Dear colleagues, We would like to invite contributions to the theme 04c, « Transport and deformation processes in the deep Earth » at the Goldschmidt Conference (Sacramento, California, 8-13 June 2014). The abstract deadline is coming soon .........8 February 2014 ! Visit the Goldschmidt website (goldschmidt.info/2014) to learn more about this session and the 2014 Goldschmidt Conferences in California. / **************** Transport and deformation processes in the deep Earth Co-convenors: Lars N. Hansen, Sylvie Demouchy, James A. Van Orman Confirmed keynote speaker: E. B. Watson The chemical and structural evolution of Earth's deep interior relies intimately on the mechanisms that allow material to be transported. Chemical diffusion is based on atomic-level transport, while deformation and flow result in macroscopic advection and convection. Furthermore, at the extreme conditions of the deep interior, diffusive processes are likely to control the kinetics of deformation, and therefore chemical diffusion is inextricably linked to large-scale rheological behavior. These forms of material transport and their kinetics critically affect the longevity of compositional heterogeneity in Earth's mantle and core. Additionally, the complex chemical and mechanical interactions at major compositional interfaces may have serious ramifications for large-scale flow. Although much understanding has been gained through geophysical observations, laboratory experiments, and numerical simulations, significant work remains to be done both to constrain transport kinetics and to relate those kinetics to deformation at a variety of scales. Such phenomena are especially underconstrained in regions of complex compositional heterogeneity. This session aims to bring together an interdisciplinary group of geoscientists to discuss new results into chemical and isotopic diffusion, rheological behavior, and their interplay in geodynamic settings relevant to the inner core through the lithosphere. Lars N. Hansen Department of Earth Sciences University of Oxford, UK Sylvie Demouchy CNRS & Géosciences Montpellier University of Montpellier 2, France James A. Van Orman Department of Earth, Environmental and Planetary Sciences Case Western Reserve University, USA Dr. Sylvie Demouchy Chargée de Recherche CNRS ----------------------------------------------- Géosciences Montpellier CNRS & Université Montpellier 2, cc060 Place Eugène Bataillon 34095 Montpellier FRANCE Tel office : +33 (0)467 14 49 42 Tel lab : +33 (0)467 14 36 07 Fax :+33 (0)467 14 36 03 email:demouchy@univ-montp2.fr homepage:http://www.gm.univ-montp2.fr/spip/spip.php?article773