Geochronology
Geochronology
GChron
Articles | Volume 6, issue 1
Articles | Volume 6, issue 1
https://doi.org/10.5194/gchron-6-89-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-6-89-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 6, issue 1
Research article
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27 Mar 2024
Research article | Highlight paper |  | 27 Mar 2024

Minimizing the effects of Pb loss in detrital and igneous U–Pb zircon geochronology by CA-LA-ICP-MS

Erin E. Donaghy, Michael P. Eddy, Federico Moreno, and Mauricio Ibañez-Mejia

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This study is an important contribution to high precision geochronology. The study highlights the criteria for selecting the most suitable zircon material and it analytical treatment to obtain precise and accurate mineral ages.
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Short summary
Chemical abrasion (CA) is a technique that reduces or eliminates the effects of Pb loss in zircon U–Pb geochronology. However, CA has yet to be applied to large-n detrital zircon (DZ) analyses. We show that CA does not negatively impact or systematically bias U–Pb dates, improves the resolution of age populations defined by 206Pb/238U dates, and increases the percentage of concordant analyses in age populations defined by 207Pb/206Pb dates.
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