GROTZINGER, John, Geological and Planetary Sciences, California Institute of Technology, 1200 E. California Blvd, Pasadena, CA 91125, FISCHER, Woodward W., Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125 and FIKE, David A., Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130, grotz@gps.caltech.edu, grotz@gps.caltech.edu

JOHNSTON, David T.¹, MACDONALD, Francis A.², PETACH, Trevor¹, HOFFMAN, Paul F.³, HALLMANN, Christian⁴, SUMMONS, Roger E.⁵ and SCHRAG, Daniel P.¹, (1)Earth and Planetary Sciences, Harvard University, 20 Oxford Street, Cambridge, MA 02138, (2)Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, (3)3271 Wicklow St, Victoria, BC V8X 1E1, Canada, (4)Eaps, MIT, Cambridge, MA 02139, (5)Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, MIT, E25-633, 77 Massachusetts Ave, Cambridge, MA 02139, johnston@eps.harvard.edu, johnston@eps.harvard.edu

BJERRUM, Christian J., Nordic Center for Earth Evolution, and Department of Geography and Geology, University of Copenhagen, Øster Voldgade 10, Copenhagen K, DK-1350, Denmark and CANFIELD, Donald E., Nordic Center for Earth Evolution, Univerisity of Southern Denmark, Campusvej 55, Odense, 5230, Denmark, cjb@geo.ku.dk, cjb@geo.ku.dk

KAH, Linda C., Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996, lckah@utk.edu, lckah@utk.edu

KAUFMAN, Alan J.¹, CORSETTI, Frank A.², TAHATA, Miyuki³, UENO, Yuichro⁴, ISHIKAWA, Tomoko⁵, SAWAKI, Yusuke⁶, MURAKAMI, Kazuki⁴, KOMIYA, Tsuyoshi⁷ and YOSHIDA, Naohiro⁸, (1)Geology Department, University of Maryland, College Park, MD 20742, (2)Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089, (3)Dept. Earth & Planet. Sci, Tokyo Inst. Tech, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan, (4)Tokyo Institute of Technology, Tokyo, 152-8551, Japan, (5)Tokyo, 152-8551, Japan, (6)Dept. Earth & Planet Sci, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan, (7)Earth and Planetary Sciences, Tokyo Institute of Technology, Tokyo, 152-8551, Japan, (8)Yokohama, 226-8502, Japan, kaufman@geol.umd.edu, kaufman@geol.umd.edu

SWART, Peter K., Marine Geology and Geophysics, Rosenstiel School of Marine and Atmopsheric Sciences, University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149 and KENNEDY, Martin, School of Earth and Environmental Science, University of Adelaide, Adelaide, 5005, Australia, pswart@rsmas.miami.edu, pswart@rsmas.miami.edu

JIANG, Ganqing¹, WANG, Xinqiang², SHI, Xiaoying², ZHANG, Shihong² and XIAO, Shuhai³, (1)Department of Geoscience, University of Nevada, Las Vegas, NV 89154-4010, (2)School of Earth Sciences and Resources, China University of Geosciences, Beijing, 100083, China, (3)Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, VA 24061, wxqiang307@yahoo.com.cn, wxqiang307@yahoo.com.cn

SWANSON-HYSELL, Nicholas, Department of Geosciences, Princeton University, Guyot Hall, Princeton, NJ 08544, MALOOF, Adam, Department of Geosciences, Princeton University, Princeton, NJ 08544, ROSE, Catherine V., Dept of Geosciences, Princeton University, Guyot Hall, Princeton, NJ 08544, HALVERSON, Galen P., Earth and Planetary Sciences, McGill University, 3450 University St, Montreal, QC H3A0E8, Canada and HURTGEN, Matthew T., Earth and Planetary Sciences, Northwestern University, 2145 Sheridan Rd, Evanston, IL 60208, nswanson@princeton.edu, nswanson@princeton.edu

HUSSON, Jon, MALOOF, Adam and SCHOENE, Blair, Department of Geosciences, Princeton University, Guyot Hall, Princeton, NJ 08544, jhusson@princeton.edu, jhusson@princeton.edu

BERGMANN, Kristin D., Earth and Planetary Sciences, Harvard University, 51 Botanical Museum, 24 Oxford Street, Cambridge, MA 02138 and FISCHER, Woodward W., Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, kbergmann@fas.harvard.edu, kbergmann@fas.harvard.edu

CORSETTI, Frank A., Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089, LOYD, Sean J., Department of Geological Sciences, California State University Fullerton, Fullerton, CA 92831, MARENCO, Pedro J., Department of Geology, Bryn Mawr College, Bryn Mawr, PA 19010 and HAGADORN, James W., Department of Earth Sciences, Denver Museum of Nature & Science, 2001 Colorado Blvd, Denver, CO 80205, fcorsett@usc.edu, fcorsett@usc.edu

WILLIFORD, Kenneth H., Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109, USHIKUBO, Takayuki, Department of Geoscience, University of Wisconsin, 1215 West Dayton Street, Madison, WI 53706, KOZDON, Reinhard, Department of Geoscience, University of Wisconsin-Madison, Madison, WI 53706, VAN KRANENDONK, Martin J., Geological Survey of Western Australia, 100 Plain St, East Perth, WA 6004, Australia and VALLEY, John W., Department of Geoscience, University of Wisconsin, Madison, WI 53706, Kenneth.H.Williford@jpl.nasa.gov, Kenneth.H.Williford@jpl.nasa.gov

PLANAVSKY, Noah J., Department of Earth Sciences, University of California, Riverside, 900 University Ave, Riverside, CA 92521, LYONS, Timothy W., Department of Earth Sciences, University of California, Riverside, CA 92521 and BEKKER, Andrey, Dept. of Geological Sciences, Univ. of Manitoba, Winnipeg, MB R3T 2N2, Canada, planavsky@gmail.com, planavsky@gmail.com

MALOOF, Adam¹, PORTER, Susannah M.², MOORE, John L.², BOWRING, Samuel A.³, DUDAS, Frank³, HIGGINS, John A.¹ and FIKE, David A.⁴, (1)Department of Geosciences, Princeton University, Princeton, NJ 08544, (2)Earth Science, University of California at Santa Barbara, Santa Barbara, CA 93106, (3)Deptartment of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, (4)Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130, maloof@princeton.edu, maloof@princeton.edu

RUNNEGAR, Bruce¹, SALTZMAN, Matthew R.², KOUCHINSKY, Artem³, YOUNG, Seth A.⁴, KUMP, Lee R.⁵, GILL, Benjamin⁶, LYONS, Timothy W.⁷ and YOUNG, Edward D.¹, (1)Dept. of Earth and Space Sciences and Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, (2)School of Earth Sciences, The Ohio State University, 275 Mendenhall Laboratory, 125 South Oval Mall, Columbus, OH 43210, (3)Dept. of Palaeozoology, Swedish Museum of Natural History, Box 50007, Stockholm, SE-104 05, Sweden, (4)Dept. of Geological Sciences, Indiana University, Bloomington, IN 47405, (5)Dept. of Geosciences and Astrobiology Research Center, Pennsylvania State University, University Park, PA 16802, (6)Dept. of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, (7)Dept. of Earth Sciences, University of California, Riverside, CA 92521, runnegar@ucla.edu, runnegar@ucla.edu

DERRY, Louis A., Earth & Atmospheric Sciences, Cornell University, Snee Hall, Ithaca, NY 14817, lad9@cornell.edu, lad9@cornell.edu