Geochronology
Geochronology
GChron
Articles | Volume 5, issue 2
Articles | Volume 5, issue 2
https://doi.org/10.5194/gchron-5-323-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-5-323-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 5, issue 2
Short communication/technical note
 | 
19 Jul 2023
Short communication/technical note |  | 19 Jul 2023

Technical note: In situ U–Th–He dating by 4He ∕ 3He laser microprobe analysis

Pieter Vermeesch, Yuntao Tian, Jae Schwanethal, and Yannick Buret

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Latest update: 13 Dec 2024
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Short summary
The U–Th–He method is a technique to determine the cooling history of minerals. Traditional approaches to U–Th–He dating are time-consuming and require handling strong acids and radioactive solutions. This paper presents an alternative approach in which samples are irradiated with protons and subsequently analysed by laser ablation mass spectrometry. Unlike previous in situ U–Th–He dating attempts, the new method does not require any absolute concentration measurements of U, Th, or He.
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