CNRS, LGIT BP 53, Grenoble, F-38041, France ; University Joseph Fourier Grenoble, LGIT BP 53, Grenoble, F-38041, France
University of Leicester, Department of Geology, University Road, Leicester, LEI7RH, United Kingdom ; Bullard Laboratories University of Cambridge, Madingley Road, Cambridge, CB30EZ, United Kingdom
Geological Survey of Canada, 615 Booth Street, Ottawa, K1A0e, Canada