S8 Diffusion, mineral reaction and deformation mechanisms from low to high temperatures: flow and brittle processes of the Earth’s interior

Dates

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Letter of Abstract Acceptance 7 June, 10 June, 2016
Schedule and Conference Programme 20 June, 30 June, 2016
Accommodation deadline 31 August, 2016

Programme

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Plenary Lectures

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Sylvie Demouchy, Katharina Marquardt, Juan Jimenez-Millan, Martine Buatier and Cecilia Viti (contact: sylvie.demouchy@univ-montp2.fr)

Mineral deformation and transport mechanisms control chemical and structural evolution of crust and upper mantle. Chemical self- and inter-diffusion is based on atomic-level transport, while plastic deformation of coarse-grained rocks is based on dislocation interactions; both mechanisms result in large-scale material flow such as plate tectonics. Furthermore, diffusive processes at the extreme pressure of the Earth’s deep interior likely control the kinetics of deformation and thus the survival of chemical heterogeneities. Time evolution of deformation textures provides key information for the interpretation of complex geophysical data (i.e., seismic and electrical conductivity). In the upper crust, faults can be considered as major discontinuities favouring fluid circulation, fluid-rock interactions and mineralizations. Mineral genesis and transformation play a key role in crustal faulting and, consequently on fault seismic activity. The presence of neo-formed minerals and fluids are important factors controlling fault strength, earthquake nucleation and propagation. Recent technical improvements such as numerical modelling at various scales (atomic-, meso- to macro- scale) and new experiments at extreme pressure and high temperatures, as well as friction experiment at low temperatures, combined with state-of-the-art analytical tools (e.g., FIB, TEM, nano-SIMs, atom probe) now allows to quantify chemical interactions and complex rheology in various types of minerals and their grain boundaries. Nevertheless, the community still faces under-constrained deep Earth’s processes and technical challenges. This session aims to bring together a multidisciplinary group of mineralogists and tectonics to exchange new results on chemical and isotopic diffusion, rheological behaviour, their possible interplay in minerals and rocks from low to high temperature and their effects on processes of the Earth’s interior.

The keynote speaker will be Lucie Tajcmanova (ETH-Zürich, Switzerland)

Food for good

food for good

As of 2015, Palacongressi di Rimini offers its clients the opportunity to recover leftover food from their events and donate it to charities . Palacongressi endorses Food For Good - from meeting to solidarity, an initiative born out of a collaboration between Federcongressi, Food Bank and Equoevento. Every year in Italy, over 6 tons of food go to waste; at the same time, there are 10 million people living in poverty, 6.3 of which in conditions of absolute poverty, including 1 million children between the ages of 0-5 years. The contribution of organisers and exhibitors at the Palacongressi is therefore of major importance: with no additional costs and in agreement with Summertrade chefs, the catering company of the Rimini Fiera Group and official partner of the Palacongressi, menus are planned which are suitable both for the guests' needs and for the conservation and transport of any leftovers, resulting in a worthy act of social responsibility for the local area. The results and the feedback we have had in the first months of the project speak for themselves. Contact our staff for more information: always ready to help guide your choice. The association chosen by Palacongressi is Opera Sant'Antonio di Rimini, a group of volunteers that manages the city's soup kitchen.