@inproceedings{inproceedingsc025e859, title = {Hydrothermal alteration features in the Vargeão basaltic impact structure (South Brazil): implications about the presence of liquid water in Mars}, author = {Yokoyama, Elder and Nédélec, Anne and Baratoux, David and Berger, Gilles and Trindade, Ricardo Ivan Ferreira da}, year = {2013}, publisher = {American Geophysical Union}, booktitle = {AGU Meeting of the Americas 2013} }