ELECTROLITH

Electrical Petrology: tracking mantle melting and volatiles cycling using electrical conductivity

Coordinatore	CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE    more Spiacenti, non ci sono informazioni su questo coordinatore. Contattare Fabio per maggiori infomrazioni, grazie.
Nazionalità Coordinatore	France [FR]
Totale costo	1˙051˙236 €
EC contributo	1˙051˙236 €
Programma	FP7-IDEAS-ERC Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
Code Call	ERC-2011-StG_20101014
Funding Scheme	ERC-SG
Anno di inizio	2011
Periodo (anno-mese-giorno)	2011-11-01   -   2016-10-31

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	UNIVERSITE PIERRE ET MARIE CURIE - PARIS 6  Organization address address: Place Jussieu 4 city: PARIS postcode: 75252 contact info Titolo: Ms. Nome: Ouerdia Cognome: Oumohand Email: send email Telefono: 33144272656 Fax: 33144277484	FR (PARIS)	beneficiary	143˙520.00
2	CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE  Organization address address: Rue Michel -Ange 3 city: PARIS postcode: 75794 contact info Titolo: Dr. Nome: Fabrice Olivier Cognome: Gaillard Email: send email Telefono: +33 2 255388 Fax: +33 2 38636488	FR (PARIS)	hostInstitution	907˙716.00
3	CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE  Organization address address: Rue Michel -Ange 3 city: PARIS postcode: 75794 contact info Titolo: Ms. Nome: Gaëlle Cognome: Bouin Email: send email Telefono: +33 2 38257620 Fax: +33 2 38697031	FR (PARIS)	hostInstitution	907˙716.00

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 Obiettivo del progetto (Objective)

'Melting in the Earth’s mantle rules the deep volatile cycles because it produces liquids that concentrate and redistribute volatile species. Such redistributions trigger volcanic degassing, magma emplacement in the crust and hydrothermal circulation, and other sorts of chemical redistribution within the mantle (metasomatism). Melting also affects mantle viscosities and therefore impacts on global geodynamics. So far, experimental petrology has been the main approach to construct a picture of the mantle structure and identify regions of partial melting. Magnetotelluric (MT) surveys reveal the electrical properties of the deep Earth and show highly conductive regions within the mantle, most likely related to volatiles and melts. However, melting zones disclosed by electrical conductivity do not always corroborate usual pictures deduced from experimental petrology. In 2008, I proposed that small amount of melts, very rich in volatiles species and with unusual physical properties, could reconcile petrological and geophysical observations. The broadening of this idea is however limited by (i) the incomplete knowledge of both petrological and electrical properties of those melts and (ii) the lack of petrologically based models to fit MT data. ELECTROLITH will fill this gap by treating the following points: - How volatiles in the H-C-S-Cl-F system trigger the beginning of melting and how it affects mantle conductivity? - What are the atomic structures and the physical properties of such volatile-rich melts? - How can such melts migrate in the mantle and what are the relationships with deformation? - What are the scaling procedures to integrate lab-scale observations into a petrological scheme that could decipher MT data in terms of melt percolation models, strain distributions and chemical redistributions in the mantle ELECTROLITH milestone is therefore a reconciled perspective of geophysics and petrology that will profoundly enrich our vision of the mantle geodynamics'