UMR-CNRS 6526 Géosciences Azur, Université de Nice-Sophia Antipolis, Nice, 06108 France
Berkeley Geochronology Center, 2455 Ridge Rd., Berkeley, CA 94709 United States ; Department of Earth and Planetary Science, University of California, Berkeley, CA 94720 United States
UMR-CNRS 5570, Ecole Normale Supérieure de Lyon et Université Claude Bernard, Lyon, 69364 France
School of Geological and Computer sciences, University of Natal, Durban, 4041 South Africa
Berkeley Geochronology Center, 2455 Ridge Rd., Berkeley, CA 94709 United States ; Department of Earth and Planetary Science, University of California, Berkeley, CA 94720 United States