Affiliation: | 1. Institute for the Study of the Continents, Cornell University, Ithaca, NY 14853, U.S.A.;2. Geology Department, Northern Illinois University, DeKalb, IL 60115, U.S.A.;3. Department of Geological Sciences, Cornell University, Ithaca, NY 14853, U.S.A.;4. Department of Earth Resources, Colorado State University, Fort Collins, CO 80523, U.S.A. |