Geochronology
Geochronology
GChron
Articles | Volume 6, issue 1
Articles | Volume 6, issue 1
https://doi.org/10.5194/gchron-6-1-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-6-1-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 6, issue 1
Research article
 | Highlight paper
 | 
09 Jan 2024
Research article | Highlight paper |  | 09 Jan 2024

Geochronological and geochemical effects of zircon chemical abrasion: insights from single-crystal stepwise dissolution experiments

Alyssa J. McKanna, Blair Schoene, and Dawid Szymanowski

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U-Pb dating of zircon is the most widely used method in geochronology. This paper provides key new insights into the causes and extents of Pb-loss in zircon and how to deal with it to derived geologically significant and meaningful ages from zircon, not just dates. The approach and quantified method presented in this paper is an important step forward towards improvement of U-Pb zircon ages.
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Acid leaching is used to remove radiation-damaged portions of zircon crystals prior to U–Pb dating to improve the accuracy of datasets. We test how the temperature and duration of acid leaching affect geochronological and geochemical outcomes. We build a framework that relates radiation damage, zircon solubility, and Pb loss.
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