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U and Th thin film neutron dosimetry for fission-track dating: application to the age standard Moldavite |
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| Authors: | P.J. Iunes G. Bigazzi J.C. Hadler Neto M.A. Laurenzi M.L. Balestrieri P. Norelli A.M. Osorio Araya S. Guedes C.A. Tello S. S.R. Paulo P.A.F.P. Moreira R. Palissari E.A.C. Curvo |
| Affiliation: | aInstituto de Fisica Gleb Wataghin, Universidade Estadual de Campinas, UNICAMP, 13083-970, Campinas—SP, Brazil bIstituto di Geoscienze e Georisorse, CNR, Area della Ricerca di Pisa, Via G. Moruzzi 1, 56124 Pisa, Italy cDepartamento de Ciências Ambientais, Universidade do Estado de São Paulo, 19060-900 Presidente Prudente—SP, Brazil dInstituto de Ciências Exatas e da Terra, Universidade Federal do Mato Grosso, UFMT, 78070-900 Cuiabá—MT, Brazil |
| Abstract: | Neutron dosimetry based on U and Th thin films was used for fission-track dating of the age standard Moldavite, the central European tektite, from the Middle Miocene deposit of Jankov (southern Bohemia, Czech Republic). Our fission-track age () agrees with a recent 40Ar/39Ar age, , based on several determinations on Moldavites from different sediments, including the Jankov deposit. This result indicates that the U and Th thin film neutron dosimetry represents a reliable alternative for an absolute approach in fission-track dating. |
| Keywords: | Fission-track dating Neutron dosimetry U thin film Th thin film Moldavite |
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