Tartèse, Romain; Ruffet, Gilles; Poujol, Marc; Boulvais, Philippe and Ireland, Trevor R.
(2011).
| URL: | http://dx.doi.org/10.1111/j.1365-3121.2011.01024.x |
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| Google Scholar: | Look up in Google Scholar |
Abstract
Although water is ubiquitous in the continental crust, its effect on geochronometers through mineral reequilibration is rarely taken into account. Herein, we present 40Ar/39Ar analyses on muscovite and U-Pb isotopic data on zircon and monazite from a Variscan syn-tectonic granite from western France. Both the K-Ar in the muscovite and U-Pb in the monazite isotopic systems were hydrothermally reset, whereas the U-Pb radiogenic system in most of the zircons was unaffected and dates the granite emplacement age. Titanium chemical maps obtained on muscovites from various dated samples display a spectacular overprinting of their magmatic zoning resulting from increasing fluid-rock interaction. These results reiterate the need to combine geochronological data with petrological, mineralogical and geochemical studies to accurately interpret ages obtained in this type of geodynamical settings.
| Item Type: | Journal Article | |||||||||
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| Copyright Holders: | 2011 Blackwell Publishing Ltd | |||||||||
| ISSN: | 0954-4879 | |||||||||
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| Academic Unit/Department: | Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences Faculty of Science, Technology, Engineering and Mathematics (STEM) |
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| Item ID: | 31686 | |||||||||
| Depositing User: | Romain Tartèse | |||||||||
| Date Deposited: | 30 Jan 2012 14:23 | |||||||||
| Last Modified: | 02 Aug 2016 14:11 | |||||||||
| URI: | http://oro.open.ac.uk/id/eprint/31686 | |||||||||
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