C
Ciro Alexandre Ávila
Researcher at Federal University of Rio de Janeiro
Publications - 44
Citations - 856
Ciro Alexandre Ávila is an academic researcher from Federal University of Rio de Janeiro. The author has contributed to research in topics: Zircon & Archean. The author has an hindex of 12, co-authored 39 publications receiving 660 citations.
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A juvenile accretion episode (2.35–2.32 Ga) in the Mineiro belt and its role to the Minas accretionary orogeny: Zircon U–Pb–Hf and geochemical evidences
Wilson Teixeira,Ciro Alexandre Ávila,Ivo Dussin,A.V. Corrêa Neto,Everton Marques Bongiolo,João Orestes Schneider Santos,N.S. Barbosa +6 more
TL;DR: The Resende Costa Orthogneiss and coeval rocks yield U-Pb crystallization ages from 2351-±-48 to 2317−±-16´Ma and coherent Sm−Nd T DM ages between 2.3 and 2.5´Ga.
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Rhyacian (2.23–2.20 Ga) juvenile accretion in the southern São Francisco craton, Brazil: Geochemical and isotopic evidence from the Serrinha magmatic suite, Mineiro belt
Ciro Alexandre Ávila,Wilson Teixeira,Umberto G. Cordani,Candido Augusto Veloso Moura,Ronaldo Mello Pereira +4 more
TL;DR: The Serrinha magmatic suite (Mineiro belt) as mentioned in this paper is a suite of granitoid intrusions, including Brito quartz-diorite, Brumado de Cima granodiorite and coeval granophyre.
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Rhyacian evolution of subvolcanic and metasedimentary rocks of the southern segment of the Mineiro belt, São Francisco Craton, Brazil
Ciro Alexandre Ávila,Wilson Teixeira,Everton Marques Bongiolo,Ivo Dussin,Thayla Almeida Teixeira Vieira +4 more
TL;DR: In this paper, the Tiradentes suite is represented by mafic andesites, dacites, granophyres and tonalites and shows petrographic features of volcanic rocks, such as spherulites, amygdales and porphyritic textures with plagioclase phenocrysts.
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2.17–2.10 Ga plutonic episodes in the Mineiro belt, São Francisco Craton, Brazil: U-Pb ages, geochemical constraints and tectonics
TL;DR: In this paper, geologic information supported by in situ U-Pb zircon ages, and geochemistry coupled with Zircon Hf and Nd-Sr isotopic analyses on orthogneisses, metagranitoids and metadiorites unravel the nature and tectonic significance of a calc-alkaline continental arc in the Mineiro belt.
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U-Pb geochronology and coupled Hf-Nd-Sr isotopic-chemical constraints of the Cassiterita Orthogneiss (2.47-2.41-Ga) in the Mineiro belt, Sao Francisco craton: Geodynamic fingerprints beyond the Archean-Paleoproterozoic Transition
N.S. Barbosa,N.S. Barbosa,Wilson Teixeira,Ciro Alexandre Ávila,P.M. Montecinos,Everton Marques Bongiolo,F.F. Vasconcelos +6 more
TL;DR: The Cassiterita Orthogneiss is the oldest pluton so far found within the Mineiro belt as discussed by the authors, with an in situ zircon U-Pb ages of between 2472 and 2414.