BARNES, Calvin, Geosciences, Texas Tech University, Lubbock, TX 79409-1053, COINT, Nolwenn, Geological Survey of Norway, PO Box 6315 Torgarden, Trondheim, 7491, Norway, BARNES, Melanie, Department of Geosciences, Texas Tech University, Lubbock, TX 79409-1053, CHAMBERLAIN, Kevin R., Department of Geology and Geophysics, University of Wyoming, 1000 University Avenue, Laramie, WY 82071, COTTLE, John, Earth Science, University of California, Santa Barbara, CA 93106, RAMO, Tapani, Geosciences and Geography, Geology and Geophysics Research Program, University of Helsinki, Helsinki, FI-00014, Finland and VALLEY, John, Department of Geoscience, University of Wisconsin-Madison, Madison, WI 53706