Department of Geological Sciences, University of Michigan, 2534 CC Little Building 1100 North University Avenue, Ann Arbor, Mi 48109-1005 United States
Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Ma 02139-4307 United States
Department of Geological Sciences, University of Michigan, 2534 CC Little Building 1100 North University Avenue, Ann Arbor, Mi 48109-1005 United States
Department of Earth Sciences, Boston University, 685 Commonwealth Ave., Boston, Ma 02215 United States
Department of Earth Sciences, Boston University, 685 Commonwealth Ave., Boston, Ma 02215 United States