Evidence for Methane Seepage in South Atlantic from the Occurrence of Authigenic Gypsum and Framboidal Pyrite in Deep-sea Sediments

Rafaela Dantas1, Muhammad Bin Hassan2, Francisco William Cruz Sr.3 and Luigi Jovane2, (1)University of Sao Paulo, Institute of Geosciences, Sao Paulo, United States, (2)University of Sao Paulo, Oceanographic Institute, Sao Paulo, Brazil, (3)University of Sao Paulo, Institute of Geosciences, Sao Paulo, Brazil