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http://hdl.handle.net/2445/127772
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DC Field | Value | Language |
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dc.contributor.author | Van Lichtervelde, M. | - |
dc.contributor.author | Grand'Homme, A. | - |
dc.contributor.author | de Saint-Blanquat, M. | - |
dc.contributor.author | Olivier, Ph. | - |
dc.contributor.author | Gerdes, Axel | - |
dc.contributor.author | Paquette, J.-L. | - |
dc.contributor.author | Melgarejo i Draper, Joan-Carles | - |
dc.contributor.author | Druguet, Elena | - |
dc.contributor.author | Alfonso Abella, María Pura | - |
dc.date.accessioned | 2019-01-31T12:44:49Z | - |
dc.date.available | 2019-01-31T12:44:49Z | - |
dc.date.issued | 2017-02 | - |
dc.identifier.issn | 0930-0708 | - |
dc.identifier.uri | http://hdl.handle.net/2445/127772 | - |
dc.description.abstract | The Cap de Creus granitic pegmatites in the eastern Catalan Pyrenees were dated using in situ U-Pb geochronology by laser ablation ICP-MS on zircon and columbite-group minerals (CGM), which are present in the different types of pegmatites from type I (K-feldspar pegmatites, least evolved) to type IV (albite pegmatites, most evolved) and therefore allow dating the different pegmatitic pulses. In a type III pegmatite where zircon and CGM are co-genetically associated in the same sample, both minerals were dated using zircon and tantalite reference materials, respectively, to avoid laser-induced matrix-dependent fractionation. In one sample, xenotime genetically associated with zircon was also dated. Two ages were obtained for type I and three ages for type III pegmatites. Three of these 5 ages range from 296.2 ± 2.5 to 301.9 ± 3.8 Ma and are allocated to the primary magmatic stage of crystallization and therefore to the emplacement event. Two younger ages (290.5 ± 2.5 and 292.9 ± 2.9 Ma) obtained on secondary zircon and xenotime, respectively, are interpreted as late post-solidus hydrothermal remobilization. There is no age difference between type I and type III pegmatites. The mean 299 Ma primary magmatic age allows the main late Carboniferous deformation event to be dated and is also synchronous with other peraluminous and calc-alkaline granites in the Pyrenees. However, the youngest ages around 292 Ma imply that tectonics was still active in Early Permian times in the Cap de Creus area. | - |
dc.format.extent | 49 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Springer Verlag | - |
dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1007/s00710-016-0455-1 | - |
dc.relation.ispartof | Mineralogy and Petrology, 2017, vol. 111, num. 1, p. 1-21 | - |
dc.relation.uri | https://doi.org/10.1007/s00710-016-0455-1 | - |
dc.rights | (c) Springer Verlag, 2017 | - |
dc.source | Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada) | - |
dc.subject.classification | Geocronologia | - |
dc.subject.classification | Geoquímica | - |
dc.subject.classification | Pegmatites | - |
dc.subject.other | Geochronology | - |
dc.subject.other | Geochemistry | - |
dc.subject.other | Pegmatites | - |
dc.title | U-Pb geochronology on zircon and columbite-group minerals of the Cap de Creus pegmatites, NE Spain | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 668690 | - |
dc.date.updated | 2019-01-31T12:44:49Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada) |
Files in This Item:
File | Description | Size | Format | |
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668690.pdf | 1.77 MB | Adobe PDF | View/Open |
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