The role of subducted sediments in the formation of intermediate mantle-derived magmas from the Northern Colombian Andes

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dc.citation.journalTitleLithos
dc.contributor.authorErrázuriz-Henao C.
dc.contributor.authorGómez-Tuena A.
dc.contributor.authorDuque-Trujillo J.
dc.contributor.authorWeber M.
dc.contributor.departmentUniversidad EAFIT. Departamento de Cienciasspa
dc.contributor.researchgroupGeología Ambiental y Tectónicaspa
dc.creatorErrázuriz-Henao C.
dc.creatorGómez-Tuena A.
dc.creatorDuque-Trujillo J.
dc.creatorWeber M.
dc.date.accessioned2021-03-26T21:25:57Z
dc.date.available2021-03-26T21:25:57Z
dc.date.issued2019-01-01
dc.description.abstractUnraveling the sources and processes that produce intermediate continental arc volcanoes is still a challenge for geoscientists. To address this problem, here we use comprehensive geochemical and isotopic data from Nevado del Santa Isabel and Cerro Machín volcanoes in the North Volcanic Province of Colombia, and from oceanic sediments sampled outboard the Colombian continental margin. Volcanoes along this province have been influenced by the subduction of a compositionally contrasting sedimentary column constituted by a carbonate-rich pelagic layer overlain by a clay-and-apatite-rich hemipelagic unit. The studied volcanoes exhibit the high Mg# (~60) and calc-alkaline affinities that are typical of continental arcs but display unusually high and contrasting Th(U)/La, Nb/Ta and Dy/Yb ratios and isotopic compositions. We argue that the geochemical variations within and among these volcanoes are not controlled by differentiation or crustal contamination of a parental basaltic magma but formed by melting of different kinds of subducted sedimentary materials detached from the slab as buoyantly rising diapirs at various depths. This model accounts for the reworking of refractory carbonates into arc magmatism and suggests that the geochemical diversity of the North Volcanic Province is mainly controlled by the nature of the subduction inputs and their exhumation pathways within the mantle wedge. © 2019eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=8760
dc.identifier.doi10.1016/j.lithos.2019.04.007
dc.identifier.issn00244937
dc.identifier.issn18726143
dc.identifier.otherWOS;000470043100011
dc.identifier.otherSCOPUS;2-s2.0-85064161175
dc.identifier.urihttp://hdl.handle.net/10784/27245
dc.languageeng
dc.language.isoengeng
dc.publisherElsevier B.V.
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85064161175&doi=10.1016%2fj.lithos.2019.04.007&partnerID=40&md5=200a4473d76c142023e3b4728a489673
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/0024-4937
dc.sourceLithos
dc.subjectcore (planetary)eng
dc.subjectironeng
dc.subjectisotopic fractionationeng
dc.subjectisotopic ratioeng
dc.subjectMartian meteoriteeng
dc.subjectplanetesimaleng
dc.subjectsulfureng
dc.titleThe role of subducted sediments in the formation of intermediate mantle-derived magmas from the Northern Colombian Andeseng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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