dor_id: 4132652

506.#.#.a: Público

590.#.#.d: Los artículos enviados a la revista "Geofísica Internacional", se juzgan por medio de un proceso de revisión por pares

510.0.#.a: Consejo Nacional de Ciencia y Tecnología (CONACyT); Scientific Electronic Library Online (SciELO); SCOPUS, Dialnet, Directory of Open Access Journals (DOAJ); Geobase

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

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

336.#.#.b: 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: https://revistas.unam.mx/catalogo/

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

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

856.4.0.u: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1081/1012

100.1.#.a: Nixon, G. T.; Demant, A.; Armstrong, R. L.; Harakal, J. E.

524.#.#.a: Nixon, G. T., et al. (1987). K-ar and geologic data bearing on the age and evolution of the Trans-Mexican Volcanic Belt. Geofísica Internacional; Vol. 26 Núm. 1: Enero 1, 1987; 109-158. Recuperado de https://repositorio.unam.mx/contenidos/4132652

245.1.0.a: K-ar and geologic data bearing on the age and evolution of the Trans-Mexican Volcanic Belt

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

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 1987

264.#.1.c: 1987-01-01

653.#.#.a: Geología; edad; evolución; faja volcánica transmexicana; Geology; age; evolution; trans-mexican volcanic belt

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-SA 4.0 Internacional, https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico revistagi@igeofisica.unam.mx

884.#.#.k: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1081

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/1081

041.#.7.h: spa

520.3.#.a: New and published K-Ar dates and geologic mapping in the western and central parts of the Trans-Mexican Volcanic Belt (TMVB) provide a basis for examining the evolution of Late Cenozoic volcanism in Central Mexico. The modem volcanic arc, composed principally of calc-alkaline andesite and dacite, was formed during the Quaternary and its development is intimately connected with the contrasting subduction regimes of the Rivera and northern Cocos plates. Major andesitic centers in the western TMVB that lie above the subducted portion of the Rivera plate began to evolve between 0.6 and 0.2 Ma. However, in the central and eastern parts of the arc where subduction of the Cocos plate is taking place, the construction of andesite-dacife cones started considerably earlier at approximately 1.7 Ma. The width of active arc above the subducted Cocos plate has decreased appreciably during the Quaternary such that andesitic volcanism is currently focused nearest the trench. The early extinction of volcanism in the backarc region explains why historically active volcanoes are commonly found at the volcanic front and why they generally provide a more complete record of Quaternary volcanism. Their large volumes are a direct consequence of their longevity. The average eruption rates for major Quaternary cones are estimated at 0.2 - 0.3 km³/ka and do not appear particularly sensitive to differences in the rate of subduction. The development of an E-W - trending calc-alkaline arc system in Central Mexico probably dates back to Late Miocene or Early Pliocene. Arc volcanism since that time has migrated trenchward arriving at its present position by Early Quaternary time. Exposures of Early Pliocene to Recent K-rich lamprophyres in the Colima graben exhibit space-time patterns correlative with those deduced for coeval calc-alkaline volcanism and point to subduction as the common causative mechanism. Early Pliocene rifting and lamprophyric activity in the Colima graben are linked to the early stages of formation of a transform boundary separating the Cocos and Rivera plates. Today, this seismically active transform continues to be subducted beneath the Colima graben. Sodic alkaline suites in the westernmost part of the TMVB may represent backarc volcanism or be related to poorly understood phenomena occurring at the termination of subduction zones.doi: https://doi.org/10.22201/igeof.00167169p.1987.26.1.1191

773.1.#.t: Geofísica Internacional; Vol. 26 Núm. 1: Enero 1, 1987; 109-158

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

022.#.#.a: ISSN-L: 2954-436X; ISSN impreso: 0016-7169

310.#.#.a: Trimestral

300.#.#.a: Páginas: 109-158

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

doi: https://doi.org/10.22201/igeof.00167169p.1987.26.1.1191

handle: 00fd07fc1feeab5d

harvesting_date: 2023-06-20 16:00:00.0

856.#.0.q: application/pdf

file_creation_date: 2008-06-25 22:17:00.0

file_modification_date: 2022-07-14 05:07:15.0

file_creator: G.T. Nixon

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245.1.0.b: K-ar and geologic data bearing on the age and evolution of the Trans-Mexican Volcanic Belt

last_modified: 2023-06-20 16:00:00

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

license_type: by-nc-sa

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