ROONEY, Alan D.¹, STRAUSS, Justin V.¹, BRANDON, Alan², KARLSTROM, Karl E.³, and MACDONALD, Francis A.⁴, (1) Department of Earth and Planetary Sciences, Harvard University, 20 Oxford Street, Cambridge, MA 02138, alanrooney@fas.harvard.edu, (2) Department of Earth and Atmospheric Sciences, University of Houston, 312 Science and Research Building 1, Houston, TX 77004, (3) Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM 87131, (4) Department of Earth and Planetary Sciences, Harvard University, 20 Oxford St, Cambridge, MA 02138

DEHLER, Carol M.¹, GEHRELS, George², PORTER, Susannah M.³, COX, Grant⁴, HEIZLER, Matthew T.⁵, KARLSTROM, Karl E.⁶, CROSSEY, Laura J.⁶, and TIMMONS, J. Michael⁷, (1) Department of Geology, Utah State University, 4505 Old Main Hill, Logan, UT 84322-4505, carol.dehler@usu.edu, (2) Dept. of Geosciences, University of Arizona, 1040 E. 4th Street, Tucson, AZ 85721, (3) Earth Science, University of California at Santa Barbara, Santa Barbara, CA 93106, (4) Earth and Planetary Sciences, McGill University, 3450 University St, Montreal, QC H3A 0E8, Canada, (5) New Mexico Bureau of Geology, NM Tech, Socorro, NM 87801, (6) Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM 87131, (7) New Mexico Bureau of Geology and Mineral Resources, New Mexico Tech, 801 Leroy Place, Socorro, NM 87801

HOFFMANN, Karl Heinz¹, CONDON, Daniel², PRAVE, A.R.³, and TAPSTER, Simon², (1) Geological Survey of Namibia, Windhoek, Namibia, (2) NERC Isotope Geoscience Laboratory, British Geological Survey, Keyworth, Nottingham, NG12 5GG, United Kingdom, (3) Earth and Environmental Sciences, University of St Andrews, Sy Andrews, KY16 9AL, United Kingdom, ap13@st-andrews.ac.uk

CREVELING, Jessica R., Geological and Planetary Sciences, California Institute of Technology, 1200 E. California Blvd, Pasadena, CA 91125, jcrevel@gps.caltech.edu and MITROVICA, Jerry X., Department of Earth and Planetary Sciences, Harvard University, 20 Oxford Street, Cambridge, MA 02138

TREMBLAY, Marissa M.¹, SWANSON-HYSELL, Nicholas L.¹, MALOOF, Adam C.², CONDON, Daniel³, BEROFF, Sara E.¹, TESEMA, Tadele⁴, HAILEAB, Bereket⁵, ALENE, Mulugeta⁴, and JENKIN, Gawen⁶, (1) Department of Earth and Planetary Science, University of California, Berkeley, Berkeley, CA 94720, mtremblay@berkeley.edu, (2) Department of Geosciences, Princeton University, Princeton, NJ 08544, (3) NERC Isotope Geoscience Laboratory, British Geological Survey, Keyworth, Nottingham, NG12 5GG, United Kingdom, (4) School of Earth Sciences, Addis Ababa University, P.O.B. 1176, Addis Ababa, 1000, Ethiopia, (5) Geology, Carleton College, One North College Street, Northfield, MN 55057, (6) Department of Geology, University of Leicester, University Road, Leicester, LE1 7RH, United Kingdom

HALVERSON, Galen P.¹, COX, Grant², HURTGEN, Matthew T.³, SANSJOFRE, Pierre⁴, KUNZMANN, Marcus¹, STRAUSS, Justin V.⁵, and MACDONALD, Francis A.⁶, (1) Earth and Planetary Sciences, McGill University, 3450 University St, Montreal, QC H3A0E8, Canada, galen.halverson@mcgill.ca, (2) Earth and Planetary Sciences, McGill University, 3450 University St, Montreal, QC H3A 0E8, Canada, (3) Earth and Planetary Sciences, Northwestern University, 2145 Sheridan Rd, Evanston, IL 60208, (4) Laboratoire Domaines Océaniques, Université de Bretagne Occidentale, Place Copernic, Plouzane, 29280, France, (5) Department of Earth and Planetary Sciences, Harvard University, 20 Oxford Street, Cambridge, MA 02138, (6) Department of Earth and Planetary Sciences, Harvard University, 20 Oxford St, Cambridge, MA 02138

HORTON, Forrest, Department of Earth Science, University of California, Santa Barbara, Santa Barbara, CA 93016, forrest.horton@gmail.com

POULTON, Simon W.¹, GUILBAUD, Romain¹, ZHU, Maoyan², and SHIELDS-ZHOU, Graham A.³, (1) School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, United Kingdom, s.poulton@leeds.ac.uk, (2) LPS, Nanjing Institute of Geology and Palaeontology, 39 East Beijing Road, Nanjing, 210008, China, (3) Department of Earth Sciences, University College London, Gower Street, London, WC1E 6BT

SPERLING, Erik A., Dept. of Earth and Planetary Sciences, Harvard University, 20 Oxford Street, Cambridge, MA 02138, sperling@fas.harvard.edu, JOHNSTON, David T., Earth and Planetary Sciences, Harvard University, 20 Oxford Street, Cambridge, MA 02138, KNOLL, Andrew H., Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street, Cambridge, MA 02138, and GIRGUIS, Peter R., Dept of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138

COHEN, Phoebe, Geosciences, Williams College, 947 Main Street, Williamstown, MA 01267, Phoebe.A.Cohen@williams.edu and MACDONALD, Francis A., Department of Earth and Planetary Sciences, Harvard University, 20 Oxford St, Cambridge, MA 02138

MATYS, Emily D.¹, FREEMAN, Katherine H.², MACDONALD, Francis A.³, BIRD, Laurence², MORAN, James J.⁴, and BOSAK, Tanja⁵, (1) Department of Earth, Atmospheric, and Planetary Sciences, MIT, Cambridge, MA 01239, ematys@mit.edu, (2) Department of Geosciences, Pennsylvania State University, 235 Deike Building, University Park, PA 16802, (3) Department of Earth and Planetary Sciences, Harvard University, 20 Oxford St, Cambridge, MA 02138, (4) Pacific Northwest National Laboratory, Richland, WA 99354, (5) Department of Earth, Atmospheric, and Planetary Sciences, MIT, Cambridge, MA 02139

CAMPBELL, Adam J.¹, WADDINGTON, Edwin D.¹, and WARREN, Stephen G.², (1) Earth and Space Sciences, University of Washington, Dept of Earth and Space Science Box 3513, Seattle, WA 98195, campbead@uw.edu, (2) Astrobiology Program, University of Washington, Box 351640, Seattle, WA 98195