Articles | Volume 8, issue 2
https://doi.org/10.5194/gchron-8-313-2026
https://doi.org/10.5194/gchron-8-313-2026
Research article
 | 
28 May 2026
Research article |  | 28 May 2026

Response of the Rb–Sr system in biotite during contact metamorphism in the aureole of the Makhavinekh Lake Pluton, Labrador

Christopher R. M. McFarlane

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Cited articles

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Bevan, D., Coath, C. D., Lewis, J., Schwieters, J., Lloyd, N., Craig, G., Wehrs, H., and Elliott, T.: In situ Rb–Sr dating by collision cell, multicollection inductively-coupled plasma mass-spectrometry with pre-cell mass-filter,(CC-MC-ICPMS/MS), J. Anal. Atom. Spectrom., 36, 917–931, 2021. 
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Bruand, E., Fowler, M., Storey, C., and Darling, J.: Apatite trace element and isotope applications to petrogenesis and provenance, Am. Mineral., 102, 75–84, 2017. 
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Short summary
The mineral biotite is a common rock-forming mineral and notable for its ability to incorporate Rb into its structure. Microanalytical tools such a laser ablation and tandem mass spectrometry, allows Rb-Sr biotite dating with context preserved. This study reveals Sr mobility that is controlled by location in a rock. Reconstructing the timing of geological events using biotite Rb-Sr geochronology is, therefore, contingent on grain-scale evaluation of biotite textures.
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