SPEAR, Frank, Earth and Environmental Sciences, Rensselaear Polytechnic Institute, 110 8th St, Troy, NY 12180, spearf@rpi.edu, spearf@rpi.edu

HOISCH, Thomas D.¹, CRUZ-URIBE, Alicia M.², KELLY, Eric D.³, MURRAY II, Timothy T.² and WELLS, Michael L.⁴, (1)School of Earth Sciences and Environmental Sustainability, Northern Arizona University, P.O. Box 4099, Flagstaff, AZ 86011, (2)Geosciences Department, Pennsylvania State University, University Park, PA 16802, (3)Geological Sciences, University of Texas at Austin, 4102 Avenue H Unit B, Austin, TX 78751, (4)Dept. of Geoscience, Univ of Nevada, Las Vegas, 4505 South Maryland Parkway, Las Vegas, NV 89154-4010, thomas.hoisch@nau.edu, thomas.hoisch@nau.edu

ANDRONICOS, Chris, Earth and Atmospheric Sciences, Cornell University, Snee Hall, Ithaca, NY 14853, WOLF, David E., Earth and Atmospheric Sciences, Cornell University, 4154 Snee Hall, Ithaca, NY 14853-1504 and HOLLISTER, Lincoln S., Geosciences, Princeton University, Princeton, NJ 08544, ca98@cornell.edu, ca98@cornell.edu

KARABINOS, Paul, Dept. Geosciences, Williams College, Williamstown, MA 01267, pkarabin@williams.edu, pkarabin@williams.edu

LAPEN, Thomas J., Department of Earth and Atmospheric Sciences, University of Houston, 312 Science and Research 1, University of Houston, Hosuton, TX 77204-5007, SPRINGER, Kellen, Department of Earth and Atmospheric Sciences, University of Houston, 4800 Calhoun Rd, Houston, TX 77204, BAUMGARTNER, Lukas, Institute of Earth Sciences, University of Lausanne, Lausanne, CH-1015, Switzerland and JOHNSON, Clark, M., Department of Geoscience, University of Wisconsin-Madison, NASA Astrobiology Institute, 1215 W. Dayton St, Madison, WI 53706, tjlapen@uh.edu, tjlapen@uh.edu

GATEWOOD, Mathew and STOWELL, Harold H., Department of Geological Sciences, Univ of Alabama, Box 870338, Tuscaloosa, AL 35487-0338, matthewpgatewood@gmail.com, matthewpgatewood@gmail.com

BAXTER, Ethan F.¹, POLLINGTON, Anthony D.², DRAGOVIC, Besim³, GATEWOOD, Mathew⁴, INGLIS, Jeremy⁵, STOWELL, Harold H.⁴ and HIRSCH, David M.⁶, (1)Earth and Environmental Science, Boston College, 140 Commonwealth Ave, Boston, MA 02467, (2)Nuclear and Radiochemistry, Los Alamos National Laboratory, PO Box 1663, Los Alamos, NM 87545, (3)Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, VA 24061, (4)Department of Geological Sciences, Univ of Alabama, Box 870338, Tuscaloosa, AL 35487-0338, (5)Earth Sciences, Boston University, 685 Commonwealth Ave, Boston, MA 02215, (6)Geology, Western Washington University, 516 High St, Bellingham, WA 98225, efb@bu.edu, efb@bu.edu

RUSSELL, Ashley K., KITAJIMA, Kouki, MEDARIS Jr., L. Gordon and VALLEY, John W., Department of Geoscience, University of Wisconsin-Madison, 1215 W Dayton St, Madison, WI 53706, ashleyrussell175@gmail.com, ashleyrussell175@gmail.com

DUMOND, Gregory, Department of Geosciences, University of Arkansas, 18A Ozark Hall, Fayetteville, AR 72701, WILLIAMS, Michael L., Department of Geosciences, University of Massachusetts, Amherst, 611 North Pleasant Street, Amherst, MA 01003, GONCALVES, Philippe, Département des Géosciences, Université de Franche-Comté, 16 route de Gray, Besançon, 25030, France and JERCINOVIC, Michael J., Dept. of Geosciences, University of Massachusetts, Amherst, 611 North Pleasant Street, 233 Morrill Science Center, Amherst, MA 01003-9297, gdumond@mit.edu, gdumond@mit.edu

CARLSON, William D., Department of Geological Sciences, University of Texas at Austin, 1 University Station C9000, Austin, TX 78712, wcarlson@mail.utexas.edu, wcarlson@mail.utexas.edu

CHAKRABORTY, Sumit and BORINSKI, S., Institut fuer Geologie, Mineralogie und Geophysik, Ruhr Universitaet Bochum, Universitaetsstrasse 150, Bochum, D-447801, Germany, sumit.chakraborty@rub.de, sumit.chakraborty@rub.de

GOEKE, Elizabeth R., Geology, Gustavus Adolphus College, 800 W. College Ave, St. Peter, MN 56082 and FOSTER, C. Thomas, Geology, Univ. of Iowa, 121 Trowbridge Hall, Iowa City, IA 52242, egoeke@gustavus.edu, egoeke@gustavus.edu

VORHIES, Sarah, Geology and Geophysics, Yale University, P.O. Box 208109, New Haven, CT 06520 and AGUE, Jay J., Department of Geology and Geophysics, Yale University, PO Box 208109, New Haven, CT 06520-8109, sarah.vorhies@yale.edu, sarah.vorhies@yale.edu