dor_id: 42046

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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)

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

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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

270.1.#.d: México

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856.4.0.u: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1067/1047

100.1.#.a: Ferriz., H.

524.#.#.a: Ferriz., H. (1985). Zoneamiento composicional y mineralógico en los productos eruptivos del centro volcánico de los humeros, Puebla, México. Geofísica Internacional; Vol. 24 No. 1, 1985. Recuperado de https://repositorio.unam.mx/contenidos/42046

245.1.0.a: Zoneamiento composicional y mineralógico en los productos eruptivos del centro volcánico de los humeros, Puebla, México

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

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 1985

264.#.1.c: 2012-12-19

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 2012-12-19, 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/1067

001.#.#.#: oai:ojs.ojs.geofisica.unam.mx:article/1067

041.#.7.h: spa

520.3.#.a: Los Humeros volcanic center, located 180 km east of Mexico City, is one of several silicic volcanic centers located in the "back-arc" portion of the Mexican Neovolcanic Belt. During the last 460 000 years, three major plinian eruptions and two major episodes of lava flow emplacement periodically "sampled" the magma Chamber. The eruptive products of these events are compositionally zoned and indicate that the magma chamber was zoned from rhyolitic upper-most levels to andesitic or perhaps even basaltic lower levels. Strong compositional zonation persisted throughout the lifetinre of the system.In general, the most silicio products of each plinian eruption are either aphyric or are characterized by the lowest phenocryst contents and sirnplest phenocryst assemblages (plagioclase, Fe-Ti oxides, and biotite or orthopyroxene). Clinopyroxene and olivine make their appearance in progressively more mafic products of each eruption. Ca/Na ratios of plagioclase and Mg/Fe ratios of the mafic phenocrysts increase as the eruptive products become more mafic. Phenocryst content increases progressively, reaches a maximum in rhyodacitic and andesitic compositions, and then decreases in basaltic andesite compositions. Changes in phenocry st assemblages and abundances are probably a consequence of superirnposed gradients in composition, temperature, and volatile content in the magma Chamber. Temperaturas calculated from Fe-Ti-oxide geothermometry range from 800 to 875°C for the upperrnost rhyolitic levels of the chamber, 860 to 940°C for the rhyodacitic portions, and 920 to 1000°C for the andesitic portions.

773.1.#.t: Geofísica Internacional; Vol. 24 No. 1 (1985)

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

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

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Artículo

Zoneamiento composicional y mineralógico en los productos eruptivos del centro volcánico de los humeros, Puebla, México

Ferriz., H.

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

Ferriz., H. (1985). Zoneamiento composicional y mineralógico en los productos eruptivos del centro volcánico de los humeros, Puebla, México. Geofísica Internacional; Vol. 24 No. 1, 1985. Recuperado de https://repositorio.unam.mx/contenidos/42046

Descripción del recurso

Autor(es)
Ferriz., H.
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Zoneamiento composicional y mineralógico en los productos eruptivos del centro volcánico de los humeros, Puebla, México
Fecha
2012-12-19
Resumen
Los Humeros volcanic center, located 180 km east of Mexico City, is one of several silicic volcanic centers located in the "back-arc" portion of the Mexican Neovolcanic Belt. During the last 460 000 years, three major plinian eruptions and two major episodes of lava flow emplacement periodically "sampled" the magma Chamber. The eruptive products of these events are compositionally zoned and indicate that the magma chamber was zoned from rhyolitic upper-most levels to andesitic or perhaps even basaltic lower levels. Strong compositional zonation persisted throughout the lifetinre of the system.In general, the most silicio products of each plinian eruption are either aphyric or are characterized by the lowest phenocryst contents and sirnplest phenocryst assemblages (plagioclase, Fe-Ti oxides, and biotite or orthopyroxene). Clinopyroxene and olivine make their appearance in progressively more mafic products of each eruption. Ca/Na ratios of plagioclase and Mg/Fe ratios of the mafic phenocrysts increase as the eruptive products become more mafic. Phenocryst content increases progressively, reaches a maximum in rhyodacitic and andesitic compositions, and then decreases in basaltic andesite compositions. Changes in phenocry st assemblages and abundances are probably a consequence of superirnposed gradients in composition, temperature, and volatile content in the magma Chamber. Temperaturas calculated from Fe-Ti-oxide geothermometry range from 800 to 875°C for the upperrnost rhyolitic levels of the chamber, 860 to 940°C for the rhyodacitic portions, and 920 to 1000°C for the andesitic portions.
Idioma
spa
ISSN
0016-7169

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