NOFFKE, Nora1, AWRAMIK, Stanley A.2, GALANTE, Douglas3, CALLEFO, Flavia3, HICKMAN-LEWIS, Keyron4, REIS, Humberto5, SANCHEZ, Evelyn6, WESTALL, Frances7 and WHITEHOUSE, Martin J.8, (1)Ocean & Earth Sciences, Old Dominion University, 4600 Elkhorn Avenue, Norfolk, VA 23529, (2)Earth Sciences, University of California, Santa Barbara, CA 93106, (3)NATIONAL SYNCHROTRON LIGHT LABORATORY, Campinas, Sao Paulo, 13083-100, Brazil, (4)Department of Earth Sciences, Natural History Museum, London, United Kingdom, (5)School of Mines, Universidade Federal de Ouro Preto, Belo Horizonte, Minas Gerais 35400-000, Brazil, (6)Institute of Science and Technology, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Minas Gerais, CEP 39100-000, Brazil, (7)Center for Molecular Biophysics, University of Orleans, Orleans, CS80054, France, (8)Department of Geosciences, Swedish Museum of Natural History, Stockholm, SE-104 05, Sweden