dor_id: 42566

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/605/588

100.1.#.a: Luhr, James F.

524.#.#.a: Luhr, James F. (1993). Petrology and geochemistry of stage-I andesites and dacites from the caldera wall of Volcán Colima, Mexico. Geofísica Internacional; Vol. 32 No. 4, 1993. Recuperado de https://repositorio.unam.mx/contenidos/42566

245.1.0.a: Petrology and geochemistry of stage-I andesites and dacites from the caldera wall of Volcán Colima, Mexico.

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: Colima; Mexico; calc-alkaline andesite; dacite; slab melting.; Colima; México; adesita calcialcalina; dacita; fusión de la placa.

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/605

001.#.#.#: oai:ojs.ojs.geofisica.unam.mx:article/605

041.#.7.h: spa

520.3.#.a: Major and trace element concentrations and modes are reported for 10 andesitic and dacitic lavas from stage-I activity at Volcán Colima. Nine of these samples were collected from the walls of the summit caldera, formed by one or more major, Mount St. Helens-type collapse events during the Holocene. These data are contrasted with data for lavas erupted during stage II, following formation of the caldera, and are also discussed in the light of all available analyses for the southward-younging volcanic chain that runs from Volcán Cántaro in the north, through Nevado de Colima, to Volcán Colima in the south. Both the stage-I and the stage-II lavas of Volcán Colima are significantly richer in SiO2 than contemporaneous scoriae erupted during the Holocene. Stage-I lavas range to higher SiO2 values tan stage-II lavas, however, a pattern that is also evident in the evolution of magma compositions with time at Nevado. The lavas from Volcán Cántaro are relatively enriched in K2O, Sr, La, Ce, and Sm compared to all samples from stage from the stage-II activity at Volcán Colima, but four of the stage-I lavas discussed in this paper also show these enrichments. Compared to the stage-II Volcán Colima lavas, those from both stage I and front Volcán Cántaro have lower Yb and Lu abundances and higher La/Yb and Sr/Yb values. These features probably reflect a relatively greater role for residual gamet in the source regions for the earlier magmas, which would act to retain the heavy rare earth elements. The lavas from Volcán Cántaro and the stage-I from Volcán Colima also show relatively lower Rb/Sr values than the stage-II lavas. This difference could reflect a shift with time away from a mantle source containing amphibole of any other mineral that could retain Rb upon melting. The preferred interpretation for the transition to higher Yb, Lu, and Rb/Sr and lower La/Yb and Sr/Yb following caldera formation at Volcán Colima is a shift in the relative contributions of source components to the magmas, with a decrease in melting of the garnet-amphibole-bearing subducted slab, and an increase in melts derived from the overlying mantle wedge.

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: 00f644206b8d1ecc

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

license_type: by-nc-nd

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