Articles | Volume 7, issue 3
https://doi.org/10.5194/gchron-7-369-2025
https://doi.org/10.5194/gchron-7-369-2025
Research article
 | 
19 Aug 2025
Research article |  | 19 Aug 2025

Discordance dating: A new approach for dating alteration events

Jesse R. Reimink, Renan Beckman, Erik Schoonover, Max Lloyd, Joshua Garber, Joshua H. F. L. Davies, Alexander Cerminaro, Morgann G. Perrot, and Andrew Smye

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Cited articles

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Andersen, T. and Elburg, M. A.: Open-system behaviour of detrital zircon during weathering: an example from the Palaeoproterozoic Pretoria Group, South Africa, Geol. Mag., 159, 561–576, https://doi.org/10.1017/S001675682100114X, 2022. 
Anderson, A. J., Hanchar, J. M., Hodges, K. V., and van Soest, M. C.: Mapping radiation damage zoning in zircon using Raman spectroscopy: Implications for zircon chronology, Chem. Geol., 538, 119494, https://doi.org/10.1016/j.chemgeo.2020.119494, 2020. 
Brenner, D. C., Passey, B. H., Holder, R. M., and Viete, D. R.: Clumped-Isotope Geothermometry and Carbonate U–Pb Geochronology of the Alta Stock Metamorphic Aureole, Utah, USA: Insights on the Kinetics of Metamorphism in Carbonates, Geochem. Geophy. Geosy., 22, e2020GC009238, https://doi.org/10.1029/2020GC009238, 2021. 
Bromfield, C. S., Erickson, A. J., Haddadin, M. A., and Mehnert, H. H.: Potassium-argon ages of intrusion, extrusion, and associated ore deposits, Park City mining district, Utah, Econom. Geol., 72, 837–848, https://doi.org/10.2113/gsecongeo.72.5.837, 1977. 
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Short summary
This article presents a new method to date geological events affecting sedimentary rocks. This method relies on the potential for the zircon U-Pb system to be disturbed during fluid-flow, alteration, and metamorphic events in sedimentary rocks. This article presents synthetic datasets for benchmarking the accuracy and precision of the discordance dating method, as well as data from detrital zircons found in the contact metamorphic aureole surround the Alta stock.
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