Characterizing X-ray Amorphous Phases through Diffraction Profile Modeling: Understanding Weathering and Diagenesis in Gale Crater


Cherie Achilles1, Gordon Downs2, Robert T Downs3, Richard V Morris4, Steve Chipera5, Douglas W Ming4, Elizabeth B Rampe6, Amy McAdam7, Christine A Knudson8, David Frederick Blake9, Thomas Bristow9, David Vaniman10, Albert Yen11, Shaunna Morrison12, Patricia Craig13, Robert Hazen14, Valerie Tu15 and Nicholas Castle16, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)University of Arizona, Tucson, United States, (3)University of Arizona, Department of Geosciences, Tucson, AZ, United States, (4)NASA Johnson Space Center, Houston, TX, United States, (5)Chesapeake Energy, Oklahoma City, OK, United States, (6)NASA Johnson Space Center, Astromaterials Research and Exploration Science Division, Houston, TX, United States, (7)NASA Goddard SFC, Greenbelt, MD, United States, (8)CRESST/University of Maryland College Park, College Park, MD, United States, (9)NASA Ames Research Center, Moffett Field, CA, United States, (10)Planetary Science Institute, Tuscon, CA, United States, (11)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (12)Carnegie Institution for Science Washington, Geophysical Laboratory, Washington, DC, United States, (13)Planetary Science Institute Tucson, Tucson, United States, (14)Carnegie Institution for Science, Geophysical Laboratory, Washington, DC, United States, (15)Jacobs at NASA Johnson Space Center, Houston, United States, (16)Lunar and Planetary Institute, Houston, TX, United States