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 (13.98 +/- 0.58 Ma) agrees with a recent 40Ar/39Ar age, 14.34 +/- 0.04 Ma, 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.
U and Th thin film neutron dosimetry for fission-track dating: application to the age standard Moldavite
Bigazzi G;Laurenzi MA;Balestrieri ML;Norelli P;
2005
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 (13.98 +/- 0.58 Ma) agrees with a recent 40Ar/39Ar age, 14.34 +/- 0.04 Ma, 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.File in questo prodotto:
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