1. Department of Geology and Geophysics; Texas A&M University, College Station; TX USA
2. Department of Geosciences; University of Rhode Island; Kingston RI USA
3. Department of Geological Sciences; Michigan State University; East Lansing MI USA
4. Exobiology Branch; Ames Research Center; NASA, Moffett Field CA USA
5. hydroGEOPHYSICS, Inc; Tucson AZ USA