Microscopic evidence of shock metamorphism effects in detrital minerals from the Colônia crater sediments, SP - Velázquez Fernandez, Victor; Riccomini, Claudio; Azevedo Sobrinho, Jose Maria; Rankin, André Stopa; Sallun, Alethéa Ernandes Martins; Hachiro, Jorge; Sant'anna, Lucy Gomes (Congresso Brasileiro de Geologia, 2010)