Journal of Geophysical Research: Planets Supporting Information for Grain Size Variations in the Murray Formation: Stratigraphic Evidence for Changing Depositional Environments in Gale Crater, Mars Frances Rivera-Hernández 1,2 , Dawn Y. Sumner 2 , Nicolas Mangold 3 , Steven G. Banham 4 , Kenneth Edgett 5 , Christopher M. Fedo 6 , Sanjeev Gupta 4 , Samantha Gwizd 6 , Ezat Heydari 7 , Sylvestre Maurice 8 , Marion Nachon 2,9 , Horton Newsom 10 , Juergen Schieber 11 , Katie Stack-Morgan 12 , Nathan Stein 13 , Roger C. Wiens 14 1 Department of Earth Sciences, Dartmouth College, Hanover, NH, USA 2 Earth and Planetary Sciences Department, University of California, Davis, CA, USA 3 Laboratoire de Planétologie et Géophysique de Nantes, Université de Nantes, Nantes, France 4 Imperial College, London, U.K. 5 Malin Space Science Systems, San Diego, CA, USA 6 University of Tennessee in Knoxville, Knoxville, TN, USA 7 Jackson State University, Jackson, MS, USA 8 IRAP, Université de Toulouse, CNRS, UPS, CNES, Toulouse, France 9 Texas A&M, College Station, TX, USA 10 University of New Mexico, Albuquerque, NM, USA 11 Indiana University, Bloomington, IN, USA 12 Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA 13 California Institute of Technology, Pasadena, CA, USA 14 Los Alamos National Laboratory, Los Alamos, NM, USA Contents of this file Text S1 Figure S1 Tables S1 and S4 Additional Supporting Information (Files uploaded separately) Captions for Tables S2 and S3 Introduction This supporting material includes a description of the ChemCam target nomenclature (Text S1), images of some of the calibration rock standards (Fig. S1), the grain size and GMEAN values of GIMS calibration rock standards (Table S1), and GIMS statistics for each stratigraphic locality in the Murray formation (Table S4). Also included are captions for two spreadsheets; one with the ChemCam LIBS data used in the GIMS analysis (Table S2), and the other for the GIMS results (Table S3).