Camila Oliveira^1,2, Catia Fernandes Barbosa³, Anna Paula Soares Cruz⁴, Crisogono Vasconcelos⁵, Timothy I Eglinton⁵ and Daniel Ariztegui⁶, (1)Universidade Federal Fluminense, Department of Geochemistry, Niteroi, Brazil, (2)University of Geneva, Department of Earth Science, Geneva, Switzerland, (3)UFF Federal Fluminense University, Geoquimica, Niteroi, Brazil, (4)California State University Bakersfield, Bakersfield, CA, United States, (5)ETH Swiss Federal Institute of Technology Zurich, Geological Institute, Zurich, Switzerland, (6)University of Geneva, Geneva, Switzerland