmes de R&I de l'UE Opens in new window Réseau de collaboration HORIZON Opens in new window Coût total € 1 784 400,00 Bénéficiaires (3) Trier par ordre alphabétique Trier par contribution nette de l'UE Tout développer Tout réduire UNIVERSITE DE LILLE France Contribution nette de l'UE € 1 784 400,00 Adresse 42 RUE PAUL DUEZ 59000 Lille Voir sur la carte Région Hauts-de-France Nord-Pas de Calais Nord Type d’activité Higher or Secondary Education Establishments Liens Contacter l’organisation Opens in new window Participation aux programmes de R&I de l'UE Opens in new window Réseau de collaboration HORIZON Opens in new window Coût total € 1 784 400,00 UNIVERSITE CATHOLIQUE DE LOUVAIN Belgique Contribution nette de l'UE € 200 000,00 Adresse PLACE DE L UNIVERSITE 1 1348 Louvain La Neuve Voir sur la carte Région Région wallonne Prov. Brabant Wallon Arr. Nivelles Type d’activité Higher or Secondary Education Establishments Liens Contacter l’organisation Opens in new window Site web Opens in new window Participation aux programmes de R&I de l'UE Opens in new window Réseau de collaboration HORIZON Opens in new window Coût total € 200 000,00 UNIVERSITEIT ANTWERPEN Belgique Contribution nette de l'UE € 515 000,00 Adresse PRINSSTRAAT 13 2000 Antwerpen Voir sur la carte Région Vlaams Gewest Prov. Antwerpen Arr. Antwerpen Type d’activité Higher or Secondary Education Establishments Liens Contacter l’organisation Opens in new window Site web Opens in new window Participation aux programmes de R&I de l'UE Opens in new window Réseau de collaboration HORIZON Opens in new window Coût total € 515 000,00
