Publication:
Generation of Arc-Like and OIB-Like Magmas Triggered by Slab Detachment in the Eastern Mexican Alkaline Province: Petrological Evidence from the Cenozoic Sierra de San Carlos-Cruillas Complex, Tamaulipas

dc.contributor.authorElizondo Pacheco, Luis Alejandro
dc.contributor.authorRamírez Fernández, Juan Alonso
dc.contributor.authorIgnacio San José, Cristina de
dc.contributor.authorGonzález Guzmán, Reneé
dc.contributor.authorRodríguez Saavedra, Pedro
dc.contributor.authorLeal Cuellar, Víctor Alejandro
dc.contributor.authorVelasco Tapia, Fernando
dc.contributor.authorMontalvo Arrieta, Juan Carlos
dc.date.accessioned2023-06-22T11:01:16Z
dc.date.available2023-06-22T11:01:16Z
dc.date.issued2022
dc.description.abstractThe origin of the Eastern Mexican Alkaline Province has been explained by landward arc migration and subsequent asthenospheric upwelling after slab roll-back of the Farallon Plate. In this work, we present new petrographic, mineral chemical, geochemical, and geochronological data of the Sierra de San Carlos-Cruillas (SSCC), one of the most important complexes in the province. This information, together with published data, helped us to reinterpret the tectonic processes operating during the generation of this province, as well as the mantle sources involved in the partial melting process. Detailed geochemical analysis suggests the participation of two types of metasomatized mantle regions: a lithospheric source modified by past subduction processes and an asthenospheric source slightly affected by carbonatite-related metasomatism. Variations in the partial melting degrees controlled the extent of magma enrichment in the latter. Major and trace element geochemistry, together with geochronological data and field relations, evinced an older post-orogenic setting related to the arc-like rocks (Eocene) and a younger intraplate extensional environment associated with all enriched igneous rocks (Oligocene-Miocene). Bivariate diagrams of SiO2-trace element ratios and multi-element patterns indicate that magmas from the SSCC complex dominantly evolved through fractional crystallization with a limited crustal contribution. Petrographic and mineral chemistry features suggest that some of these magmas experienced open-system processes (e.g. recharge events) in a complex and dynamic magmatic feeding system. In contrast to the traditional petrotectonic model, we propound that the passage and subsequent foundering of the Hess conjugate under northeastern Mexico resulted in its eclogitization and triggered slab tearing and succeeding detachment. This latter process occasioned mantle upwelling and the partial melting of the two recognized metasomatized mantle sources, thus generating the San Carlos-Cruillas magmatism.
dc.description.departmentDepto. de Mineralogía y Petrología
dc.description.facultyFac. de Ciencias Geológicas
dc.description.refereedTRUE
dc.description.sponsorshipConsejo Nacional de Ciencia y Tecnología
dc.description.sponsorshipFacultad de Ciencias de la Tierra (UANL)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/74653
dc.identifier.doi10.1093/petrology/egac027
dc.identifier.issn0022-3530
dc.identifier.officialurlhttps://doi.org/10.1093/petrology/egac027
dc.identifier.urihttps://hdl.handle.net/20.500.14352/72013
dc.issue.number5
dc.journal.titleJournal of petrology
dc.language.isoeng
dc.publisherOxford University Press
dc.relation.projectID#476434
dc.rights.accessRightsopen access
dc.subject.cdu552.5(721.1)
dc.subject.keywordslab detachment
dc.subject.keywordintraplate magmatism
dc.subject.keywordenriched mantle
dc.subject.keywordEastern Mexican Alkaline Province
dc.subject.keywordalkaline lamprophyres
dc.subject.ucmPetrología
dc.titleGeneration of Arc-Like and OIB-Like Magmas Triggered by Slab Detachment in the Eastern Mexican Alkaline Province: Petrological Evidence from the Cenozoic Sierra de San Carlos-Cruillas Complex, Tamaulipas
dc.typejournal article
dc.volume.number63
dspace.entity.typePublication
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Generation of Arc-Like and OIB-Like Magmas Triggered by Slab Detachment in the Eastern Mexican Alkaline Province Petrological Evidence from the Cenozoic Sierra de San Carlos-Cruillas Complex, Tamaulipas.pdf
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