@inproceedings{inproceedingsca51dd2f, title = {Preliminary 39 Ar/ 40 Ar ages from the Socorro-Guaxupé nappe complex in souheastern Brazil: time-constraints on the final cooling of the southern Tocantins orogenic system and the superposition of the transpressive Rio Paraíba do Sul shear belt}, author = {Fetter, Allen Hutcheson and Hackspacher, Peter and Ebert, Hans Dirk and Dantas, Elton Luiz and Teixeira, Wilson}, year = {2003}, publisher = {CBPM/IRD}, booktitle = {South American Symposium on Isotope Geology} }