dor_id: 42562

506.#.#.a: Público

590.#.#.d: Cada artículo es evaluado mediante una revisión ciega única. Los revisores son externos nacionales e internacionales.

510.0.#.a: Consejo Nacional de Ciencia y Tecnología (CONACyT), Sistema Regional de Información en Línea para Revistas Científicas de América Latina, el Caribe, España y Portugal (Latindex), Scientific Electronic Library Online (SciELO), SCOPUS, Web Of Science (WoS)

561.#.#.u: http://www.geofisica.unam.mx/

650.#.4.x: Físico Matemáticas y Ciencias de la Tierra

336.#.#.b: info:eu-repo/semantics/article

336.#.#.3: Artículo de Investigación

336.#.#.a: Artículo

351.#.#.6: http://revistagi.geofisica.unam.mx/index.php/RGI

351.#.#.b: Geofísica Internacional

351.#.#.a: Artículos

harvesting_group: RevistasUNAM

270.1.#.p: Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

590.#.#.c: Open Journal Systems (OJS)

270.#.#.d: MX

270.1.#.d: México

590.#.#.b: Concentrador

883.#.#.u: http://www.revistas.unam.mx/front/

883.#.#.a: Revistas UNAM

590.#.#.a: Coordinación de Difusión Cultural

883.#.#.1: https://www.publicaciones.unam.mx/

883.#.#.q: Dirección General de Publicaciones y Fomento Editorial, UNAM

850.#.#.a: Universidad Nacional Autónoma de México

856.4.0.u: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/601/584

100.1.#.a: Delgado Granados, Hugo

524.#.#.a: Delgado Granados, Hugo. (1993). Late Cenozoic tectonics offshore western Mexico and its relation to the structure and volcanic activity in the western Trans-Mexican Volcanic Belt. Geofísica Internacional; Vol. 32 No. 4, 1993. Recuperado de https://repositorio.unam.mx/contenidos/42562

245.1.0.a: Late Cenozoic tectonics offshore western Mexico and its relation to the structure and volcanic activity in the western Trans-Mexican Volcanic Belt

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 1993

264.#.1.c: 2013-06-10

653.#.#.a: Plate kinematics; tectonics; volcanism; Trans-Mexican Volcanic Belt; Rivera plate; convergence rate; spreading rate.; Cinemática de placas; tectónica; volcanismo; Faja Volcánica Trans-Mexicana; placa de Rivera; tasa de convergencia; tasa de esparcimiento.

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-ND 4.0 Internacional, https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es, fecha de asignación de la licencia 2013-06-10, para un uso diferente consultar al responsable jurídico del repositorio por medio de revistagi@igeofisica.unam.mx

884.#.#.k: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/601

001.#.#.#: oai:ojs.ojs.geofisica.unam.mx:article/601

041.#.7.h: spa

520.3.#.a: The calculated convergence rate indicates that tectonics has been tensional in western Mexico for the last 3 m.y. This deformation style is expressed in the formation of rift structures in the western Trans-Mexican Volcanic Belt [TMVB] the obtained values for the convergence rate predict less tensional tectonics (tending to be neutral) in the southeastern part of the interacting zone Rivera-North America, but more tensional in the northwestern part through time. On the other hand, a qualitative analysis of the spreading rates shows that they were systematically faster before 6.5 Ma than after. Subsequently, after testing different kinematic parameters, it was concluded that spreading rate of the Pacific-Rivera rise strongly influences the convergence rate. Therefore, a positive correlation between the evolution of spreading rate of the Pacific-Rivera rise and geology onland can be made. This correlation shows that relatively fast spreading rate coincidences with monogenetic calc-alkaline volcanism in the western TMVB at least since 10 m.y. ago. Nevertheless, this kind of volcanism has continued up to the present. This spreading rate became much slower (and therefore convergences rate became slower) during the period 6.5 Ma-3.5 Ma. Coinciding with widespread extensional tectonics, explosive volcanism and lacustrine sedimentation in the Colima, Tepic-Zacoalco and Chapala rifts, and between 4.6 Ma and 3.9 Ma with alkaline volcanism in the Colima and Tepic-Zacoalco rifts. A slight increase in the spreading rate after 3.5 Ma coincidences with a decrease in volcanic activity (mainly alkaline). During 1.7 Ma-0.7 Ma, this spreading rate slowed down again coinciding with continuous normal faulting in the Colima, Tepic-Zacoalco and Chapala rifts, and in part with another period of alkaline volcanism (1.4 Ma-0.2 Ma) in the Colima and Tepic-Zacoalco rifts After 0.7 Ma, the spreading rate became slightly faster. A genetic relationship of the content of incompatible elements in volcanic rocks of the region to convergence rate was found, implying that higher subduction rate supplies more accreted sediments in the mantle wedge. This is used to explain geochemical differences among volcanic rocks along the volcanic front of the western TMVB.

773.1.#.t: Geofísica Internacional; Vol. 32 No. 4 (1993)

773.1.#.o: http://revistagi.geofisica.unam.mx/index.php/RGI

046.#.#.j: 2020-10-20 00:00:00.000000

022.#.#.a: 0016-7169

310.#.#.a: Trimestral

264.#.1.b: Instituto de Geofísica, UNAM

758.#.#.1: http://revistagi.geofisica.unam.mx/index.php/RGI

handle: 32055d0c7e18311c

harvesting_date: 2020-09-23 00:00:00.0

856.#.0.q: application/pdf

file_modification_date: 2014-12-23 15:10:37.0

last_modified: 2020-10-21 00:00:00

license_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es

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Artículo

Late Cenozoic tectonics offshore western Mexico and its relation to the structure and volcanic activity in the western Trans-Mexican Volcanic Belt

Delgado Granados, Hugo

Instituto de Geofísica, UNAM, publicado en Geofísica Internacional, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Entidad o dependencia
Instituto de Geofísica, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

Delgado Granados, Hugo. (1993). Late Cenozoic tectonics offshore western Mexico and its relation to the structure and volcanic activity in the western Trans-Mexican Volcanic Belt. Geofísica Internacional; Vol. 32 No. 4, 1993. Recuperado de https://repositorio.unam.mx/contenidos/42562

Descripción del recurso

Autor(es)
Delgado Granados, Hugo
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Late Cenozoic tectonics offshore western Mexico and its relation to the structure and volcanic activity in the western Trans-Mexican Volcanic Belt
Fecha
2013-06-10
Resumen
The calculated convergence rate indicates that tectonics has been tensional in western Mexico for the last 3 m.y. This deformation style is expressed in the formation of rift structures in the western Trans-Mexican Volcanic Belt [TMVB] the obtained values for the convergence rate predict less tensional tectonics (tending to be neutral) in the southeastern part of the interacting zone Rivera-North America, but more tensional in the northwestern part through time. On the other hand, a qualitative analysis of the spreading rates shows that they were systematically faster before 6.5 Ma than after. Subsequently, after testing different kinematic parameters, it was concluded that spreading rate of the Pacific-Rivera rise strongly influences the convergence rate. Therefore, a positive correlation between the evolution of spreading rate of the Pacific-Rivera rise and geology onland can be made. This correlation shows that relatively fast spreading rate coincidences with monogenetic calc-alkaline volcanism in the western TMVB at least since 10 m.y. ago. Nevertheless, this kind of volcanism has continued up to the present. This spreading rate became much slower (and therefore convergences rate became slower) during the period 6.5 Ma-3.5 Ma. Coinciding with widespread extensional tectonics, explosive volcanism and lacustrine sedimentation in the Colima, Tepic-Zacoalco and Chapala rifts, and between 4.6 Ma and 3.9 Ma with alkaline volcanism in the Colima and Tepic-Zacoalco rifts. A slight increase in the spreading rate after 3.5 Ma coincidences with a decrease in volcanic activity (mainly alkaline). During 1.7 Ma-0.7 Ma, this spreading rate slowed down again coinciding with continuous normal faulting in the Colima, Tepic-Zacoalco and Chapala rifts, and in part with another period of alkaline volcanism (1.4 Ma-0.2 Ma) in the Colima and Tepic-Zacoalco rifts After 0.7 Ma, the spreading rate became slightly faster. A genetic relationship of the content of incompatible elements in volcanic rocks of the region to convergence rate was found, implying that higher subduction rate supplies more accreted sediments in the mantle wedge. This is used to explain geochemical differences among volcanic rocks along the volcanic front of the western TMVB.
Tema
Plate kinematics; tectonics; volcanism; Trans-Mexican Volcanic Belt; Rivera plate; convergence rate; spreading rate.; Cinemática de placas; tectónica; volcanismo; Faja Volcánica Trans-Mexicana; placa de Rivera; tasa de convergencia; tasa de esparcimiento.
Idioma
spa
ISSN
0016-7169

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