Articles | Volume 3, issue 1
https://doi.org/10.5194/gchron-3-67-2021
https://doi.org/10.5194/gchron-3-67-2021
Research article
 | 
03 Feb 2021
Research article |  | 03 Feb 2021

Direct U–Pb dating of carbonates from micron-scale femtosecond laser ablation inductively coupled plasma mass spectrometry images using robust regression

Guilhem Hoareau, Fanny Claverie, Christophe Pecheyran, Christian Paroissin, Pierre-Alexandre Grignard, Geoffrey Motte, Olivier Chailan, and Jean-Pierre Girard

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Latest update: 15 Oct 2025
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Short summary
A new methodology for the micron-scale uranium–lead dating of carbonate minerals is proposed. It is based on the extraction of ages directly from pixel images (< 1 mm2) obtained by laser ablation coupled to a mass spectrometer. The ages are calculated with a robust linear regression through the pixel values. This methodology is compared to existing approaches.
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