MATTINSON, James M., Earth Science, Univ of California, Santa Barbara, CA 93106-9630, mattinson@geol.ucsb.edu, mattinson@geol.ucsb.edu

CONDON, Daniel¹, MCLEAN, Noah², SCHOENE, Blair³, BOWRING, S.⁴, MATTINSON, James M.⁵, HIESS, J.¹, NOBLE, S.R.¹, SCHMITZ, M.D.⁶, CROWLEY, J.L.⁷ and PARRISH, Randall¹, (1)NERC Isotope Geoscience Laboratory, British Geological Survey, Keyworth, Nottingham, NG12 5GG, United Kingdom, (2)Earth, Atomospheric, and Planetary Sciences, MIT, 77 Massachusetts Ave, Cambridge, MA 02139, (3)Department of Geosciences, Princeton University, Guyot Hall, Princeton, NJ 08544, (4)Dept. of Earth, Atmospheric & Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, (5)Earth Science, Univ of California, Santa Barbara, CA 93106-9630, (6)Department of Geosciences, Boise State University, Boise, ID 83725, (7)Department of Geosciences, Boise State University, 1910 University Drive, Boise, ID 83725, dcondon@bgs.ac.uk, dcondon@bgs.ac.uk

MCLEAN, Noah M., Dept. of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, CONDON, Daniel, NERC Isotope Geoscience Laboratory, British Geological Survey, Keyworth, Nottingham, NG12 5GG, United Kingdom, SCHOENE, Blair, Department of Geosciences, Princeton University, Guyot Hall, Princeton, NJ 08544 and BOWRING, Samuel A., Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, nmclean@mit.edu, nmclean@mit.edu

CONNELLY, J.N.¹, BIZZARRO, M.¹, IVANOVA, M.² and KROT, A.N.³, (1)Centre for Star and Planet Formation, Geological Museum, Copenhagen University, Øster Voldgade 5-7, 1350 Copenhagen K, Denmark, (2)Vernadsky Institute, 19 Kosygin Str, 119991 Moscow, Russia, (3)Hawai‘i Institute of Geophysics and Planetology, 1680 East-West Rd, Honolulu, HI 96822, connelly@snm.ku.dk, connelly@snm.ku.dk

AMELIN, Yuri, Research School of Earth Sciences, The Australian National University, Bldg 61, Mills Rd, Canberra, 0200, Australia, yuri.amelin@anu.edu.au, yuri.amelin@anu.edu.au

NASDALA, Lutz, Institute of Mineralogy and Crystallography, University of Vienna, Althanstr. 14, Wien, A-1090, Austria, lutz.nasdala@univie.ac.at, lutz.nasdala@univie.ac.at

MUNDIL, Roland¹, KIMBROUGH, David L.², IRMIS, Randall B.³, DENYSZYN, Steven W.⁴ and RENNE, Paul R.¹, (1)Berkeley Geochronology Ctr, 2455 Ridge Rd, Berkeley, CA 94709-1211, (2)Department of Geological Sciences, San Diego State University, San Diego, CA 92182, (3)Natural History Museum of Utah and Department of Geology & Geophysics, University of Utah, 301 Wakara Way, Salt Lake City, UT 84108-1214, (4)School of Earth and Environment, University of Western Australia, 35 Stirling Highway M004, Perth, 6009, Australia, rmundil@bgc.org, rmundil@bgc.org

BLACKBURN, Terrence¹, BOWRING, Samuel A.², ZARTMAN, Robert E.¹ and MCLEAN, Noah M.¹, (1)Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Ave, Building 54, Cambridge, MA 02139, (2)Dept. of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, terrence@mit.edu, terrence@mit.edu

HACKER, Bradley R., Earth Science, University of California, Santa Barbara, CA 93106, KELEMEN, Peter, Lamont Doherty Earth Observatory, Columbia University, Palisades, NY 10964, RIOUX, Matthew, Dept. of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, MCWILLIAMS, Michael O., Earth Science and Resource Engineering, Commonwealth Scientific and Industrial Research Organisation, Pullenvale, QLD 4069, Australia, GANS, Phillip B., Department of Earth Science, University of California, Santa Barbara, Santa Barbara, CA 93106-9630, REINERS, Peter W., Department of Geosciences, University of Arizona, Tucson, AZ 85721, LAYER, Paul, College of Natural Science and Mathematics, Univ of Alaska Fairbanks, PO 755780, Fairbanks, AK 99775, SÖDERLUND, Ulf, Department of Geology, Lund University, Sölvegatan 12, Lund, 22362, Sweden and VERVOORT, Jeffrey D., School of Earth and Environmental Sciences, Washington State University, Pullman, WA 99164, hacker@geol.ucsb.edu, hacker@geol.ucsb.edu

BOWRING, Samuel A.¹, MILLER, Robert B.², MCLEAN, Noah M.³, MATZEL, Jennifer⁴, GORDON, Stacia M.⁵, SHEA, Erin³ and WHITNEY, D.L.⁶, (1)Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, (2)Geology Department, San Jose State University, One Washington Square, San Jose, CA 95192, (3)Dept. of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, (4)Lawrence Livermore National Lab, Livermore, CA 94550, (5)Department of Geological Sciences, University of Nevada, Reno, 1664 N. Virginia, MS 0172, Reno, NV 89557, (6)Department of Geology and Geophysics, University of Minnesota, 310 Pillsbury Dr SE, Minneapolis, MN 55455, sbowring@MIT.EDU, sbowring@MIT.EDU

GIBSON, H.D., Earth Sciences, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada, CROWLEY, J.L., Department of Geosciences, Boise State University, 1910 University Drive, Boise, ID 83725 and BROWN, E.H., Geology, Western Washington University, Bellingham, WA 98225, hdgibson@sfu.ca, hdgibson@sfu.ca

RIOUX, Matthew, Dept. of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, BOWRING, Samuel A., Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 and FARMER, G. Lang, Department of Geological Sciences and CIRES, University of Colorado, Boulder, CO 80309, riouxm@mit.edu, riouxm@mit.edu

MCCLELLAND, William C. and GILOTTI, Jane A., Department of Earth and Environmental Sciences, University of Iowa, Iowa City, IA 52242, bill-mcclelland@uiowa.edu, bill-mcclelland@uiowa.edu

GORDON, Stacia M., Department of Geological Sciences, University of Nevada, Reno, 1664 N. Virginia, MS 0172, Reno, NV 89557, HACKER, Bradley R., Earth Science, University of California, Santa Barbara, CA 93106, LITTLE, Timothy A., School of Earth Sciences, Victoria University, P.O. Box 600, Wellington, 6000, New Zealand, BALDWIN, Suzanne L., Department of Earth Sciences, Syracuse University, Syracuse, NY 13244 and BOWRING, Samuel A., Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, gordon@geol.ucsb.edu, gordon@geol.ucsb.edu