Articles | Volume 3, issue 2
https://doi.org/10.5194/gchron-3-415-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-3-415-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Short communication: Inverse isochron regression for Re–Os, K–Ca and other chronometers
Yang Li
State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
Department of Earth Sciences, University College London, Gower Street, London WC1E 6BT, UK
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17 citations as recorded by crossref.
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- Episodic alteration within a gold-bearing Archean shear zone revealed by in situ biotite Rb–Sr dating A. Zametzer et al. 10.1016/j.precamres.2022.106872
- Laser ablation (in situ) Lu-Hf dating of magmatic fluorite and hydrothermal fluorite-bearing veins S. Glorie et al. 10.1016/j.gsf.2023.101629
- Molybdenite Reference Materials for In SituLA‐ICP‐MS/MS Re‐Os Geochronology R. Tamblyn et al. 10.1111/ggr.12550
- Implications of new geochronological constraints on the Aberfeldy stratiform barite deposits, Scotland, for the depositional continuity and global correlation of the Neoproterozoic Dalradian Supergroup N. Moles & D. Selby 10.1016/j.precamres.2022.106925
- Robust laser ablation Lu–Hf dating of apatite: an empirical evaluation S. Glorie et al. 10.1144/SP537-2022-205
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Short summary
A conventional isochron is a straight-line fit to two sets of isotopic ratios, D/d and P/d, where P is the radioactive parent, D is the radiogenic daughter, and d is a second isotope of the daughter element. The slope of this line is proportional to the age of the system. An inverse isochron is a linear fit through d/D and P/D. The horizontal intercept of this line is inversely proportional to the age. The latter approach is preferred when d<D, which is the case in Re–Os and K–Ca geochronology.
A conventional isochron is a straight-line fit to two sets of isotopic ratios, D/d and P/d,...