dor_id: 4133285

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/985/928

100.1.#.a: Cameron, K.L.; Cameron, M.; Barreiro, B.

524.#.#.a: Cameron, K.L., et al. (1986). Origin of voluminous mid-tertiary ignimbrites of the batopilas region, Chihuahua: implications for the formation of continental crust beneath the Sierra Madre Occidental. Geofísica Internacional; Vol. 25 Núm. 1: Enero 1, 1986; 39-59. Recuperado de https://repositorio.unam.mx/contenidos/4133285

245.1.0.a: Origin of voluminous mid-tertiary ignimbrites of the batopilas region, Chihuahua: implications for the formation of continental crust beneath the Sierra Madre Occidental

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

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 1986

264.#.1.c: 1986-01-01

653.#.#.a: Ignimbritas; Terciario medio; Corteza continental; Ignimbrites; Middle Tertiary; Continental Crust; Sierra Madre Occidental; Batopilas-Chihuahua

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/985

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/985

041.#.7.h: spa

520.3.#.a: The voluminous rhyolitic ignimbrites of the Batopilas region of the northem Sierra Madre Occidental are interlayered with minor amounts of andesitic and dacitic lava flows. Severa lines of evidence indicate that this andesite - dacite - rhyolite series is comagmatic. For example, the series is chemically distinct from older and younger igneous rocks found in the same geographical region; it lacks systematic variations in isotopic compositions; and trace element variations within the series can be modeled by Rayleigh fractionation calculations. Variations in Sr concentrations are inconsistent with a partía! melting origin for the series, and the voluminous rhyolites of the Batopilas region appear to be the product of essentially closed-system fractional crystallization of magmas from a subcrustal source. Additional published data on mid-Tertiary rhyolites from four other areas of the Sierra Madre Occidental establish that these rocks are isotopically heterogeneous compared to those from Batopilas and that sorne of them clearly contain a crustal componen t. The subcrustal source region beneath the Sierra Madre Occidental is believed to have 87Sr/86Sr between about 0.7042 and 0.7050, and €Nd near O. Most analyzed rhyolites have initial 87Sr/86sr < O. 7070 and their isotopic compositions can be explained by an assimilation - fractional crystallization model that involves less than 25°/4:, of a crustal component. The extrusion of the Upper Volcanic sequence and the emplacement of the underlying batholith marked a major crust forming event in western Mexico.doi: https://doi.org/10.22201/igeof.00167169p.1986.25.1.800

773.1.#.t: Geofísica Internacional; Vol. 25 Núm. 1: Enero 1, 1986; 39-59

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: 39-59

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

doi: https://doi.org/10.22201/igeof.00167169p.1986.25.1.800

handle: 4cf96ddf041d0cb3

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

856.#.0.q: application/pdf

file_creation_date: 2008-06-25 23:42:13.0

file_modification_date: 2022-07-15 10:20:47.0

file_creator: K.L. Cameron

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245.1.0.b: Origin of voluminous mid-tertiary ignimbrites of the batopilas region, Chihuahua: implications for the formation of continental crust beneath the Sierra Madre Occidental

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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