Articles | Volume 4, issue 2
Geochronology, 4, 665–681, 2022
https://doi.org/10.5194/gchron-4-665-2022
Geochronology, 4, 665–681, 2022
https://doi.org/10.5194/gchron-4-665-2022
Research article
22 Nov 2022
Research article | 22 Nov 2022

U and Th content in magnetite and Al spinel obtained by wet chemistry and laser ablation methods: implication for (U–Th) ∕ He thermochronometer

Marianna Corre et al.

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Short summary
This study is focused on the accurate measurement of U and Th by wet chemistry and laser ablation methods to improve (U–Th)/He dating of magnetite and spinel. The low U–Th content and the lack of specific U–Th standards significantly limit the accuracy of (U–Th)/He dating. Obtained U–Th results on natural and synthetic magnetite and aluminous spinel samples analyzed by wet chemistry methods and LA-ICP-MS sampling have important implications for the (U–Th)/He method and dates interpretation.