Articles | Volume 3, issue 1
https://doi.org/10.5194/gchron-3-247-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-3-247-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
29 Apr 2021
Research article |
| 29 Apr 2021
| 29 Apr 2021
On the treatment of discordant detrital zircon U–Pb data
Department of Earth Sciences, University College London, Gower Street, London WC1E 6BT, UK
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Cited
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- Pyroxene-rich Orange sand highway from basaltic highlands to the ocean: Modern sediment-routing system of an Early Jurassic river E. Garzanti et al. 10.1016/j.geogeo.2024.100311
- Cryptic geological histories accessed through entombed and matrix geochronometers in dykes C. Kirkland et al. 10.1038/s43247-024-01469-6
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This paper shows that the current practice of filtering discordant U–Pb data based on the relative difference between the 206Pb/238U and 207Pb/206Pb ages is just one of several possible approaches to the problem and demonstrably not the best one. An alternative approach is to define discordance in terms of isotopic composition, as a log ratio distance between the measurement and the concordia line. Application to real data indicates that this reduces the positive bias of filtered age spectra.
This paper shows that the current practice of filtering discordant U–Pb data based on the...
