U-Pb zircon dating of ash fall deposits from the paleozoic paran? basin of Brazil and Uruguay: A reevaluation of the stratigraphic correlations

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dc.contributor.authorRocha-Campos, A. C.
dc.contributor.authorBasei, Miguel Angelo Stipp
dc.contributor.authorNutman, Allen
dc.contributor.authorSantos, P. R.
dc.contributor.authorPassarelli, Claudia Regina
dc.contributor.authorCanile, F. M.
dc.contributor.authorde C.R. da Rosa, O.
dc.contributor.authorFernandes, M. T.
dc.contributor.authorSanta Ana, H.
dc.contributor.authorVeroslavsky, G.
dc.date.accessioned2020-04-01T02:06:51Z
dc.date.available2020-04-01T02:06:51Z
dc.date.issued2019-02-04
dc.date.updated2019-11-25T07:46:48Z
dc.description.abstractAsh fall layers and vitroclastic-carrying sediments distributed throughout the entire Permian stratigraphic range of the Paraná Basin (Brazil and Uruguay) occur in the Tubarão Supergroup (Rio Bonito Formation) and the Passa Dois Group (Irati, Estrada Nova/Teresina, Corumbataí, and Rio do Rasto Formations), which constitute the Gondwana 1 Supersequence. U-Pb zircon ages, acquired by SHRIMP and isotope-dissolution thermal ionization mass spectrometer (IDTIMS) from tuffs within the Mangrullo and Yaguari Formations of Uruguay, are compatible with a correlation with the Irati and parts of the Teresina and Rio do Rasto Formations, respectively, of Brazil. U-Pb zircon ages suggest maximum depositional ages for the samples: (1) Rio Bonito Formation: ages ranging from 295:8 5 3:1 to 304:0 5 5:6 Ma (Asselian, lowermost Permian), consistent with the age range of the Protohaploxypinus goraiensis subzone; (2) Irati Formation: ages ranging from 279:9 5 4:8 to 280:0 5 3:0 Ma (Artinskian, middle Permian), consistent with the occurrence of species of the Lueckisporites virkkiae zone; (3) Rio do Rasto Formation: ages ranging from 266:7 5 5:4 to 274:6 5 6:3Ma (Wordian to Roadian, middle Permian). All the SHRIMP U-Pb zircon ages are consistent with their superimposition order in the stratigraphy, the latest revisions to the Permian timescale (International Commission of Stratigraphy, 2018 version), and the most recent appraisals of biostratigraphic data. The ID-TIMS U-Pb zircon ages from the Corumbataí Formation suggest that U-Pb ages may be 110% younger than interpreted biostratigraphic ages.en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.citationA. C. Rocha-Campos, M. A. S. Basei, A. P. Nutman, P. R. Santos, C. R. Passarelli, F. M. Canile, O. C. R. Rosa, M. T. Fernandes, H. Santa Ana, and G. Veroslavsky, "U-Pb Zircon Dating of Ash Fall Deposits from the Paleozoic Paraná Basin of Brazil and Uruguay: A Reevaluation of the Stratigraphic Correlations," The Journal of Geology 127, no. 2 (March 2019): 167-182. https://doi.org/10.1086/701254en_AU
dc.identifier.issn0022-1376en_AU
dc.identifier.urihttp://hdl.handle.net/1885/202604
dc.language.isoen_AUen_AU
dc.provenancehttp://v2.sherpa.ac.uk/id/publication/3871..."Publisher's pdf can be archived on a non-commercial institutional repository with a 12 month embargo" from SHERPA/RoMEO site (as at 1.4.2020)en_AU
dc.publisherUniversity of Chicago Pressen_AU
dc.rights© 2019 The University of Chicagoen_AU
dc.sourceJournal of Geologyen_AU
dc.titleU-Pb zircon dating of ash fall deposits from the paleozoic paran? basin of Brazil and Uruguay: A reevaluation of the stratigraphic correlationsen_AU
dc.typeJournal articleen_AU
dcterms.accessRightsOpen Accessen_AU
dcterms.dateAccepted2018-10-16
local.bibliographicCitation.issue2en_AU
local.bibliographicCitation.lastpage182en_AU
local.bibliographicCitation.startpage167en_AU
local.contributor.affiliationRocha-Campos, A. C., Universidade de Sao Paoloen_AU
local.contributor.affiliationBasei, Miguel Angelo Stipp, Universidade de Sao Pauloen_AU
local.contributor.affiliationNutman, Allen, College of Science, ANUen_AU
local.contributor.affiliationSantos, P.R., Universidade de São Pauloen_AU
local.contributor.affiliationPassarelli, Cláudia Regina, Universidade de Sao Pauloen_AU
local.contributor.affiliationCanile, F. M., Universidade de Sao Paoloen_AU
local.contributor.affiliationde C.R. da Rosa, O., Universidade de Sao Paoloen_AU
local.contributor.affiliationFernandes, M. T., Universidade de São Pauloen_AU
local.contributor.affiliationSanta Ana, H., Administración Nacional de Combustibles, Alcohol y Petróleoen_AU
local.contributor.affiliationVeroslavsky, G., Universidad de la Repúblicaen_AU
local.contributor.authoremailu8806919@anu.edu.auen_AU
local.contributor.authoruidNutman, Allen, u8806919en_AU
local.description.notesImported from ARIESen_AU
local.identifier.absfor040203 - Isotope Geochemistryen_AU
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciencesen_AU
local.identifier.ariespublicationu3102795xPUB983en_AU
local.identifier.citationvolume127en_AU
local.identifier.doi10.1086/701254en_AU
local.identifier.scopusID2-s2.0-85061309931
local.identifier.uidSubmittedByu3102795en_AU
local.publisher.urlhttps://www.journals.uchicago.edu/en_AU
local.type.statusPublished Versionen_AU

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