Brown et al., 2011 Granulites, partial melting and rheology of the lower crust

Brown et al., 2011 Granulites, partial melting and rheology of the lower crust

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Unformatted text preview: Granulites, partial melting and the rheology of the lower crust M. BROWN, 1 K. SCHULMANN 2 AND R. W. WHITE 3 1 Laboratory for Crustal Petrology, Department of Geology, University of Maryland, College Park, MD 20742-4211, USA (mbrown@umd.edu) 2 Institut de Physique du Globe de Strasbourg, IPGS - UMR 7516, CNRS et Universite ´ de Strasbourg (EOST), 1 Rue Blessig, 67084 Strasbourg, France 3 Institute of Geoscience, University of Mainz, D-55099 Mainz, Germany This Special Issue of the Journal of Metamorphic Geology comprises seven invited papers from the Ô Granulites and Granulites 2009 Õ conference held in Hruba ´ Ska ´ la Chateau, Czech Republic, during the period 13–15 July 2009, and convened by Karel Schulmann (University of Strasbourg), Michael Brown (University of Maryland), Richard White (University of Mainz), Ondrej Lexa (Charles Uni- versity, Prague) and Patrick O Õ Brien (University of Potsdam). The purpose of the conference was to re- view and discuss recent advances in understanding crustal processes at P–T conditions characteristic of the granulite facies, including high-pressure and ultra high temperature granulites, with particular reference to the rheology of the crust and orogenic processes at these conditions. The conference was preceded by a 3-day short course on modelling of deformation microstructures using the Elle software and on the quantification of metamorphic microstructures using the Poly Lx soft- ware. The short course was given by Paul Bons from the University of Tu ¨ bingen and Ondrej Lexa from Charles University, Prague during the period 9–12 July 2009. The short course was followed by a 3-day field excursion to examine granulites of the Saxony granu- lite massif, the Erzgebirge and the Egger complex, and to visit the South Bohemian granulite massifs, with a special focus on the Blansky Les granulite – the largest felsic granulite massif in Europe. The pre-conference field excursion was led by Patrick O Õ Brien from the University of Potsdam, Jiri Konopasek, Jan Franek and Vojtech Janousek from the Czech Geological Survey, and Karel Schulmann from the University of Strasbourg. The conference was followed by a 3-day field excursion to the Austrian St. Leonhard granulite massif and the Drosendorf window, and the Gfo ¨ hl unit and the associated Varied and Monotonous group rocks, at the eastern margin of the Bohemian massif, where structures related to channel flow and extrusion of orogenic lower crust at the head of the channel were examined. Ondrej Lexa and Martin Racek from Charles University, Prague, and Karel Schulmann from the University of Strasbourg led this post- conference excursion. Following the second field excursion, Roger Powell from the University of Mel- bourne, Tim Holland from the University of Cam- bridge and Richard White from the University of Mainz led a short course on Ô Calculating Metamorphic Mineral Equilibria Õ held at Charles University, Prague, during the period 20–23 July 2009.during the period 20–23 July 2009....
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Brown et al., 2011 Granulites, partial melting and rheology of the lower crust

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