Evidence of shock metamorphism effects in allochthonous breccia deposits from the colônia crater, São Paulo, Brazil - Velázquez Fernandez, Victor; Riccomini, Claudio; Azevedo Sobrinho, Jose Maria; Pletsch, Mikhaela A. J. S.; Sallun, Alethéa Ernandes Martins; Sallun Filho, William; Hachiro, Jorge (International Journal of Geosciences, 2013)