Contrasting chemical and isotopic signatures from Neoproterozoicmetasedimentary rocks in the Central Iberian Zone (Spain) ofpre-Variscan Europe: Implications for terrane analysis and EarlyOrdovician magmatic belts

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dc.contributor.authorVillaseca González, Carlos
dc.contributor.authorMerino Martínez, Enrique
dc.contributor.authorOyarzun Muñoz, Roberto
dc.contributor.authorOrejana García, David
dc.contributor.authorPérez-Soba Aguilar, Cecilia María
dc.contributor.authorChicharro Álvarez, Eva
dc.date.accessioned2023-06-19T13:41:13Z
dc.date.available2023-06-19T13:41:13Z
dc.date.issued2014
dc.description.abstractNeoproterozoic metasedimentary units from central Spain and the northern Central Iberian Zone (CIZ) show distinctive geochemical signatures with respect to the Schist-Greywacke Complex, which is dominant in the southwestern part of the CIZ. Significant differences occur in major and trace element composition and initial Nd isotope ratios, which cannot be explained in terms of metamorphic grade and/or anatexis in some layers of these metasedimentary sequences. ɛNd540 values from metapelites of central Spain range from −5.6 to −10.4 whereas those from the Schist-Greywacke Complex span a narrower and higher range of −0.8 to −3.1. This difference suggests different source regions. The presence of two contrasting Early Ordovician magmatic belts in both subzones reinforces the idea of different Precambrian basement terranes in the CIZ. These data are crucial for pre-Variscan paleogeographic reconstructions of the westernmost European terranes and for checking the validity of current subdivisions of the Iberian Massif.
dc.description.departmentDepto. de Mineralogía y Petrología
dc.description.facultyFac. de Ciencias Geológicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO)
dc.description.sponsorshipUniversidad Complutense de Madrid
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/63449
dc.identifier.doi10.1016/j.precamres.2014.02.006
dc.identifier.issn0301-9268
dc.identifier.officialurlhttps://doi.org/10.1016/j.precamres.2014.02.006
dc.identifier.relatedurlhttps://www.elsevier.com/locate/precamres
dc.identifier.urihttps://hdl.handle.net/20.500.14352/34264
dc.journal.titlePrecambrian Research
dc.language.isoeng
dc.page.final145
dc.page.initial131
dc.publisherElsevier
dc.relation.projectIDCGL2012-32822
dc.relation.projectID910492
dc.rights.accessRightsrestricted access
dc.subject.cdu550.4
dc.subject.cdu552.1
dc.subject.keywordMetapelites
dc.subject.keywordNeoproterozoic
dc.subject.keywordGeochemistry
dc.subject.keywordCentral Iberian Zone
dc.subject.keywordIberian terranes
dc.subject.ucmGeoquímica
dc.subject.ucmPetrología
dc.subject.unesco2503 Geoquímica
dc.titleContrasting chemical and isotopic signatures from Neoproterozoicmetasedimentary rocks in the Central Iberian Zone (Spain) ofpre-Variscan Europe: Implications for terrane analysis and EarlyOrdovician magmatic belts
dc.typejournal article
dc.volume.number245
dspace.entity.typePublication
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relation.isAuthorOfPublication07e25399-5798-4f11-95b9-6084418bfe0b
relation.isAuthorOfPublicationddb68bd5-c483-46be-84fa-cb2d3fd4ba2b
relation.isAuthorOfPublication064006d7-ea47-428e-91e0-02ed1a12ae83
relation.isAuthorOfPublication.latestForDiscoverye645e46d-5962-4158-a2fd-b3fea7ed85bd
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