Articles | Volume 2, issue 2
https://doi.org/10.5194/gchron-2-343-2020
https://doi.org/10.5194/gchron-2-343-2020
Research article
 | 
23 Nov 2020
Research article |  | 23 Nov 2020

Expanding the limits of laser-ablation U–Pb calcite geochronology

Andrew R. C. Kylander-Clark

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Cited articles

Burisch, M., Gerdes, A., Walter, B. F., Neumann, U., Fettel, M., and Markl, G.: Methane and the origin of five-element veins: Mineralogy, age, fluid inclusion chemistry and ore forming processes in the Odenwald, SW Germany, Ore Geol. Rev., 81, 42–61, https://doi.org/10.1016/j.oregeorev.2016.10.033, 2017. 
Chew, D. M., Petrus, J. A., and Kamber, B. S.: U-Pb LA-ICPMS dating using accessory mineral standards with variable common Pb, Chem. Geol., 363, 185–199, https://doi.org/10.1016/j.chemgeo.2013.11.006, 2014. 
Goodfellow, B. W., Viola, G., Bingen, B., Nuriel, P., and Kylander-Clark, A. R.: Palaeocene faulting in SE Sweden from U-Pb dating of slickenfibre calcite, Terra Nova, 29, 321–328, 2017. 
Hansman, R. J., Albert, R., Gerdes, A., and Ring, U.: Absolute ages of multiple generations of brittle structures by U-Pb dating of calcite, Geology, 46, 207–210, https://doi.org/10.1130/G39822.1, 2018. 
Hill, C. A., Polyak, V. J., Asmerom, Y., and Provencio, P. C. T. C.: Constraints on a Late Cretaceous uplift, denudation, and incision of the Grand Canyon region, southwestern Colorado Plateau, USA, from U-Pb dating of lacustrine limestone, Tectonics, 35, 896–906, https://doi.org/10.1002/2016tc004166, 2016. 
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Short summary
This paper serves as a guide to those interested in dating calcite by laser ablation. Within it are theoretical and practical limits of U and Pb concentrations (and U / Pb ratios), which would allow viable extraction of ages from calcite (and other minerals with moderate U / Pb ratios), and which type of instrumentation would be appropriate for any given sample. The method described uses a new detector array, allowing for lower detection limits and thereby expanding the range of viable samples.