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dc.contributor.authorRodriguez Almodóvar, Carmen
dc.contributor.authorCastro, Antonio
dc.contributor.authorGómez Frutos, Daniel
dc.contributor.authorGutiérrez Alonso, Gabriel
dc.contributor.authorPereira, M. Francisco
dc.contributor.authorFernández, Carlos
dc.date.accessioned2022-02-15T11:40:47Z
dc.date.available2022-02-15T11:40:47Z
dc.date.issued2022-06
dc.identifier.citationC. Rodríguez, A. Castro, D. Gómez-Frutos et al. The unique Cambro-Ordovician silicic large igneous province of NW Gondwana: Catastrophic melting of a thinned crust. Gondwana Research 106 (2022) 164–173. [https://doi.org/10.1016/j.gr.2022.01.011]es_ES
dc.identifier.urihttp://hdl.handle.net/10481/72840
dc.descriptionThis work was supported through the Spanish Research Agency (AEI) Grant Nº PGC2018-096534-B-I00 (Proyecto IBERCRUST). M.F. P. acknowledges the Portuguese Foundation for Science and Technology (FCT) project UIDB/04683/2020, Instituto de Ciências da Terra. This manuscript was benefit from valuable suggestions from Marcos García-Arias and two anonymous reviewers.es_ES
dc.description.abstractCambro–Ordovician silicic magmatism in the Central Iberian Zone of the Iberian Massif (Ollo de Sapo Formation, OSF) constitutes a voluminous and geochemically atypical magmatic event that formed preceding the breakup of the northern margin of Gondwana. To date, and due to uncommon geochemical signatures, such as a high Fe, Mg content compared to anatectic melts and the departing from the calc-alkaline trends, the origin of such magmatic event is not fully understood. Herein, we report a data-analysis of geochemistry linking magmas and source compositions. The analysis of the combined data from multiple studies ascribes the geochemistry of the OSF rocks to a combination of extensive melting of Ediacaran metasiliciclastic rocks and a Ca-rich component. It is hypothesized that fluids released by crystallization of mafic magmas contributed to partial melting of a thick metasedimentary pile represented by Ediacaran siliciclastic rocks. Such melting event gave rise to a mobile nebulite or migma, which was able to extrude and form the super-eruption or “flare-up” that characterizes Cambro-Ordovician silicic magmatism at the Gondwana margin. Fast, catastrophic crustal melting with large-scale restite entrainment, triggered by the influx of mafic magma-derived fluids, are considered the main cause of the unique features of this Cambro-Ordovician atypical silicic large igneous province of Gondwana.es_ES
dc.description.sponsorshipInstituto de Ciências da Terraes_ES
dc.description.sponsorshipSpanish Research Agencyes_ES
dc.description.sponsorshipFundação para a Ciência e a Tecnologiaes_ES
dc.description.sponsorshipFundació Catalana de Trasplantament UIDB/04683/2020es_ES
dc.description.sponsorshipAgencia Estatal de Investigación PGC2018-096534-B-I00es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subjectCambro-Ordovician magmatismes_ES
dc.subjectOllo de Sapo Formationes_ES
dc.subjectData-analysises_ES
dc.subjectGeochemical modellinges_ES
dc.subjectExtensive crustal meltinges_ES
dc.titleThe unique Cambro-Ordovician silicic large igneous province of NW Gondwana: Catastrophic melting of a thinned crustes_ES
dc.typejournal articlees_ES
dc.rights.accessRightsopen accesses_ES
dc.identifier.doi10.1016/j.gr.2022.01.011
dc.type.hasVersionVoRes_ES


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