Objetivo The Earth formed ~ 4.5 billion years ago, from accreting particles of dust and primitive meteorites. It is the only habitable planet in our solar system and has a unique history of extended accretion and core formation coupled with active plate tectonics. Accretion and core formation would have defined the initial elemental composition of the Earth’s interior whereas plate tectonic processes controlled chemical exchange between the Earth’s surface and interior and the distribution of elements between major geochemical reservoirs. The overarching goal of this proposal is to define the roles of these processes in the chemical evolution of the Earth and hence in the creation of a habitable planet.In order to achieve this goal I propose to investigate the partitioning of new stable isotope systems such as Ge and Se in high-pressure experiments that simulate core formation. This novel, multidisciplinary approach will provide some of the first direct constraints on the extent to which these volatile elements were partitioned into the core. We will use this information to address the fundamental issue of whether the Earth acquired its volatile elements inventory early, during core formation, or subsequently, as part of a “late veneer”. The second major theme of the proposed research uses Fe, Zn, Mo and Se stable isotopes to trace the cycling of Fe and S during subduction, the tectonic process where one plate sinks beneath another and is recycled into the Earth’s deep interior. The goal of this project is to understand the impact of subduction on the chemical and redox evolution of the Earth’s interior and the relationship between tectonic recycling and the rise of oxygen in the Earth’s atmosphere ~ 2.5 billion years ago. This theme will focus on samples of relict subducted plate material and of the Earth’s interior, obtained as fragments sampled by lavas or as ancient minerals trapped within diamonds. Ámbito científico engineering and technologyenvironmental engineeringwaste managementwaste treatment processesrecyclinghumanitieshistory and archaeologyhistorynatural sciencesphysical sciencesastronomyplanetary sciencesmeteoritesnatural sciencesphysical sciencesastronomyplanetary sciencesplanetsnatural sciencesearth and related environmental sciencesgeologyseismologyplate tectonics Programa(s) 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) Tema(s) ERC-SG-PE10 - ERC Starting Grant - Earth system science Convocatoria de propuestas ERC-2012-StG_20111012 Consulte otros proyectos de esta convocatoria Régimen de financiación ERC-SG - ERC Starting Grant Institución de acogida THE CHANCELLOR MASTERS AND SCHOLARS OF THE UNIVERSITY OF CAMBRIDGE Aportación de la UE € 1 061 279,49 Dirección TRINITY LANE THE OLD SCHOOLS CB2 1TN Cambridge Reino Unido Ver en el mapa Región East of England East Anglia Cambridgeshire CC Tipo de actividad Higher or Secondary Education Establishments Contacto administrativo Renata Schaeffer (Ms.) Investigador principal Helen Williams (Dr.) Enlaces Contactar con la organización Opens in new window Sitio web Opens in new window Coste total Sin datos Beneficiarios (2) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo THE CHANCELLOR MASTERS AND SCHOLARS OF THE UNIVERSITY OF CAMBRIDGE Reino Unido Aportación de la UE € 1 061 279,49 Dirección TRINITY LANE THE OLD SCHOOLS CB2 1TN Cambridge Ver en el mapa Región East of England East Anglia Cambridgeshire CC Tipo de actividad Higher or Secondary Education Establishments Contacto administrativo Renata Schaeffer (Ms.) Investigador principal Helen Williams (Dr.) Enlaces Contactar con la organización Opens in new window Sitio web Opens in new window Coste total Sin datos UNIVERSITY OF DURHAM La participación finalizó Reino Unido Aportación de la UE € 938 695,51 Dirección STOCKTON ROAD THE PALATINE CENTRE DH1 3LE Durham Ver en el mapa Región North East (England) Tees Valley and Durham Durham CC Tipo de actividad Higher or Secondary Education Establishments Contacto administrativo Wendy Harle (Ms.) Enlaces Contactar con la organización Opens in new window Sitio web Opens in new window Coste total Sin datos