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A revised Ordovician age for the Sisargas orthogneiss, Galicia (Spain). Zircon U-Pb ion-microprobe and LA-ICPMS dating

dc.contributor.authorTalavera Rodríguez, Cristina
dc.contributor.authorBea Barredo, Fernando 
dc.contributor.authorGonzález Montero, Pilar
dc.contributor.authorWhitehouse, Martin
dc.date.accessioned2014-06-02T08:35:40Z
dc.date.available2014-06-02T08:35:40Z
dc.date.issued2008
dc.identifier.citationTalavera, C.; et al. A revised Ordovician age for the Sisargas orthogneiss, Galicia (Spain). Zircon U-Pb ion-microprobe and LA-ICPMS dating. Geologica Acta, 6(4): 313-317 (2008). [http://hdl.handle.net/10481/32076]es_ES
dc.identifier.issn1695-6133
dc.identifier.issn1696-5728
dc.identifier.urihttp://hdl.handle.net/10481/32076
dc.description.abstractThe Sisargas orthogneiss is located in the Schistose Domain of the Galicia Trás-Os-Montes Zone. It has previously been dated by Allegret and Iglesias (1987) who reported an U-Pb upper intercept at 570 ± 14 Ma, considered to be the crystallization age. For this reason, the Sisargas orthogneiss has traditionally been considered one of the oldest magmatic rocks of the Central Iberian Zone. However, new SIMS and LA-ICPMS data reveal that it crystallized at 479 ± 7 Ma and contains zircons with abundant pre-magmatic cores with ages clustering at 585 ± 15 Ma. This suggests that the Sisargas orthogneiss derives from the melting of a Pan-African protolith.es_ES
dc.description.sponsorshipThis work was financially supported by the Spanish grant CLG2005-05863/BTE and the Andalucian grant RNM1595. This is the Nordsim publication nº 209. The Nordsim facility is operated and financed under a contract between the research funding agencies of Denmark, Norway and Sweden, the Swedish Museum of Natural History and the Geological Survey of Finland.es_ES
dc.language.isoenges_ES
dc.publisherUniversidad de Barcelona; Instituto de Ciencias de la Tierra Jaume Almeraes_ES
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs 3.0 License
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/
dc.subjectU-Pb datinges_ES
dc.subjectZircones_ES
dc.subjectSisargas orthogneisses_ES
dc.subjectIberian Massifes_ES
dc.titleA revised Ordovician age for the Sisargas orthogneiss, Galicia (Spain). Zircon U-Pb ion-microprobe and LA-ICPMS datinges_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
dc.identifier.doi10.1344/105.000000259


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