1983
DOI: 10.25249/0375-7536.1983132106112
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Greenstones as a part of the Minas Supergroup in the Quadrilátero Ferrífero, Minas Gerais, Brazil

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Cited by 16 publications
(20 citation statements)
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“…According to Spier et al (2007), C and O isotopes and REE signatures suggest a marine origin for the sediments with very little terrigenous supply. Minor types of itabirites, including metavolcanic protoliths with N-MORB basalt affinity, were also proposed (Pires, 1983;Cabral and Zeh, 2015b).…”
Section: Introductionmentioning
confidence: 99%
“…According to Spier et al (2007), C and O isotopes and REE signatures suggest a marine origin for the sediments with very little terrigenous supply. Minor types of itabirites, including metavolcanic protoliths with N-MORB basalt affinity, were also proposed (Pires, 1983;Cabral and Zeh, 2015b).…”
Section: Introductionmentioning
confidence: 99%
“…However, recent works have ignored some studies that either recognized metavolcanic rocks, or interpreted certain rocks as volcanic in origin, in spatial association with the Itabira Group (Barbosa, 1949;Cabral, 2003;Guimarães, 1953;Harder & Chamberlin, 1915;Johnson, 1962;Pires, 1983;Poppinga, 1984).…”
mentioning
confidence: 99%
“…Basicamente, esta Formação compõe-se de frlitos e xistos, cujas camadas afloram raramente, só aparecendo nos pontos com fortes declives e nos cortes artificiais. Pires (1983) descreve ocorrências de rochas vulcânicas ligadas a esta Formação.…”
Section: Inferior Atribuidas Aounclassified
“…e os poucos existentes. são controvertidos (Olsen l97l;Pires 1983, Ferreira 1983Cassedanne 1989). Os cristais de topázio irnperial da região de Ouro Preto são encontrados em rochas carbonáticas já totalmente decompostas (Ferreira l99l).…”
Section: -Dtstribuição Viu¡¡dialunclassified
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