Articles | Volume 2, issue 1
https://doi.org/10.5194/gchron-2-33-2020
https://doi.org/10.5194/gchron-2-33-2020
Research article
 | 
09 Apr 2020
Research article |  | 09 Apr 2020

Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U–Pb carbonate geochronology: strategies, progress, and limitations

Nick M. W. Roberts, Kerstin Drost, Matthew S. A. Horstwood, Daniel J. Condon, David Chew, Henrik Drake, Antoni E. Milodowski, Noah M. McLean, Andrew J. Smye, Richard J. Walker, Richard Haslam, Keith Hodson, Jonathan Imber, Nicolas Beaudoin, and Jack K. Lee

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Cited articles

Albut, G., Kamber, B. S., Brüske, A., Beukes, N. J., Smith, A. J., and Schoenberg, R.: Modern weathering in outcrop samples versus ancient paleoredox information in drill core samples from a Mesoarchaean marine oxygen oasis in Pongola Supergroup, South Africa, Geochim. Cosmochim. Ac., 265, 330-353, 2019. 
Babinski, M., Van Schmus, W. R., and Chemale Jr., F.: Pb–Pb dating and Pb isotope geochemistry of Neoproterozoic carbonate rocks from the São Francisco basin, Brazil: implications for the mobility of Pb isotopes during tectonism and metamorphism, Chem. Geol., 160, 175–199, 1999. 
Babinski, M., Vieira, L. C., and Trindade, R. I.: Direct dating of the Sete Lagoas cap carbonate (Bambuí Group, Brazil) and implications for the Neoproterozoic glacial events, Terra Nova, 19, 401–406, 2007. 
Baker, A., Smart, P. L., Barnes, W. L., Edwards, R. L., and Farrant, A.: The Hekla 3 volcanic eruption recorded in a Scottish speleothem, Holocene, 5, 336–342, 1995. 
Baker, A., Smith, C. L., Jex, C., Fairchild, I. J., Genty, D., and Fuller, L.: Annually laminated speleothems: a review, Int. J. Speleol., 37, 193–206, 2008. 
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Short summary
Here we review current progress in LA-ICP-MS U–Pb carbonate geochronology and present strategies for acquisition and interpretation of carbonate U–Pb dates. We cover topics from imaging techniques and U and Pb incorporation into calcite to potential limitations of the method – disequilibrium and isotope mobility. We demonstrate the incorporation of imaging and compositional data to help refine and interpret U–Pb dates. We expect this paper to become a go-to reference paper for years to come.