University of Wisconsin, Department of Geology and Geophysics, Madison, WI 53706 United States
University of Wisconsin, Department of Geology and Geophysics, Madison, WI 53706 United States ; Miami University, Department of Geology, Oxford, OH 45056 United States
Universidad Nacional Autónoma de México, Instituto de Geofísica, Mexico City, 04510 Mexico
Universidad de Guadalajara, Departamento de Geografía y Ordenación Territorial, Guadalajara, 44600 Mexico
University of Wisconsin, Department of Geology and Geophysics, Madison, WI 53706 United States ; Universidad Nacional Autónoma de México, Instituto de Geofísica, Mexico City, 04510 Mexico