dor_id: 4133019

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/1407/1411

100.1.#.a: Connor, Charles B.; Lane, Sammantha B.; Clement, Bradford M.

524.#.#.a: Connor, Charles B., et al. (1993). Structure and thermal characteristics of the Summit dome, March 1990 - March, 1991: Volcán Colima, Mexico. Geofísica Internacional; Vol. 32 Núm. 4: Octubre 1, 1993; 643-657. Recuperado de https://repositorio.unam.mx/contenidos/4133019

245.1.0.a: Structure and thermal characteristics of the Summit dome, March 1990 - March, 1991: Volcán Colima, Mexico

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

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 1993

264.#.1.c: 1993-10-01

653.#.#.a: Domo; Temperatura; Fumarolas; Magnetismo; Graben; Dome; Temperature; Fumarole Field; Magnetism; Graben

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/1407

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/1407

041.#.7.h: spa

520.3.#.a: A new exogcncous dome lobe erupted on the summit lava dome of Volcán de Colima, Mexico, early in March, 1991. Within the first day of cntptivc activity the new dome lobe grew to a volume of approximately 2,200 m3, was circular in shape, had a diameter of about 20m and a height of approximately 6.5 m. This dome lobe was surrounded by a shallow moat, from which degassing was intense. Radial fractures cxtend.:d from the dome lobe, indicating that principal horizontal compressional stresses were oriented radial to the dome at the time of extrusion. The most prominent faulting resulted in the formation of a small graben, approximately 20 111 in width and bounded by scarps with 3 m to 5 m of vertical displacement, extending NNW of the new dome lobe. Geophysical observations made on the summit lava dome throughout 1990 indicate that the initial extrusion of this dome lobe was controlled by a pre-existing structure. The dome lobe extruded approxiiJlately 30m south of the only high-temperature (350-575°C) fumarole field occurring on the summit dome during 1990. Four fumaroles monitored during March, May and December, 1990, degassed in a steady-stale from this field throughout 1990 at low mass Oows. Little change in mean fumarole temperatures occurred during this period. Ground magnetic observations collected in December, 1990, along a traverse across this ·high-temperature fumarole field reveal a short wavelength -2000nT magnetic anomaly, nearly centered on the fumarole field. Summit dome rocks have comparatively low magnetic susceptibilities (8.42xl0·6-8.06x10·5 mass-corrected Sl) and high remanent magnetizations (1.08 -5.57 A/m). Our model of the magnetic data, incorporating these rock magnetic observations, indicates that the source of the magnetic anomaly was a small, shallow body of rock which was heated by the ascending fumarole gases to above the NRM unblocking temperatures of summit dome rocks. This body of hot rock was elongated in a NNW direction and coincides exactly with the eastern scarp of the graben formed during the initial extrusion of the March, 1991 dome lobe. Application of a numerical heat and mass transfer model suggests that fumarole degassing in a steady-state and low mass flow from a shallow, volatilc-depleted magma, will create a thermal anomaly similar to that deduced from the magnetic model. Rock-aval:mching from high on the O:mks of the volcano is also most intense along the northern and southern extensions of the new graben. The coincidence of these structural and thermal features suggests that the NNW -trending graben formed during 1991 activity is the surface manifestation of a major structure transecting the upper edifice of the volcano, along which additional deformation may occur in the future.doi: https://doi.org/10.22201/igeof.00167169p.1993.32.4.609

773.1.#.t: Geofísica Internacional; Vol. 32 Núm. 4: Octubre 1, 1993; 643-657

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: 643-657

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

doi: https://doi.org/10.22201/igeof.00167169p.1993.32.4.609

handle: 00ab267143c111c9

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

856.#.0.q: application/pdf

file_creation_date: 2008-03-25 15:43:14.0

file_modification_date: 2022-07-29 06:13:31.0

file_creator: Charles B. Connor

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file_pages_number: 15

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245.1.0.b: Structure and thermal characteristics of the Summit dome, March 1990 - March, 1991: Volcán Colima, Mexico

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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