Push-pull driving of the Central America Forearc in the context of the Cocos-Caribbean-North America triple junction

Different kinematic models have been proposed for the triple junction between the North American, Cocos and Caribbean plates. The two most commonly accepted hypotheses on its driving mechanism are (a) the North American drag of the forearc and (b) the Cocos Ridge subduction push. We present an updat...

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Detalles Bibliográficos
Autores: Álvarez-Gómez, José Antonio, Staller Vázquez, Alejandra, Martínez-Díaz, José J., Canora Catalán, Carolina, Alonso-Henar, Jorge, Insua-Arévalo, Juan M., Béjar-Pizarro, Marta
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/693060
Acceso en línea:http://hdl.handle.net/10486/693060
https://dx.doi.org/10.1038/s41598-019-47617-3
Access Level:acceso abierto
Palabra clave:OBLIQUE PLATE CONVERGENCE
SUBDUCTION ZONE
CRUSTAL DEFORMATION
EARTHQUAKE
EL SALVADOR
COSTA-RICA
Geología
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spelling Push-pull driving of the Central America Forearc in the context of the Cocos-Caribbean-North America triple junctionÁlvarez-Gómez, José AntonioStaller Vázquez, AlejandraMartínez-Díaz, José J.Canora Catalán, CarolinaAlonso-Henar, JorgeInsua-Arévalo, Juan M.Béjar-Pizarro, MartaOBLIQUE PLATE CONVERGENCESUBDUCTION ZONECRUSTAL DEFORMATIONEARTHQUAKEEL SALVADORCOSTA-RICAGeologíaDifferent kinematic models have been proposed for the triple junction between the North American, Cocos and Caribbean plates. The two most commonly accepted hypotheses on its driving mechanism are (a) the North American drag of the forearc and (b) the Cocos Ridge subduction push. We present an updated GPS velocity field which is analyzed together with earthquake focal mechanisms and regional relief. The two hypotheses have been used to make kinematic predictions that are tested against the available data. An obliquity analysis is also presented to discuss the potential role of slip partitioning as driving mechanism. The North American drag model presents a better fit to the observations, although the Cocos Ridge push model explains the data in Costa Rica and Southern Nicaragua. Both mechanisms must be active, being the driving of the Central American forearc towards the NW analogous to a push-pull train. The forearc sliver moves towards the west-northwest at a rate of 12-14 mm/yr, being pinned to the North American plate in Chiapas and western Guatemala, where the strike-slip motion on the volcanic arc must be very small.This work has been developed on the framework of the projects INTERGEOSIMA (CGL2013-47412-C2-1-P) and QUAKE-STEP (CGL2017-83931-C3-1-P)NatureDepartamento de Geología y GeoquímicaFacultad de Ciencias20192019-08-01research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/693060https://dx.doi.org/10.1038/s41598-019-47617-3reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/6930602026-06-23T12:46:27Z
dc.title.none.fl_str_mv Push-pull driving of the Central America Forearc in the context of the Cocos-Caribbean-North America triple junction
title Push-pull driving of the Central America Forearc in the context of the Cocos-Caribbean-North America triple junction
spellingShingle Push-pull driving of the Central America Forearc in the context of the Cocos-Caribbean-North America triple junction
Álvarez-Gómez, José Antonio
OBLIQUE PLATE CONVERGENCE
SUBDUCTION ZONE
CRUSTAL DEFORMATION
EARTHQUAKE
EL SALVADOR
COSTA-RICA
Geología
title_short Push-pull driving of the Central America Forearc in the context of the Cocos-Caribbean-North America triple junction
title_full Push-pull driving of the Central America Forearc in the context of the Cocos-Caribbean-North America triple junction
title_fullStr Push-pull driving of the Central America Forearc in the context of the Cocos-Caribbean-North America triple junction
title_full_unstemmed Push-pull driving of the Central America Forearc in the context of the Cocos-Caribbean-North America triple junction
title_sort Push-pull driving of the Central America Forearc in the context of the Cocos-Caribbean-North America triple junction
dc.creator.none.fl_str_mv Álvarez-Gómez, José Antonio
Staller Vázquez, Alejandra
Martínez-Díaz, José J.
Canora Catalán, Carolina
Alonso-Henar, Jorge
Insua-Arévalo, Juan M.
Béjar-Pizarro, Marta
author Álvarez-Gómez, José Antonio
author_facet Álvarez-Gómez, José Antonio
Staller Vázquez, Alejandra
Martínez-Díaz, José J.
Canora Catalán, Carolina
Alonso-Henar, Jorge
Insua-Arévalo, Juan M.
Béjar-Pizarro, Marta
author_role author
author2 Staller Vázquez, Alejandra
Martínez-Díaz, José J.
Canora Catalán, Carolina
Alonso-Henar, Jorge
Insua-Arévalo, Juan M.
Béjar-Pizarro, Marta
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Geología y Geoquímica
Facultad de Ciencias
dc.subject.none.fl_str_mv OBLIQUE PLATE CONVERGENCE
SUBDUCTION ZONE
CRUSTAL DEFORMATION
EARTHQUAKE
EL SALVADOR
COSTA-RICA
Geología
topic OBLIQUE PLATE CONVERGENCE
SUBDUCTION ZONE
CRUSTAL DEFORMATION
EARTHQUAKE
EL SALVADOR
COSTA-RICA
Geología
description Different kinematic models have been proposed for the triple junction between the North American, Cocos and Caribbean plates. The two most commonly accepted hypotheses on its driving mechanism are (a) the North American drag of the forearc and (b) the Cocos Ridge subduction push. We present an updated GPS velocity field which is analyzed together with earthquake focal mechanisms and regional relief. The two hypotheses have been used to make kinematic predictions that are tested against the available data. An obliquity analysis is also presented to discuss the potential role of slip partitioning as driving mechanism. The North American drag model presents a better fit to the observations, although the Cocos Ridge push model explains the data in Costa Rica and Southern Nicaragua. Both mechanisms must be active, being the driving of the Central American forearc towards the NW analogous to a push-pull train. The forearc sliver moves towards the west-northwest at a rate of 12-14 mm/yr, being pinned to the North American plate in Chiapas and western Guatemala, where the strike-slip motion on the volcanic arc must be very small.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-08-01
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/693060
https://dx.doi.org/10.1038/s41598-019-47617-3
url http://hdl.handle.net/10486/693060
https://dx.doi.org/10.1038/s41598-019-47617-3
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Nature
publisher.none.fl_str_mv Nature
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301629

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