---------- Forwarded Message ---------- Date: Saturday, February 18, 2006 6:02 PM -0500 From: Rachid AZZOUN <[log in to unmask]> To: [log in to unmask] Subject: call for papers - IGCP 485 MEETING AND FIELD EXCURSION - December 2006 Dear listserv coordinator, May I ask that this meeting notice be posted to the geo-metamorphism listserv? Many thanks for your consideration, Rachid AZZOUN Apologies for multiple postings Cratons are characterized by a rigid behaviour during younger subsequent orogenesis. The strong rheological contrast with surrounding mobile belts induces loci favouring in particular magmatism and mineralization. Also, the craton boundaries may be partly affected, showing characteristics and behaviour intermediate between a craton in the strict sense and a mobile belt, which has been called "metacratonic". Metacratons or metacratonic boundaries are not often recognized and remain poorly understood as they do not fit the classical models. West Africa is an excellent place to tackle this problem: a large part of this area is constituted by the Eburnian (c. 2 Ga) of the WAC surrounded by Pan-African ( 0.8 - 0.55 Ga) mobile belts, with no Mesoproterozoic event at all. This major break in age, and the absence of complications caused by intervening orogenies, is a major advantage when seeking to distinguish between craton building events and the younger destabilization events. The project also represents one particular facet that is the classical objective of IGCP projects: correlation of geology across national borders, especially across countries whose geology is poorly known to the outside world. It deals also with mineral deposits in different tectonic settings. Thus, the special attention will be on the correlations between Morocco, Mauritania, Mali, Algeria, Niger, Guinea, Burkina Faso, Ghana, Togo, Benin and Ivory Coast with field meetings scheduled in the four first cited countries. This showed the major scientific potential and need for correlation studies along the boundaries of the WAC and this was at the base of this IGCP 485. The latter aims of: (1) studying and correlating tectono-stratigraphic terranes along the West African Craton margin particularly the Anti-Atlas, Reguibat rise, Tuareg shield and Ougarta belt ; (2) determining the nature of the boundaries between the Palaeoproterozoic and Neoproterozoic terranes, as well as between the Neoproterozoic and Palaeozoic terranes; (3) defining the role of the shear zones during accretional events, and of the magmatism around the continental margins, and testing the concept of metacraton. (4) deciphering the thermal evolution and geochronology of key lithologies and characteristic mineral deposits. (5) replacing the WAC position during the Neoproterozoic within the framework of the construction of Rodinia and Gondwana supercontinents. (6) Cenozoic volcanism and their relationships with shear zones Deadline for submission of a title: March, 15 2006 Deadline for submission of the paper: June, 15 2006 Organizing Committee of the ICPG 485: Tél: + 213 21 24 76 47 ; Fax : + 213 21 24 76 47; [log in to unmask] Correspondence : Abla Azzouni: [log in to unmask] Khadidja Ouzegane [log in to unmask] Nasser Ennih [log in to unmask] and [log in to unmask] Jean Paul Liégeois [log in to unmask] For more information see http://www.ucd.ac.ma/fs/igcp485/ ---------- End Forwarded Message ---------- Dr Gawen RT Jenkin Leicester Physical Sciences 3rd in First National Student Survey Geology Department Student Recruitment and Schools Liaison Tutor www.le.ac.uk/geology/prospective/welcome.html Universities Representative Mineral Deposits Studies Group mdsg.org.uk Geo-metamorphism Listowner www.jiscmail.ac.uk/lists/geo-metamorphism.html Lecturer in Applied Geology direct dial: +44 (0116) 252 3934 Department of Geology general office: +44 (0116) 252 3933 University of Leicester fax: +44 (0116) 252 3918 LE1 7RH, UK For current PhD projects see www.le.ac.uk/geology/grtj1