The influence of methane fluxes on the sulfate/methane interface in sediments from the Rio Grande Cone Gas Hydrate Province, southern Brazil

by Luiz Frederico Rodrigues, João Marcelo Ketzer, Rogerio Véscia Lourega, Adolpho Herbert Augustin, Gesiane Sbrissa, Dennis Miller, Roberto Heemann, Adriano Viana, Antonio Fernando Menezes Freire, Sadoon Morad

Fluid escape structures as possible indicators of past gas hydrate dissociation during the deposition of the Barremian sediments in the Recôncavo Basin, NE, Brazil

by Antonio Fernando Menezes Freire, Carlson de Matos Maia Leite, Flávio Miranda de Oliveira, Márcio Ferreira Guimarães, Paulo da Silva Milhomem, Raphael Pietzsch, Roberto Salvador Francisco d’Ávila