Lamont-Doherty Earth Observatory, 61 Route 9W, Palisades, NY 10964 United States
Centro de Geociencias Universidad Nacional Autonoma de Mexico, Campus Juriquilla, Querataro, 76230 Mexico
Instituto de Geologia Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, Mexico D. F., 04510 Mexico
Lamont-Doherty Earth Observatory, 61 Route 9W, Palisades, NY 10964 United States ; Department of Earth and Planetary Sciences Harvard University, 20 Oxford St, Cambridge, MA 02138 United States
Lamont-Doherty Earth Observatory, 61 Route 9W, Palisades, NY 10964 United States
Department of Earth and Planetary Sciences Harvard University, 20 Oxford St, Cambridge, MA 02138 United States