Articles | Volume 4, issue 2
Geochronology, 4, 629–640, 2022
https://doi.org/10.5194/gchron-4-629-2022
Geochronology, 4, 629–640, 2022
https://doi.org/10.5194/gchron-4-629-2022
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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Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on gchron-2022-11', Richard A. Ketcham, 26 May 2022
    • AC2: 'Reply on RC1', John He, 05 Jul 2022
  • RC2: 'Comment on gchron-2022-11', Anonymous Referee #2, 04 Jun 2022
    • AC1: 'Reply on RC2', John He, 05 Jul 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (further review by editor) (12 Jul 2022) by Cecile Gautheron
AR by John He on behalf of the Authors (01 Aug 2022)  Author's response    Author's tracked changes    Manuscript
ED: Publish subject to revisions (further review by editor and referees) (08 Aug 2022) by Cecile Gautheron
AR by John He on behalf of the Authors (08 Aug 2022)  Author's response    Author's tracked changes    Manuscript
ED: Referee Nomination & Report Request started (26 Aug 2022) by Cecile Gautheron
RR by Richard A. Ketcham (05 Sep 2022)
ED: Publish subject to minor revisions (further review by editor) (06 Sep 2022) by Cecile Gautheron
AR by John He on behalf of the Authors (13 Sep 2022)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (25 Sep 2022) by Cecile Gautheron
ED: Publish as is (29 Sep 2022) by Greg Balco(Editor)
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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.