Geochronology
Geochronology
GChron
Articles | Volume 4, issue 2
Articles | Volume 4, issue 2
https://doi.org/10.5194/gchron-4-629-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-4-629-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 4, issue 2
Research article
 | 
27 Oct 2022
Research article |  | 27 Oct 2022

A revised alpha-ejection correction calculation for (U–Th) ∕ He thermochronology dates of broken apatite crystals

John J. Y. He and Peter W. Reiners

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Latest update: 06 Nov 2025
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Short summary
Apatite helium thermochronology is a method that dates the time at which a rock (and the apatite crystals contained within) cooled below a certain temperature by measuring radioactive parent isotopes (uranium and thorium) and daughter isotopes (helium). This paper proposes a revision to a commonly used calculation that corrects raw data to account for instances when the analyzed apatite crystals are fragmented. It demonstrates the improved accuracy and precision of the proposed revision.
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