Geochronology
Geochronology
GChron
Articles | Volume 8, issue 4
Articles | Volume 8, issue 4
https://doi.org/10.5194/gchron-8-661-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-8-661-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 8, issue 4
Research article
 | 
22 Oct 2026
Research article |  | 22 Oct 2026

Coupled K–Ca and Rb–Sr dating by LA-ICP-MS/MS – reaction gas optimisation and geological applications

Sarah E. Gilbert, Stijn Glorie, and Jarred C. Lloyd

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Short summary
This study presents new methodology for combined in-situ analysis of Rb-Sr and K-Ca in K-rich micas and feldspars. Simultaneous analysis is especially beneficial for small grains and/or detrital minerals where sample material is limited. This technique has the potential for identifying decoupling between the isotope systems, to further understanding of cooling and alteration processes in micas and feldspars, and increase knowledge of element diffusivity in these minerals.
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