Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/11215
Title: U-Pb geochronology of Paraná volcanics combined with trace element geochemistry of the zircon crystals and zircon Hf isotope data.
Authors: Hartmann, Leo Afraneo
Baggio, Sergio Benjamin
Brückmann, Matheus Philipe
Knijnik, Daniel Barbosa
Lana, Cristiano de Carvalho
Massonne, Hans-Joachim
Opitz, Joachim
Pinto, Viter Magalhães
Sato, Kei
Tassinari, Colombo Celso Gaeta
Arena, Karine da Rosa
Keywords: Paraná volcanic province
U-Pb age
εHf
Trace elements
Issue Date: 2019
Citation: HARTMANN, L. A. et al. U-Pb geochronology of Paraná volcanics combined with trace element geochemistry of the zircon crystals and zircon Hf isotope data. Journal of South American Earth Sciences, v. 1, p. 1-21, 2018. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0895981118300622>. Acesso em: 08 fev. 2019.
Abstract: The Paraná volcanic province is a window into mantle and crustal processes in the Cretaceous. The variability and complexity of this province can be determined through the study of minerals. An integrated study of zircon from Paraná lavas (one high-Ti basalt, one low-Ti andesite, one high-Ti rhyodacite and one high-Ti andesite sill) was achieved using backscattered electron imaging, sensitive high resolution ion microprobe (SHRIMP-IIe) for U-Pb geochronology, and laser ablation inductively coupled mass spectrometer (LA-ICPMS) to determine the Lu- Hf isotopes and the trace-element compositions. U-Pb-Hf and trace-element data indicate that zircon crystallized from the magma at approximately 134 Ma. This South American large igneous province originated from the mantle and was contaminated by crust either in the mantle or during ascent and crystallization of magma. Contaminant continental crust had Precambrian age. Trace elements point to a new compositional field for zircon, different from other types of provinces. Examination of volcanic zircon improves our understanding of age and contamination of the Paraná volcanics.
URI: http://www.repositorio.ufop.br/handle/123456789/11215
metadata.dc.identifier.uri2: https://www.sciencedirect.com/science/article/pii/S0895981118300622
metadata.dc.identifier.doi: https://doi.org/10.1016/j.jsames.2018.11.026
ISSN: 0895-9811
Appears in Collections:DEGEO - Artigos de periódicos

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