HAZEN, Robert M.¹, GREW, Edward S.², DOWNS, Robert T.³, GOLDEN, Joshua³, HYSTAD, Grethe⁴, and SVERJENSKY, Dimitri⁵, (1) Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road, NW, Washington DC, 20015, rhazen@ciw.edu, (2) School of Earth and Climate Sciences, Univ of Maine, 5790 Bryand Center, Orono, ME 04469, (3) Geosciences, University of Arizona, 209 Gould-Simpson Building, Arizona, AZ 85721-0077, (4) Geosciences, University of Arizona, Department of Mathematics, Arizona, AZ 85721-0089, (5) Geophysical Laboratory and Johns Hopkins University, 5251 Broad Branch Road NW, Washington, DC 20015

O'NEILL, Hugh St.C., Research School of Earth Sciences, Australian National University, ACT, Canberra 0200 Australia, hugh.oneill@anu.edu.au

BINA, Craig R., Earth and Planetary Sciences, Northwestern University, 2145 Sheridan Road, Tech F379, Evanston, IL 60208-3130, craig@earth.northwestern.edu and ČÍžKOVÁ, Hana, Dept. of Geophysics, Faculty of Mathematics and Physics, Charles University in Prague, V Holešovičkách 2, Praha 8, 180 00, Czech Republic

HELFFRICH, George, Earth-Life Science Institute, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8559 Japan, george@elsi.jp

GIBBS, G.V., Dept. of Geosciences, Virginia Tech, 4044 Derring Hall, Blacksburg, VA 24061, gvgibbs@vt.edu, ROSS, Nancy L., Geosciences, Virginia Tech, 4044 Derring Hall, Blacksburg, VA 24061-0420, and ROSSO, Kevin M., Pacific Northwest National Laboratory, P.O. Box 999, MSIN K8-96, Richland, WA 99352

BRYNDZIA, L. Taras, Exploration Geosciences, Shell International Exploration and Production, Inc., and Executive Committee Member, Deep Carbon Observatory, Shell Technology Center Houston, 3333 Highway 6 South; R-1002B, Houston, TX 77082, Taras.Bryndzia@Shell.com

COTTRELL, Elizabeth¹, DAVIS, Frederic¹, BIRNER, Suzanne², WARREN, Jessica M.³, and WALL, Kellie¹, (1) Mineral Sciences, Smithsonian Institution, PO Box 37012, National Museum of Natural History MRC-119, Washington, DC 20013-7012, cottrelle@si.edu, (2) Department of Geological and Environmental Sciences, Stanford University, 450 Serra Mall, Stanford, CA 94305, (3) Department of Geological and Environmental Sciences, Stanford University, 450 Serra Mall, Building 320, Stanford, CA 94305

HUNT, Lindsey E., LAMB, William L., and HOLYOKE, Caleb III, Dept. of Geology and Geophysics, Texas A&M University, College Station, TX 77843, lindseyelisehunt@gmail.com

THOMPSON, Elizabeth C., Department of the Geophysical Sciences, The University of Chicago, 5734 S. Ellis Ave, Chicago, IL 60637, ecthompson@uchicago.edu, CAMPBELL, Andrew J., Geophysical Sciences, University of Chicago, 5734 S Ellis Ave, Chicago, IL 60637, and LIU, Zhenxian, Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015

BROWN, J. Michael¹, VANCE, Steven², ABRAMSON, Evan¹, BOLLENGIER, Olivier¹, and SHAW, George H.³, (1) Earth and Space Sciences, University of Washington, Seattle, WA 98195, brown@ess.washington.edu, (2) Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, (3) Geology, Union College, Union College, Schenectady, NY 12308

RUSSELL, Kelly, Earth and Ocean Sciences, The University of British Columbia, 6339 Stores Road, Vancouver, BC V6T 1Z4, Canada, krussell@eos.ubc.ca and GIORDANO, Daniele, Earth Sciences Department, University of Torino, Torino, 10125, Italy

MORSE, Stearns A., Dept. of Geosciences, Univ of Massachusetts, 611 North Pleasant Street, Amherst, MA 01003-9297, tm@geo.umass.edu

GOTTSCHALK, Matthias, Chemistry and Physics of Earth Materials, GFZ German Research Center for Geoscience, Telegrafenberg, Potsdam 14473 Germany, gottschalk@gfz-potsdam.de