Geochronology
Geochronology
GChron
Articles | Volume 8, issue 3
Articles | Volume 8, issue 3
https://doi.org/10.5194/gchron-8-463-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-8-463-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 8, issue 3
Research article
 | 
27 Aug 2026
Research article |  | 27 Aug 2026

Uncertainty in helium diffusion in zircon limits thermochronologic resolution: application to the Great Unconformity

Matthew Fox, Adam G. G. Smith, Pieter Vermeesch, Kerry Gallagher, and Andrew Carter

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Short summary
The ability to reconstruct thermal histories from thermochronometric data is determined by kinetic parameters. The Great Unconformity represents an enormous amount of time lost from the sedimentary record and has been explored with zircon (U–Th)/He ages. Here we explore the uncertainty associated with the radiation damage model and show how this limits our ability to resolve the origin of the Great Unconformity.
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