Paleoproterozoic (~1.88Ga) felsic volcanism of the Iricoumé Group in the Pitinga Mining District area, Amazonian Craton, Brazil: insights in ancient volcanic processes from field and petrologic data

The Iricoumé Group correspond to the most expressive Paleoproterozoic volcanism in the Guyana Shield, Amazonian craton. The volcanics are coeval with Mapuera granitoids, and belong to the Uatumã magmatism. They have U-Pb ages around 1880 Ma, and geochemical signatures of α-type magmas. Iricoumé...

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Bibliografski detalji

Glavni autori:	Ronaldo Pierosan, Evandro F. Lima, Lauro V.S. Nardi, Cristina P. de Campos, Artur C. Bastos Neto, José M.T.M. Ferron, Maurício Prado
Format:	Artigo
Jezik:	Inglês
Izdano:	Academia Brasileira de Ciências 2011-09-01
Serija:	Anais da Academia Brasileira de Ciências
Teme:	Craton Amazônico complexo de caldeira ignimbrito vulcanismo Iricoumé depósitos de surge magmatismo Uatumã Amazonian Craton caldera complex ignimbrite Iricoumé volcanism surge deposits Uatumã magmatism
Online pristup:	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000300012
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