Articles | Volume 7, issue 3
https://doi.org/10.5194/gchron-7-387-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-7-387-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
27 Aug 2025
Research article |
| 27 Aug 2025
| 27 Aug 2025
The virtual-spot approach: a simple method for image U–Pb carbonate geochronology by high-repetition-rate LA-ICP-MS
Guilhem Hoareau
CORRESPONDING AUTHOR
Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, LFCR, UMR5150, Pau, France
Fanny Claverie
Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, UMR5254, Pau, France
Christophe Pecheyran
Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, UMR5254, Pau, France
Gaëlle Barbotin
Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, UMR5254, Pau, France
Michael Perk
Institute of Operating Systems and Computer Networks Algorithms, TU Braunschweig, 38106 Braunschweig, Germany
Nicolas E. Beaudoin
Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, LFCR, UMR5150, Pau, France
Brice Lacroix
Department of Geology, Kansas State University, 108 Thompson Hall, Manhattan, KS, 66506, USA
E. Troy Rasbury
Department of Geosciences, FIRST, Stony Brook University, 100 Nichols Rd, Stony Brook, NY 11794-2100, USA
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Short summary
We present an approach to dating of carbonates using isotopic maps. The maps are divided into squares called virtual spots. For each virtual spot, statistical values (mean, uncertainty) are used to determine the age. The user can modify the size and location of the virtual spots and select those that give the most robust age. This approach, applied to high-spatial-resolution images, makes it possible for the first time to obtain satisfactory ages on maps as small as 100 µm x 100 µm.
We present an approach to dating of carbonates using isotopic maps. The maps are divided into...
