The Paleogene arcs of the northern Andes of Colombia and Panama: Insights on plate kinematic implications from new and existing geochemical, geochronological and isotopic data

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dc.citation.journalTitleTectonophysics
dc.contributor.authorCardona A.
dc.contributor.authorLeón S.
dc.contributor.authorJaramillo J.S.
dc.contributor.authorMontes C.
dc.contributor.authorValencia V.
dc.contributor.authorVanegas J.
dc.contributor.authorBustamante C.
dc.contributor.authorEcheverri S.
dc.contributor.departmentUniversidad EAFIT. Departamento de Cienciasspa
dc.contributor.researchgroupGeología Ambiental y Tectónicaspa
dc.creatorCardona A.
dc.creatorLeón S.
dc.creatorJaramillo J.S.
dc.creatorMontes C.
dc.creatorValencia V.
dc.creatorVanegas J.
dc.creatorBustamante C.
dc.creatorEcheverri S.
dc.date.accessioned2021-03-26T21:25:57Z
dc.date.available2021-03-26T21:25:57Z
dc.date.issued2018-12-06
dc.description.abstractThe northern Andes of Colombia comprise two non-cogenetic Paleogene arcs formed in contrasting geodynamic settings including continental and oceanic domains. New whole-rock geochemistry and isotopic constraints, together with a review of 332 geochemical, 76 isotopic and 204 geochronological data from Paleocene to Eocene volcanic and plutonic rocks exposed in central and western Colombia and Panama, are used to evaluate cause-effect relations between regional plate kinematics and the spatio-temporal distribution of the circum-Caribbean magmatic arcs. Short-lived, ~60–45 Ma arc-like magmatism in the Central Cordillera of Colombia was emplaced in a thickened continental crust due to the oblique subduction of the Caribbean oceanic plate underneath South America, as suggested by the high Sr/Y ratios. Conversely, the Panama Arc, and its poorly explored extension in the northwestern segment of the Western Cordillera of Colombia document a major phase of tholeiitic to calc-alkaline arc magmatism between ~71 Ma and ~34 Ma, mostly derived from a hydrated mantle wedge, and emplaced in an oceanic plateau crust. This arc record a major phase of magmatic activity between 40 Ma and 50 Ma that can be associated to changes in the convergence direction and subduction rates of the Farallon plate. Farther to the south, in the Pacific region of Colombia, Eocene arc-related rocks from the Timbiqui Complex show a geochemical signature that suggests a magmatic origin from melting of both a subduction-modified mantle and lower tectonically thickened crust. A possible interpretation for the Pacific and Western Colombia-Panama Arc systems, and its analogous in Ecuador, recall an Aleutian-type convergent margin in which the continental arc laterally switches to a purely oceanic system along the trailing edge of the Caribbean plate as consequence of eastward subduction of the Farallon plate. © 2018 Elsevier B.V.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=8472
dc.identifier.doi10.1016/j.tecto.2018.10.032
dc.identifier.issn00401951
dc.identifier.issn18793266
dc.identifier.otherWOS;000454964600008
dc.identifier.otherSCOPUS;2-s2.0-85056254373
dc.identifier.urihttp://hdl.handle.net/10784/27243
dc.languageeng
dc.language.isoengeng
dc.publisherELSEVIER SCIENCE BV
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85056254373&doi=10.1016%2fj.tecto.2018.10.032&partnerID=40&md5=e92be9ef347b2251238e00a62ff2bbaa
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/0040-1951
dc.sourceTectonophysics
dc.subjectDispersionseng
dc.subjectGroundwatereng
dc.subjectGroundwater floweng
dc.subjectGroundwater pollutioneng
dc.subjectHerbicideseng
dc.subjectImpuritieseng
dc.subjectNumerical modelseng
dc.subjectSolute transporteng
dc.subjectUreaeng
dc.subjectColumn experimentseng
dc.subjectContaminant transport modelingeng
dc.subjectDispersion coefficienteng
dc.subjectFirst order degradationeng
dc.subjectPesticide removaleng
dc.subjectRiverbank filtrationeng
dc.subjectSolute transport modeleng
dc.subjectTransverse dispersivityeng
dc.subjectInverse problemseng
dc.titleThe Paleogene arcs of the northern Andes of Colombia and Panama: Insights on plate kinematic implications from new and existing geochemical, geochronological and isotopic dataeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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