Jeffrey Roy Johnson, Johns Hopkins University, Baltimore, MD, United States; Applied Physics Laboratory, Laurel, MD, United States, Abigail Fraeman, California Institute of Technology, Pasadena, CA, United States; NASA Jet Propulsion Laboratory, Pasadena, CA, United States, Briony H. N. Horgan, Purdue University, Department of Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, United States, Melissa S Rice, Western Washington University, Bellingham, WA, United States, Roger C Wiens, Space Science and Applications, Los Alamos, NM, United States; Los Alamos National Laboratory, Los Alamos, NM, United States, Sylvestre Maurice, Institut de Recherche en Astrophysique et Planétologie (IRAP), Toulouse, France and MSL Science Team

Alexander B. Bryk¹, William E Dietrich¹, Michael P Lamb², John P Grotzinger³, Ashwin R Vasavada⁴, Kathryn Stack⁴, Raymond E Arvidson⁵, Christopher Fedo⁶, Valerie K Fox⁷, Sanjeev Gupta⁸, Roger C Wiens⁹, Rebecca M. E. Williams¹⁰, Rachel E. Kronyak¹¹, Kevin W Lewis¹², David M Rubin¹³, William Rapin², Laetitia Le Deit¹⁴, Stephane Le Mouelic¹⁵, Kenneth S Edgett¹⁶, Abigail Fraeman⁴, Steven Banham¹⁷, Madison Hughes¹⁸ and Linda C Kah¹⁹, (1)University of California Berkeley, Earth and Planetary Science, Berkeley, CA, United States, (2)California Institute of Technology, Pasadena, CA, United States, (3)Caltech, Pasadena, CA, United States, (4)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (5)Washington University in St Louis, Earth and Planetary Sciences, St. Louis, MO, United States, (6)University of Tennessee, Department of Earth and Planetary Sciences, Knoxville, TN, United States, (7)California Institute of Technology, Pasadena, United States, (8)Imperial College London, Earth Science and Engineering, London, United Kingdom, (9)Space Science and Applications, Los Alamos, NM, United States, (10)Planetary Science Institute Tucson, Tucson, AZ, United States, (11)University of Tennessee, Knoxville, TN, United States, (12)Johns Hopkins University, Earth and Planetary Sciences, Baltimore, MD, United States, (13)University of California-Santa Cruz, Santa Cruz, CA, United States, (14)University of Nantes, Nantes, France, (15)LPGN Laboratoire de Planétologie et Géodynamique de Nantes, Nantes Cedex 03, France, (16)Malin Space Science Systems, San Diego, CA, United States, (17)Imperial College London, London, SW7, United Kingdom, (18)Washington University, Earth & Planetary Sciences, Saint Louis, MO, United States, (19)University of Tennesse, Earth and Planetary Sciences, Knoxville, TN, United States

Erwin Dehouck¹, Agnes Cousin², Nicolas Mangold³, Jens Frydenvang⁴, Gaël David², Jeremie Lasue², Pierre-Yves Meslin², Olivier Gasnault², Valerie Kristen Fox⁵, Kristen A Bennett⁶, Samuel M Clegg⁷, Patrick James Gasda⁷, Sylvestre Maurice² and Roger C Wiens⁷, (1)LGLTPE Laboratoire de Géologie de Lyon : Terre, Planètes et Environnement, Villeurbanne Cedex, France, (2)Institut de Recherche en Astrophysique et Planétologie (IRAP), Toulouse, France, (3)LPGN Laboratoire de Planétologie et Géodynamique de Nantes, Nantes Cedex 03, France, (4)University of Copenhagen, København K, Denmark, (5)California Institute of Technology, Pasadena, CA, United States, (6)USGS Astrogeology Science Center, Flagstaff, AZ, United States, (7)Los Alamos National Laboratory, Los Alamos, NM, United States

Kristen A Bennett¹, Valerie Kristen Fox², Alexander B. Bryk³, Christopher Fedo⁴, Ashwin R Vasavada⁵, Erwin Dehouck⁶, Lucy M Thompson⁷, Catherine O'Connell-Cooper⁷, Thomas Bristow⁸, Maëva Millan⁹, Amy McAdam¹⁰, Roger C Wiens¹¹, Christopher H House¹² and Nicolas Mangold¹³, (1)USGS Astrogeology Science Center, Flagstaff, AZ, United States, (2)California Institute of Technology, Pasadena, CA, United States, (3)University of California Berkeley, Earth and Planetary Science, Berkeley, CA, United States, (4)University of Tennessee, Department of Earth and Planetary Sciences, Knoxville, TN, United States, (5)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (6)University Paul Sabatier, Institut de Recherche en Astrophysique et Planétologie, Toulouse, France, (7)University of New Brunswick, Fredericton, NB, Canada, (8)NASA Ames Research Center, Moffett Field, CA, United States, (9)NASA Goddard Space Flight Center, Greenbelt, United States, (10)NASA Goddard SFC, Greenbelt, MD, United States, (11)Space Science and Applications, Los Alamos, NM, United States, (12)Pennsylvania State University, Geosciences and Penn State Astrobiology Research Center, University Park, PA, United States, (13)Universite Nantes, Nantes, France

Sean Czarnecki¹, Craig Hardgrove¹ and Patrick James Gasda², (1)Arizona State University, Tempe, AZ, United States, (2)Los Alamos National Laboratory, Los Alamos, NM, United States

Bent Ehresmann, Southwest Research Institute Boulder, Boulder, CO, United States, Don Hassler, Southwest Research Inst, Boulder, CO, United States, Cary Zeitlin, Leidos Innovations Corporation, Houston, TX, United States, Daniel Matthiae, DLR, Cologne, Germany, Robert F Wimmer-Schweingruber, University of Kiel, Institute for Experimental and Applied Physics, Kiel, Germany, Jingnan Guo, USTC University of Science and Technology of China, Hefei, China, Henning Lohf, University of Kiel, Kiel, Germany and Gunther Reitz, German Aerospace Center DLR Cologne, Cologne, Germany

Maëva Millan^1,2, Paul R Mahaffy³, Caroline Freissinet⁴, Daniel Patrick Glavin⁵, Arnaud Buch⁶, Cyril Szopa⁷, Anushree Srivastava², Chad Pozarycki², Slavka C Andrejkovicova⁸, Amy McAdam³, Samuel Teinturier⁹, Charles Malespin⁹, Ross H Williams⁹, Amy J Williams¹⁰, David Coscia⁴, Jennifer L Eigenbrode⁹, Eric Raaen⁹, Jason P Dworkin⁵, Rafael Navarro-Gonzalez¹¹ and Sarah Johnson¹, (1)Georgetown University, Washington, DC, United States, (2)NASA Goddard Space Flight Center, Greenbelt, United States, (3)NASA Goddard SFC, Greenbelt, MD, United States, (4)LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales, Paris Cedex 05, France, (5)NASA Goddard Space Flight Center, Solar System Exploration Division, Greenbelt, MD, United States, (6)CentraleSupelec, Gif-sur-Yvette, France, (7)Université Versailles St-Quentin, Sorbonne Universités, UPMC Univ. Paris 06, CNRS, LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales, Paris, France, (8)Universities Space Research Association Greenbelt, Greenbelt, MD, United States, (9)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (10)Univeristy of Florida, Department of Geological Sciences, Gainesville, United States, (11)Universidad Nacional Autonoma de Mexico, Mexico City, EM, Mexico

Kathryn Stack¹, Raymond E Arvidson², Kristen A Bennett³, Alexander B. Bryk⁴, Kenneth S Edgett⁵, Christopher Fedo⁶, Valerie K Fox⁷, Abigail Fraeman⁸, Christopher H House⁹, Jason Rabinovitch¹, Robert J Sullivan Jr¹⁰, Jason Van Beek⁵ and Rebecca M. E. Williams¹¹, (1)Jet Propulsion Laboratory, Pasadena, CA, United States, (2)Washington University in St Louis, Earth and Planetary Sciences, St. Louis, MO, United States, (3)Arizona State University, Tempe, AZ, United States, (4)University of California Berkeley, Earth and Planetary Science, Berkeley, CA, United States, (5)Malin Space Science Systems, San Diego, CA, United States, (6)University of Tennessee, Department of Earth and Planetary Sciences, Knoxville, TN, United States, (7)California Institute of Technology, Pasadena, United States, (8)California Institute of Technology, Pasadena, CA, United States, (9)Pennsylvania State University, Geosciences and Penn State Astrobiology Research Center, University Park, PA, United States, (10)Cornell University, CCAPS, Ithaca, NY, United States, (11)Planetary Science Institute Tucson, Tucson, AZ, United States

Thomas Bristow¹, Elizabeth B Rampe², John P Grotzinger³, Valerie K Fox⁴, Kristen A Bennett⁵, Albert Yen⁶, Richard C Walroth¹, Ashwin R Vasavada⁶, David Vaniman⁷, Valerie Tu⁸, Allan H Treiman⁹, Michael Thorpe¹⁰, Shaunna M Morrison¹¹, Richard V Morris², Douglas W Ming², Amy McAdam¹², Charles Malespin¹³, Paul R Mahaffy¹², Robert Hazen¹¹, Sanjeev Gupta¹⁴, Robert T Downs¹⁵, Gordon Downs¹⁶, David Des Marais¹⁷, Joy A Crisp¹⁸, Patricia Craig¹⁹, Steve Chipera²⁰, Nicholas Castle²¹, David Frederick Blake¹ and Cherie Achilles¹³, (1)NASA Ames Research Center, Moffett Field, CA, United States, (2)NASA Johnson Space Center, Houston, TX, United States, (3)Caltech, Pasadena, CA, United States, (4)California Institute of Technology, Pasadena, United States, (5)Arizona State University, Tempe, AZ, United States, (6)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (7)Planetary Science Institute, Tuscon, CA, United States, (8)Jacobs at NASA Johnson Space Center, Houston, United States, (9)Lunar & Planetary Inst, Houston, TX, United States, (10)NASA JSC, Houston, TX, United States, (11)Carnegie Institution for Science, Geophysical Laboratory, Washington, DC, United States, (12)NASA Goddard SFC, Greenbelt, MD, United States, (13)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (14)Imperial College London, Earth Science and Engineering, London, United Kingdom, (15)University of Arizona, Tucson, AZ, United States, (16)University of Arizona, Tucson, United States, (17)NASA Ames, Mountain View, CA, United States, (18)Jet Propulsion Laboratory, Pasadena, CA, United States, (19)Planetary Science Institute Tucson, Tucson, United States, (20)Chesapeake Energy, Oklahoma City, OK, United States, (21)Lunar and Planetary Institute, Houston, TX, United States

Christina Seeger¹, Melissa S Rice², Mason Starr², Cory M. Hughes² and Katelyn Frizzell², (1)Western Washington University, Geology, Bellingham, WA, United States, (2)Western Washington University, Bellingham, WA, United States

Albert S Yen¹, Lucy M Thompson², Ralf Gellert³, Jeff A Berger⁴, David Frederick Blake⁵, Michael McCraig⁴, Douglas W Ming⁶, Richard V Morris⁶, Shaunna M Morrison⁷, Catherine O'Connell-Cooper², John G Spray², Scott VanBommel⁸ and David Vaniman⁹, (1)Jet Propulsion Laboratory, Pasadena, CA, United States, (2)University of New Brunswick, Fredericton, NB, Canada, (3)University of Guelph, Guelph, ON, Canada, (4)University of Guelph, Guelph, Canada, (5)NASA Ames Research Center, Moffett Field, CA, United States, (6)NASA Johnson Space Center, Houston, TX, United States, (7)Carnegie Institution for Science, Geophysical Laboratory, Washington, DC, United States, (8)Washington University in St. Louis, St. Louis, United States, (9)Planetary Science Institute, Tuscon, CA, United States

Nathaniel Stein¹, John P Grotzinger¹, Daven Patel Quinn², Christopher Fedo³, Kathryn Stack⁴, Lauren A Edgar⁵, Abigail Fraeman⁴ and Bethany L Ehlmann¹, (1)California Institute of Technology, Geological and Planetary Sciences, Pasadena, CA, United States, (2)University of Wisconsin – Madison, Madison, WI, United States, (3)University of Tennessee, Department of Earth and Planetary Sciences, Knoxville, TN, United States, (4)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (5)USGS, Astrogeology, Flagstaff, AZ, United States

Brad Sutter¹, Amy McAdam², Douglas W Ming³, Christopher Fedo⁴, Christopher H House⁵, Rafael Navarro-Gonzalez⁶, Jennifer L Eigenbrode⁷, Paul R Mahaffy², Elizabeth B Rampe³, Heather B. Franz⁷, Caroline Freissinet⁸, Doug Archer Jr.¹, Charles Malespin⁷, Jennifer C Stern⁷ and Daniel Patrick Glavin⁹, (1)Jacobs Technology, NASA Johnson Space Center, Houston, TX, United States, (2)NASA Goddard SFC, Greenbelt, MD, United States, (3)NASA Johnson Space Center, Houston, TX, United States, (4)University of Tennessee, Department of Earth and Planetary Sciences, Knoxville, TN, United States, (5)Pennsylvania State University, Geosciences and Penn State Astrobiology Research Center, University Park, PA, United States, (6)Universidad Nacional Autonoma de Mexico, Mexico City, EM, Mexico, (7)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (8)NASA Goddard Space Flight Center, NASA Postdoctoral Program, Greenbelt, MD, United States, (9)NASA Goddard Space Flight Center, Solar System Exploration Division, Greenbelt, MD, United States

Bernard Hallet, University of Washington, Department of Civil and Environmental Engineering, Seattle, WA, United States, Ronald S Sletten, University of Washington, Quaternary Research Center, Earth and Space Sciences, Seattle, WA, United States, Nicolas Mangold, Universite Nantes, Nantes, France, Alberto G. Fairén, Centro de Astrobiología (CSIC-INTA), Madrid, Spain, and Dept. of Astronomy, Cornell University, Ithaca, United States and Robert J Sullivan Jr, Cornell University, CCAPS, Ithaca, NY, United States

Madison Leigh Turner, Johns Hopkins University, Baltimore, MD, United States and Kevin W Lewis, Johns Hopkins University, Earth and Planetary Sciences, Baltimore, MD, United States

Christopher Fedo¹, John P Grotzinger², Lauren A Edgar³, Alexander B. Bryk⁴, Valerie K Fox⁵, Kristen A Bennett⁶, Kathryn Stack⁷, Abigail Fraeman⁸, Kenneth S Edgett⁹, Sanjeev Gupta¹⁰, Steven Banham¹¹, Vivian Zheng Sun¹², Christopher H House¹³, Ashwin R Vasavada⁷ and Nathaniel Stein⁸, (1)University of Tennessee, Department of Earth and Planetary Sciences, Knoxville, TN, United States, (2)Caltech, Pasadena, CA, United States, (3)USGS, Astrogeology, Flagstaff, AZ, United States, (4)University of California Berkeley, Earth and Planetary Science, Berkeley, CA, United States, (5)California Institute of Technology, Pasadena, United States, (6)Arizona State University, Tempe, AZ, United States, (7)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (8)California Institute of Technology, Pasadena, CA, United States, (9)Malin Space Science Systems, San Diego, CA, United States, (10)Imperial College London, Earth Science and Engineering, London, United Kingdom, (11)Imperial College London, London, SW7, United Kingdom, (12)Brown University, Providence, RI, United States, (13)Pennsylvania State University, Geosciences and Penn State Astrobiology Research Center, University Park, PA, United States

Edwin S Kite, University of Chicago, Geophysical Sciences, Chicago, IL, United States, Kevin W Lewis, Johns Hopkins University, Earth and Planetary Sciences, Baltimore, MD, United States, Jonathan Sneed, University of Chicago, Chicago, IL, United States, Liam Steele, Open University, Milton Keynes, United Kingdom, David P Mayer, United States Geological Survey, Astrogeology Science Center, Flagstaff, AZ, United States, Timothy I Michaels, SETI Institute, Erie, CO, United States, Leila Gabasova, Universite Grenoble-Alpes, Grenoble, France and Scot CR Rafkin, Southwest Research Institute Boulder, Boulder, CO, United States