*C ian SCHIPPER¹, VOYER, Marion LE², Yves MOUSSALLAM³, James d.l. WHITE⁴, Sveinn p JAKOBSSON⁵, Jun-ichi KIMURA⁶, Qing CHANG⁶ (1.SGEES, Victoria University of Wellington, New Zealand, 2.Carnegie Institute, USA, 3.ISTO-CNRS l'Universite d'Orleans, France, 4.Geology Department, University of Otago, New Zealand, 5.Icelandic Institute of Natural History, Iceland, 6.IFREE - JAMSTEC, Japan)