STACK, Kathryn M.¹, GROTZINGER, John P.¹, KAH, Linda C.², SUMNER, Dawn Y.³, EDGAR, Lauren A.⁴, RICE, Melissa S.¹, OEHLER, Dorothy Z.⁵, FAIRÉN, Alberto G.⁶, SIEBACH, Kirsten L.¹, and TEAM, MSL Science⁷, (1) Geological and Planetary Sciences, California Institute of Technology, 1200 E. California Blvd, Pasadena, CA 91125, kstack@caltech.edu, (2) Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996, (3) Geology, University of California, Davis, One Shields Avenue, Davis, CA 95616, (4) School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, (5) Astromaterials Research and Exploration Science, NASA - Johnson Space Center, 2101 NASA Parkway, Houston, TX 77058, (6) Department of Astronomy, Cornell University, 426 Space Science Bldg, Ithaca, NY 14853, Ithaca, NY 14853, (7) Jet Propulsion Laboratory, Pasadena, CA 91101

EDGETT, Kenneth S.¹, YINGST, R. Aileen², MAKI, Justin N.³, MINITTI, Michelle E.⁴, ROBINSON, Matthew L.³, KENNEDY, Megan R.¹, KAH, Linda C.⁵, HEYDARI, Ezat⁶, ROWLAND, Scott K.⁷, and SCIENCE TEAM, MSL³, (1) Malin Space Science Systems, P.O. Box 90148, San Diego, CA 92191-0148, edgett@msss.com, (2) Planetary Science Institute, 1700 E. Fort Lowell Rd., Suite 106, Tucson, AZ 85719, (3) Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, (4) Applied Physics Laboratory, Johns Hopkins University, Laurel, MD 20723, (5) Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996, (6) Department of Physics, Atmospheric Sciences, and Geoscience, Jackson State University, P.O. Box 17660, 1400 Lynch Street, Jackson, MS 39217, (7) Geology & Geophysics, University of Hawai'i, 1680 East-West Rd., POST 606, Honolulu, HI 96822

BERGER, Jeff A.¹, CAMPBELL, J.L.², EDGETT, Kenneth S.³, GELLERT, Ralf², KING, Penelope L.⁴, PERRETT, Glynis M.², PRADLER, Irina², SCHMIDT, Mariek⁵, and SCIENCE TEAM, MSL⁶, (1) Department of Earth Sciences, Western University, 1151 Richmond St N, BGS Rm 1026, London, ON N6A 5B7, Canada, jberge44@uwo.ca, (2) Guelph-Waterloo Physics Institute, University of Guelph, Guelph, ON N1G 2W1, Canada, (3) Malin Space Science Systems, P.O. Box 90148, San Diego, CA 92191-0148, (4) Research School of Earth Sciences, Australian National University, Canberra, ACT0200, Australia, (5) Department of Earth Sciences, Brock University, 500 Glenridge Avenue, St. Catharines, ON L2S 3A1, Canada, (6) Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91011

LYNCH, Kennda, SPEAR, John R., and MUNAKATA MARR, Junko, Department of Civil & Environmental Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, CO 80401, klynch@mymail.mines.edu

DES MARAIS, David J., NASA, Ames Research Center, MS 239-4, Bldg. 239, Rm. 321, Moffett Field, CA 94035-0001, David.J.DesMarais@nasa.gov and SCIENCE DEFINITION TEAM, Mars 2020, Geological Sciences, Brown University, Box 1846, Providence, RI 02912

GRANT, John, Center for Earth and Planetary Studies, National Air and Space Museum, Smithsonian Institution, Washington, D. C, DC 20560, grantj@si.edu and SCIENCE DEFINITION TEAM, Mars 2020, Geological Sciences, Brown University, Box 1846, Providence, RI 02912