Thin section description. From left to right: Monique Seyler (Petrologist, Institut de Physique du Globe de Paris), Eiichi Takazawa (Petrologist, Niigata University), Bill Meurer (Petrologist, University of Houston), David Graham (Geochemist, Oregon State University), and Margot Godard (Geochemist, Université Montpellier II).