Cynthia J Ebinger, Tulane University of Louisiana, New Orleans, LA, United States, Miriam Christina Reiss, Goethe University Frankfurt, Frankfurt, Germany, Christel Tiberi, Universite Montpellier 2, Montpellier, France, Mary Karanja, University of Nairobi, Nairobi, Kenya, Jolante van Wijk, New Mexico Institute of Mining and Technology, Earth and Environmental Science, Socorro, NM, United States, Claire A Currie, University of Alberta, Department of Physics, Edmonton, AB, Canada, Steven W Roecker, Rensselaer Polytechnic Inst, Earth & Environmental Sciences, Troy, NY, United States, James D Muirhead, University of Auckland, Auckland, New Zealand and Tobias P Fischer, University of New Mexico, Department of Earth and Planetary Sciences, Albuquerque, NM, United States