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Abstract Central Amapa, northern Brazil is located at the boundary between: (a) a northern Paleoproterozoic domain, consisting mainly of granite-greenstones terrains and (b) a southern Archean(More)
O Grupo Iricoume compreende rochas vulcânicas efusivas e piroclasticas, com texturas e estruturas bastante preservadas, que pertence a um extenso evento vulcano-plutonico que marcou a regiao central(More)
Hypabyssal and explosive volcanic rocks of the Iricoume Group crop out in the Western Erepecuru–Trombetas Domain, in the Central Amazonian Province, south of the Guyana Shield. They are part of an(More)