1. Institute of Earth and Environmental Sciences–Geology, Universität Freiburg, Albertstraße 23B, 79104 Freiburg, Germany
2. Center for Planetary Systems Habitability & Jackson School of Geosciences, Institute for Geophysics & Department of Geological Sciences, University of Texas at Austin, 10100 Burnet Road Building ROC, Austin, Texas 78758, USA
3. Enthought, Inc., Austin, Texas 78701, USA
4. Géosciences Montpellier, Université de Montpellier, Centre National de la Recherche Scientifique, Université des Antilles, Place E. Bataillon, 34095 Montpellier cedex 5, France
5. Institute of Earth and Environmental Sciences–Geology, Universität Freiburg, Albertstraße 23B, 79104 Freiburg, Germany, and Department of Earth Sciences, University of Cambridge, Cambridge, CB2 3EQ, UK