Angelina Egorova¹, Hrvoje Tkalcic², Benoit Tauzin³ and Thanh-Son Pham², (1)Australian National University, Canberra, ACT, Australia, (2)Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia, (3)Laboratoire de Sciences de la Terre, Université de Lyon I, CNRS and Ecole Normale Supérieure de Lyon, UMR5570, Villeurbanne, France