GEOSOX

GEOSOX
Titre :	Geochronology of secondary oxide minerals in bedrock and fluid flow and deformation histories
Budget :	134 k€
Subventions :	FP7-PEOPLE (134 k€)
Sous-programme :	FP7-PEOPLE-2011-IIF Marie Curie Action
Type de contrat :	International Incoming Fellowships (IIF)
Début :	1er août 2012
Fin :	31 juillet 2013
Retour à la liste des projets du programme

GEOSOX est l'acronyme du projet européen Geochronology of secondary oxide minerals in bedrock and fluid flow and deformation histories, qui a pour référence sur le service CORDIS 299384.

English description

Note : Les objectifs suivants sont repris de la fiche du projet sur Cordis

Objective

Secondary Fe- and Mn-oxide minerals are common in crustal rocks, where they form by fluid flow long after initial formation of their host rocks. This fluid flow represents episodes of deformation, magmatic events, hydrocarbon migration, or topographic and climatic changes that drive groundwater flow. Understanding these processes constrains deformation, resources, hydrology, and landscape evolution.

This proposal aims to determine deposition ages of Fe- and Mn-oxides from two geologic environments and to relate them via geochemical tracers to fluid migration processes. The two types of deposits to be studied are 1) vein hematite associated with deformation of crystalline rocks; 2) Fe- and Mn-oxide cements and concretions in sandstones. Preliminary analyses show that these are amenable to dating by (U-Th)/He, and their ages commonly reflect those of oxide formation related to known deformation or fluid flow episodes. This project will 1) improve dating methods for these types of secondary oxides, 2) understand the origin and significance of their compositional variability, and 3) document age-composition relationships in secondary oxides in regional transects in order to understand regional integrated fluid flow and deformation.

Professor Reiners (Univ. Arizona) is an internationally renowned leader in low temperature thermo-chronology. The ideal way to transfer his expertise to the European geoscience community is via close collaboration with local researchers. This project, in developing the methodology for constraining fluid flow using secondary oxides, will transfer these skills to CRPG-CNRS through this collaboration. Funding is requested for Reiners to work at CRPG for 12 months. Reiners will initiate a workshop for master's level students on low temperature thermo-chronology, including a student exchange program. General public outreach activities will include involvement in "La Fête de la Science", Nancy (Oct. 2012).

 

Les partenaires du projet

Coordinateur

• Centre national de la recherche scientifique - Centre de recherches pétrographiques et géochimiques - Nancy (Lorraine, France)

Financement

• Coût total du projet : 134 548 €
• Subvention de la Commission européenne (programme FP7-PEOPLE) : 134 548 €

Dates importantes

• Date de début : 1^er août 2012
• Date de fin : 31 juillet 2013

Voir aussi

Liens externes

• Le [ projet].