11:00 AM - 11:30 AM
*Joachim JACOBS1, Andreas LAEUFER2, Marlina ELBURG3, Wilfried JOKAT4 (1.Department of Earth Science, University of Bergen, PB 7803, N-5020 Bergen, Norway, 2.Bundesanstalt fur Geowissenschaften und Rohstoffe (BGR), Stilleweg 2, D-30655 Hannover, Germany, 3.Department of Geology, University of Johannesburg, Auckland Park 2006, Johannesburg, South Africa, 4.Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germnay)