EGU General Assembly 2007

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	Quick Search Title + Author Title Author Abstract Number Schedule Number Programme Groups Great Debates Union Symposia Educational Symposia Atmospheric Sciences Biogeosciences Climate: Past, Present, Future Cryospheric Sciences Energy, Resources and the Environment Geochemistry, Mineralogy, Petrology & Volcanology Geodesy Geodynamics Geomorphology Geosciences Instrumentation and Data Systems Hydrological Sciences Isotopes in Geosciences: Instrumentation and Applications Magnetism, Palaeomagnetism, Rock Physics & Geomaterials Natural Hazards Nonlinear Processes in Geosciences Ocean Sciences Planetary and Solar System Sciences Seismology Soil System Sciences Solar-Terrestrial Sciences Stratigraphy, Sedimentology and Palaeontology Tectonics and Structural Geology Medal Lectures EGU Short Courses Keynote Lectures Townhall Meetings Division Business Meetings Editorial Board Meetings Union Meetings Splinter Meetings Forums   Information - GMPV12 The mantle perspective: compositional and rheological constraints on litosphere evolution Event Information This Session is aimed to compare the up-to-date mineralogical, petrologic, geochemical and structural knowledge of mantle rocks brought to the surface during volcanic activity (peridotite xenoliths), exposed at the surface as a result of tectonic processes (orogenic and ophiolitic peridotite massifs) or sampled on the ocean floor (abyssal peridotites). These occurrences record very different magmatic, metamorphic and metasomatic imprints, which are peculiar of the different geodynamic settings of origin and testify for the complexity of the chemical-physical processes which accompany the dynamic evolution of the upper mantle. Knowledge of the lithospheric upper mantle based on studies on orogenic and oceanic peridotites and mantle xenoliths has been greatly improved in the last decades. The significant improvement of the analytical tools and new methodological and conceptual approaches promoted significant deepening of present understanding of composition and evolution of the convective mantle, melt production in the asthenosphere and melt migration though the mantle lithosphere. These processes lead to substantial modifications of the chemical composition and physical and rheological characteristics of the lithospheric mantle, at the different geodynamic settings. The focus of the Session is to promote combined geological, geophysical, petrologic and geochemical approaches to understand the mechanisms of mantle dynamics resulting in compositional and isotopic heterogeneity of the different mantle sectors. Accordingly, the Session is of particular interest for presenting results of petrologic, geochemical, geophysical, structural and isotopic researches on orogenic continental and ophiolitic peridotites, abyssal peridotites and mantle xenoliths. Preliminary List of Solicited Speakers Co-Sponsorship General Statement The information contained hereafter has been compiled and uploaded by the Session Organizers via the "Organizer Session Form". The Session Organizers have therefore the sole responsibility that this information is true and accurate at the date of publication, and the conference organizer cannot accept any legal responsibility for any errors or omissions that may be made, and he makes no warranty, expressed or implied, with regard to the material published. Back to Session Programme

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