Search Results - "Pierosan, Ronaldo"
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The 1.88 Ga Uatumã Magmatism in the Serra dos Magalhães region: petrology and implications to the extension of the south-eastern edge of the Amazonian Craton
Published in Brazilian journal of geology (2021)“…Abstract The Amazonian Craton (AC) is a Pre-Cambrian tectonic segment that extends over 4.3 × 105 km2 at the northern portion of the South American Platform…”
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Geologia e petrologia dos gnaisses da região de São Valério da Natividade, Tocantins
Published in Geologia USP. Série Científica (13-06-2019)“…A região de São Valério da Natividade no estado de Tocantins está relacionada ao Maciço de Goiás e ao Bloco Cavalcante-Natividade, compondo embasamento da…”
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Petrology, geochemistry, and geochronology of Paleoproterozoic volcanic and granitic rocks (1.89–1.88 Ga) of the Pitinga Province, Amazonian Craton, Brazil
Published in Journal of South American earth sciences (01-03-2010)“…This paper presents geochemical, petrographic, and geochronological data on the Uatumã magmatism in the Pitinga Province, where it is represented by volcanic…”
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Geology and petrology of the Salto do Céu Suite: tectonic and stratigraphic implications on the SW Amazonian Craton
Published in Brazilian journal of geology (01-07-2018)“…The basic rocks of the Salto do Céu Suite outcrop as sills and flows in the southwestern Amazon Craton, Rondonian-San Ignacio Province, with an age of about…”
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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
Published in Anais da Academia Brasileira de Ciências (01-09-2011)“…The Iricoumé Group correspond to the most expressive Paleoproterozoic volcanism in the Guyana Shield, Amazonian craton. The volcanics are coeval with Mapuera…”
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Petrogenesis, U-Pb and Sm-Nd geochronology of the Furna Azul Migmatite: partial melting evidence during the San Ignácio Orogeny, Paraguá Terrane, SW Amazon Craton
Published in Brazilian journal of geology (01-06-2016)“…The Furna Azul Migmatite is a ~10 km2 complex located in Pontes e Lacerda city, Mato Grosso, Brazil. It belongs to Paraguá Terrane, limit with Rio Alegre…”
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Granito Aragão — Suíte intrusiva Nhandú — um granito oxidado, tipo A2, de 1967 a 1964 Ma na Província Aurífera Alta Floresta — Cráton Amazônico
Published in Geologia USP. Série científica (14-03-2018)“…O Granito Aragão, localizado na Província Aurífera Alta Floresta (PAAF), consiste de um stock granítico de ~ 80 km2, de granulação média a grossa, textura…”
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Geoquímica e geocronologia U-Pb (SHRIMP) de granitos da região de Peixoto de Azevedo: Província Aurífera Alta Floresta, Mato Grosso
Published in Brazilian journal of geology (01-09-2014)“…A análise de dados petrográficos, geoquímicos e geocronológicos de granitos do Domínio Peixoto de Azevedo, Mato Grosso, na porção leste da Província Aurífera…”
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Reoignimbritos e ignimbritos de alto grau do vulcanismo Acampamento Velho, RS: origem e temperatura de formação
Published in Brazilian journal of geology (2011)“…Resumo: A Formação Acampamento Velho é constituída por depósitos vulcânicos neoproterozoicos dominantemente ácidos, emplaçados em condições subaéreas sobre o…”
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Paleoproterozoic (~2.0 Ga) volcano‐plutonism in the southeastern region of the Amazon Craton: Petrological aspects and geotectonic implications
Published in Geological journal (Chichester, England) (01-06-2020)“…Detailed studies on the volcano‐plutonic associations of the Amazon Craton (AC) have been conducted since the 1980s. Since then, several issues concerning the…”
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Petrology of the Colíder Group volcanic successions in the northernmost Mato Grosso, Brazil: A contribution to the knowledge of the felsic volcanism of the Alta Floresta Gold Province
Published in Journal of South American earth sciences (01-01-2019)“…The Colider Group ignimbrites and rhyolites, located between Guarantã do Norte and Serra do Cachimbo, Brazil derives from a felsic magmatism with a wide…”
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Magmatic microgranular enclaves of the northeast of Mato Grosso, Brazil, SE Amazonian Craton: Insights into the magmatism of the Uatumã Supergroup on the basis of field and petrological data
Published in Journal of South American earth sciences (01-10-2017)“…Felsic and mafic microgranular enclaves occurs hosted in Paleoproterozoic felsic volcanic and plutonic rocks of the Iriri Group and Rio Dourado Intrusive Suite…”
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Recognition and characterisation of high-grade ignimbrites from the Neoproterozoic rhyolitic volcanism in southernmost Brazil
Published in Journal of South American earth sciences (01-11-2013)“…Neoproterozoic magmatism in southern Brazil is associated with translithospheric shear belts and strike-slip basins in a post-collisional setting related to…”
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Geochemistry of Palaeoproterozoic volcanic rocks of the Iricoumé Group, Pitinga Mining District, Amazonian craton, Brazil
Published in International geology review (01-07-2011)“…The Iricoumé Group includes 1.88 Ga volcanic units of the Iricoumé-Mapuera volcano-plutonic association, part of the Uatumã magmatic series in the Guyana…”
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Potassic and low- and high-Ti mildly alkaline volcanism in the Neoproterozoic Ramada Plateau, southernmost Brazil
Published in Journal of South American earth sciences (01-03-2005)“…Ramada Plateau Neoproterozoic volcanism represents a portion of the shoshonitic and mildly alkaline magmatism related to postcollisional events of the…”
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Geologia e petrologia do Granito São Vicente na região do Parque Estadual Águas Quentes, estado de Mato Grosso, Brasil
Published in Geologia USP. Série Científica (01-09-1917)“…A análise petrogenética das rochas hipabissais do Granito São Vicente na região do Parque Estadual Águas Quentes permitiu o reconhecimento e a caracterização…”
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