Fission-track dating of Macusanite glasses with plateau and size correction methods

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dc.contributor.authorOsorio, A. M.
dc.contributor.authorIunes, P. J.
dc.contributor.authorBigazzi, G.
dc.contributor.authorHadler, J. C.
dc.contributor.authorLaurenzi, M. A.
dc.contributor.authorNorelli, P.
dc.contributor.authorTello, C. A.
dc.contributor.authorGuedes, S.
dc.contributor.authorPaulo, SR
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionCNR
dc.contributor.institutionUniv Fed Mato Grosso
dc.date.accessioned2014-05-20T13:22:56Z
dc.date.available2014-05-20T13:22:56Z
dc.date.issued2003-09-01
dc.description.abstractTwo Macusanite pebbles (MB1 and MB2) were dated with the fission-track method. Six irradiations were carried out in different nuclear reactors: Pavia (Italy), IPEN-CNEN (Brazil) and IPEN-Lima (Peru). Measurements of the thorium and uranium induced-fission per target nucleus using natural thorium thin films and natural U-doped glasses calibrated against natural uranium thin films, together with lambda(F) of 8.46 x 10(-17) a(-1) were used to determine the ages. The apparent ages were corrected using the plateau and size correction methods. Track measurements were performed by different analysts, using different counting criteria. In addition, tracks were measured on samples which had been submitted to thermal treatment as well as on samples which had not been heated. Thermal treatments were carried out to erase the fossil tracks before neutron irradiation. No significant differences have been found in individual results, using the two Macusanite pebbles and the different nuclear reactors, age correction techniques, analysts, track-counting criteria, and thermal treatments before neutron irradiation. The great majority of the results (14/17) is compatible with the Ar-Ar ages of 5.12 +/- 0.11 and 5.10 +/- 0.11 Ma, Macusanite MB1 and MB2, respectively. However, the fission-track ages are systematically less (similar to8%) than the Ar-Ar ages of the two Macusanite samples studied. (C) 2003 Published by Elsevier Ltd.en
dc.description.affiliationUniv Estadual Campinas, UNICAMP, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil
dc.description.affiliationUniv Estado São Paulo, UNESP, Dept Fis Quim & Biol, BR-19060900 Presidente Prudente, SP, Brazil
dc.description.affiliationCNR, Area Ric, Ist Geosci & Georisorse, I-56124 Pisa, Italy
dc.description.affiliationUniv Fed Mato Grosso, Inst Ciências Exatas & Terra, BR-78070900 Cuiaba, MT, Brazil
dc.description.affiliationUnespUniv Estado São Paulo, UNESP, Dept Fis Quim & Biol, BR-19060900 Presidente Prudente, SP, Brazil
dc.format.extent407-412
dc.identifierhttp://dx.doi.org/10.1016/S1350-4487(03)00161-6
dc.identifier.citationRadiation Measurements. Oxford: Pergamon-Elsevier B.V., v. 36, n. 1-6, p. 407-412, 2003.
dc.identifier.doi10.1016/S1350-4487(03)00161-6
dc.identifier.issn1350-4487
dc.identifier.urihttp://hdl.handle.net/11449/6825
dc.identifier.wosWOS:000185503400074
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofRadiation Measurements
dc.relation.ispartofjcr1.369
dc.relation.ispartofsjr0,509
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectfission-track methodpt
dc.subjecturanium thin filmspt
dc.subjectthorium thin filmspt
dc.subjectmacusanitept
dc.subjectsize correctionpt
dc.subjectplateau correctionpt
dc.titleFission-track dating of Macusanite glasses with plateau and size correction methodsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes1543738193935256[1]
unesp.author.lattes5982597921345094[7]
unesp.author.orcid0000-0003-1426-9476[5]
unesp.author.orcid0000-0002-7753-8584[8]
unesp.author.orcid0000-0002-3727-2574[1]
unesp.author.orcid0000-0002-0369-8999[7]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências e Tecnologia, Presidente Prudentept

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Artigos - Física, Química e Biologia - FCT