Articles | Volume 3, issue 1
Geochronology, 3, 103–122, 2021
https://doi.org/10.5194/gchron-3-103-2021

Special issue: In situ carbonate U–Pb geochronology

Geochronology, 3, 103–122, 2021
https://doi.org/10.5194/gchron-3-103-2021

Research article 16 Feb 2021

Research article | 16 Feb 2021

Tools for uranium characterization in carbonate samples: case studies of natural U–Pb geochronology reference materials

E. Troy Rasbury et al.

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Cited articles

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Barnaby, R. and Rimstidt, J.: Redox conditions of calcite cementation interpreted from Mn-contents and Fe-contents of authigenic calcites, Geol. Soc. Am. Bull., 101, 795–804, https://doi.org/10.1130/0016-7606(1989)101<0795:RCOCCI>2.3.CO;2, 1989. 
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Short summary
We characterize three natural carbonate samples with elevated uranium/lead (U/Pb) ratios to demonstrate techniques improving the understanding of U incorporation in carbonates for U/Pb dating. With the rapidly accelerating application of laser ablation analyses, there is a great need for well-characterized reference materials that can serve multiple functions. Strontium (Sr) isotope analyses and U XANES demonstrate that these samples could be used as reference materials.