1. Department of Geology and Geophysics, Louisiana State University, Baton Rouge, Louisiana 70803, USA
2. School of Earth Sciences, China University of Geosciences, Wuhan, 430074, China
3. Department of Geography and Berkeley Atmospheric Sciences Center, University of California, Berkeley, California 94720, USA
4. Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
5. Center for Integrative Geosciences, University of Connecticut, Storrs, Connecticut 06269, USA