Geochronology
Geochronology
GChron
Articles | Volume 8, issue 2
Articles | Volume 8, issue 2
https://doi.org/10.5194/gchron-8-297-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-8-297-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 8, issue 2
Research article
 | 
27 May 2026
Research article |  | 27 May 2026

Novel insights into the post-IR IRSL200 signal bleachability of single-grain K-feldspars in fluvial modern analogues from the Southern Central Andes, Chile

Arindam Biswas, Svenja Riedesel, Louise Karman-Besson, Max Hellers, Anne Guyez, Stéphane Bonnet, and Tony Reimann

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Short summary
We evaluate luminescence signal resetting in single-grain K-feldspar from modern fluvial analogues in Chile. Our results show a uniform sample-average bleaching trend but strong grain-scale variability. Residual doses are independent of feldspar geochemistry and catchment lithology but scale with natural dose. Taken together, these findings refine palaeodose correction strategies and support defining sample‑specific bleaching thresholds for luminescence‑based sediment tracing.
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