%0 Journal Article
%A Casas Tuset, Josep María
%A Castiñeiras García, Pedro
%A Navidad Fernández De La Cruz, Marina
%A Liesa Torre Marín, Montserrat
%A Carreras, Jordi
%T New insights into the Late Ordovician magmatism in the Eastern Pyrenees: U–PbSHRIMP zircon data from the Canigó massif
%D 2010
%@ 1342-937X
%U https://hdl.handle.net/20.500.14352/42019
%X New geochronological data from the Canigó massif (Eastern Pyrenees) using U–Pb SIMS on zircon provideevidence of the existence of a Late Ordovician (456–446 Ma) plutonic event that emplaced granitic anddioritic bodies into a Late Neoproterozoic–Early Paleozoic metasedimentary series. These are the firstgeochronological data documenting this magmatic episode in the Pyrenees, which is coeval withsynsedimentary volcanism and normal fault development in rocks of the Upper Ordovician. This LateOrdovician magmatic event postdates a ?Middle Ordovician compressional episode recorded in the pre-Upper Ordovician sequence, and is distinct from an Early Ordovician magmatic event that gave rise to theprotoliths of large gneissic bodies cropping out in the Pyrenees. This evolution argues against a continuousextensional regime related to the opening of the Rheic or the Rheic and Paleotethys oceans in this segment ofthe Northern Gondwana margin during the Ordovician and Silurian.
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