Abstract
At the present, 182 meteorite impact structures have been identified on Earth. In the Brazilian territory, six structures of impact origin are known so far: Araguainha (MT-GO), Vargeão (SC), Vista Alegre (PR), Cerro do Jarau (RS), Serra da Cangalha (TO) and Riachão (MA). Among them, Araguainha impact structure is the one that presents age established by isotopic methods (254±2.5 Ma, U-Pb)…