Lateral spreading of the middle to lower crust inferred from Paleocene migmatites in the Xolapa Complex (Puerto Escondido, Mexico): Gravitational collapse of a Laramide orogen?

Simple item page
AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-09-15T00:30:58Z
Fecha de publicación2017-04-13
ResumenField and laboratory studies including textural, petrological and geochronological analysis of migmatites of the Xolapa Complex affected by the same deformational event suggests that the deformation occurred during crystallization of neosome. The deformation represents sub-horizontal spreading of middle to lower crust according to structural data, and occurred during the Paleocene as inferred from U-Pb laser ablation dating of zircon. According to a compilation of stratigraphic, magmatic and deformational data reported in southern Mexico, the sub-horizontal spreading occurred after the culmination of the Upper Cretaceous Laramide orogeny. Compiled regional data indicate (a) coast-to-coast mass transfer in the upper crust from Zihuatanejo to Veracruz from the Cretaceous-Tertiary boundary until the mid-Eocene; (b) contemporaneous adakite-like magmatism; and (c) extension in the Mixteco and Oaxaca terranes of southern Mexico coeval to compression in the surrounding crust. Because all these observations are spatially associated to areas of the Mixteco and Oaxaca terranes, we propose that these areas experienced a post-orogenic gravitational collapse since the Cretaceous-Tertiary boundary until the mid-Eocene. This proposal implies that the gravitational collapse was recorded in the Xolapa Complex by migmatite formation in response to ascent of the brittle-ductile transition, decompression of the orogenic root, and/or shear-driven asthenospheric upwelling. Gravitational collapse deformation was accommodated by the subsequent flow of the migmatites towards the foreland, preceding the eastward escape of the Chords Block. (C) 2017 Elsevier B.V. All rights reserved.es_ES
Doihttps://doi.org/10.1016/j.tecto.2017.04.010es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/2690
Idiomaenes_ES
EditorialElsevier BVes_ES
RelaciónTectonophysicses_ES
URL relacionadohttps://doi.org/10.1016/j.tecto.2017.04.010es_ES
DerechosAcceso restringido / Suscripción (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_16eces_ES
FuenteTectonophysics
Palabra claveGeologyes_ES
Palabra claveCrustes_ES
Palabra claveMigmatitees_ES
Palabra claveUpper crustes_ES
Palabra claveSeismologyes_ES
Palabra clavePaleontologyes_ES
Palabra clavePetrologyes_ES
Palabra claveGeophysicses_ES
Palabra claveGneisses_ES
Palabra claveMetamorphic rockes_ES
ClasificaciónGeological and Geochemical Analysises_ES
TítuloLateral spreading of the middle to lower crust inferred from Paleocene migmatites in the Xolapa Complex (Puerto Escondido, Mexico): Gravitational collapse of a Laramide orogen?es_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorPeña-Alonso, Tomás A.
AutorEstrada-Carmona, Juliana
AutorGarza, Roberto S. Molina
AutorPeña-Alonso, Tomás A.es_ES
AutorSolari, Luigi
AutorEstrada-Carmona, Julianaes_ES
AutorGarza, Roberto S. Molinaes_ES
AutorLévresse, Gilles
AutorSolari, Luigies_ES
AutorLévresse, Gilleses_ES
AutorLatorre, C.
AutorLatorre, C.es_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Rango de páginas143-163es_ES
URL relacionadahttps://doi.org/10.1016/j.tecto.2017.04.010
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen706-707es_ES

Files

Collections

Documentación Cientifica