1. Department of MathematicsTexas A&M UniversityCollege Station Texas USA
2. Department of MathematicsColorado State UniversityFort Collins Colorado USA
3. Department of Earth, Environmental, and Planetary SciencesBrown UniversityProvidence Rhode Island USA
4. Department of Earth SciencesUniversity of California Santa BarbaraSanta Barbara California USA
5. Earth, Atmospheric and Planetary SciencesMassachusetts Institute of TechnologyCambridge Massachusetts USA
6. Department of GeologyUniversity of MarylandCollege Park Maryland USA
7. School of Earth SciencesUniversity of BristolWills Memorial Building, Bristol UK