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

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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

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270.#.#.d: MX

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

856.4.0.u: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1080/1011

100.1.#.a: Macgee, J. J.; Tilling, R. I.; Duffield, W. A.

524.#.#.a: Macgee, J. J., et al. (1987). Petrologic characteristics of the 198. Geofísica Internacional; Vol. 26 Núm. 1: Enero 1, 1987; 85-108. Recuperado de https://repositorio.unam.mx/contenidos/4133038

245.1.0.a: Petrologic characteristics of the 198

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: Petrología; volcanología; volcanes; erupciones volcánicas; Petrology; volcanology; volcanoes; volcanic eruptions; volcán Chichón; Chiapas-Mexico

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/1080

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/1080

041.#.7.h: spa

520.3.#.a: Petrographic, bulk-chemical, and microprobe studies of a suite of rocks from El Chi chon volcano, Chiapas, Mexico, indicate that the juvenile materials of the 1982 and pre-1982 eruptions of the volcano have essentially the same mineralogy and chemistry. Our analytical data suggest that the magmatic products have remained uniform in chemical composition during the approximately 0.3 m.y. represented by the samples. Modally, plagioclase is the dominant phenocryst, followed by amphibole, clinopyroxene, and several minor phases, including anhydrite. The absence of anhydrite from all but one of the pre-1982 samples possibly reflects the effect of post-eruption leaching by meteoric water. Plagioclase phenocrysts are complexly zoned, with pronounced spikes in Ca contents occurring at boundaries between clear and inclusion-rich zones of the plagioclase. These anorthite-rich zones in plagioclase are likely produced by fluctuations in volatile pressure on the magma and may reflect the changes in El Chich6n"s magma reservoir in response to repetitive, explosive eruptive activity.doi: https://doi.org/10.22201/igeof.00167169p.1987.26.1.1190

773.1.#.t: Geofísica Internacional; Vol. 26 Núm. 1: Enero 1, 1987; 85-108

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: 85-108

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

doi: https://doi.org/10.22201/igeof.00167169p.1987.26.1.1190

handle: 00e0a2c66852bcde

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

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245.1.0.b: Petrologic characteristics of the 1982 and pre-1982 eruptive products of el Chichon Volcano, Chiapas, México

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Artículo

Petrologic characteristics of the 198

Macgee, J. J.; Tilling, R. I.; Duffield, W. A.

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

Macgee, J. J., et al. (1987). Petrologic characteristics of the 198. Geofísica Internacional; Vol. 26 Núm. 1: Enero 1, 1987; 85-108. Recuperado de https://repositorio.unam.mx/contenidos/4133038

Descripción del recurso

Autor(es)
Macgee, J. J.; Tilling, R. I.; Duffield, W. A.
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Petrologic characteristics of the 198
Fecha
1987-01-01
Resumen
Petrographic, bulk-chemical, and microprobe studies of a suite of rocks from El Chi chon volcano, Chiapas, Mexico, indicate that the juvenile materials of the 1982 and pre-1982 eruptions of the volcano have essentially the same mineralogy and chemistry. Our analytical data suggest that the magmatic products have remained uniform in chemical composition during the approximately 0.3 m.y. represented by the samples. Modally, plagioclase is the dominant phenocryst, followed by amphibole, clinopyroxene, and several minor phases, including anhydrite. The absence of anhydrite from all but one of the pre-1982 samples possibly reflects the effect of post-eruption leaching by meteoric water. Plagioclase phenocrysts are complexly zoned, with pronounced spikes in Ca contents occurring at boundaries between clear and inclusion-rich zones of the plagioclase. These anorthite-rich zones in plagioclase are likely produced by fluctuations in volatile pressure on the magma and may reflect the changes in El Chich6n"s magma reservoir in response to repetitive, explosive eruptive activity.doi: https://doi.org/10.22201/igeof.00167169p.1987.26.1.1190
Tema
Petrología; volcanología; volcanes; erupciones volcánicas; Petrology; volcanology; volcanoes; volcanic eruptions; volcán Chichón; Chiapas-Mexico
Idioma
spa
ISSN
ISSN-L: 2954-436X; ISSN impreso: 0016-7169

Enlaces