El Chichón volcanic complex, Chiapas, México: Stages of evolution based on field mapping and 40Ar/39Ar geochronology

A new interpretation of the evolution of El Chichón volcano is presented in this paper based on photogeology, fieldwork, 40Ar/39Ar dating and chemistry of juvenile products. El Chichón volcano belongs to a volcanic complex formed by craters and peripheral domes with a total estimated volume of ~26 k...

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Autores: P. W. Layer, A García-Palomo, D. Jones, J. L. Macías, J. L. Arce, J. C. Mora
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2009
País:México
Recursos:Universidad Nacional Autónoma de México
Repositorio:Redalyc-UNAM
OAI Identifier:oai:redalyc.org:56813222004
Acesso em linha:https://www.redalyc.org/articulo.oa?id=56813222004
Access Level:acceso abierto
Palavra-chave:Ciencias de la Tierra
40Ar
México
Chichón
evolution
39Ar dating
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spelling El Chichón volcanic complex, Chiapas, México: Stages of evolution based on field mapping and 40Ar/39Ar geochronologyP. W. LayerA García-PalomoD. JonesJ. L. MacíasJ. L. ArceJ. C. MoraCiencias de la Tierra40ArMéxicoChichónevolution39Ar datingA new interpretation of the evolution of El Chichón volcano is presented in this paper based on photogeology, fieldwork, 40Ar/39Ar dating and chemistry of juvenile products. El Chichón volcano belongs to a volcanic complex formed by craters and peripheral domes with a total estimated volume of ~26 km³. Our data suggest that inception of magmatism began around 370 ka with the emission of lava domes buried by younger products. The activity continued with the formation of a large andesitic dome complex between 209 and 276 and associated block and ash flows and lahars. The dome complex was subsequently destroyed by a major eruption that left a 1.5-km wide Somma-type crater. The activity continued with the extrusion of the SW dome at 217 ka, that partially disrupted the southwestern Somma crater wall. Later on a series of dome extrusions occurred beyond the northwestern sector of the Somma crater at about 95 ka. Juvenile blocks found in 1982 products yielded ages of 44 and 29 ka attesting to heretofore unidentified late Pleistocene activity. The onset of Holocene activity occurred both outside the Somma crater with explosive eruptions that formed the Guayabal Tuff Cone and inside the Somma crater with the formation of a tuff cone that has been repeatedly reactivated during the Holocene, lastly during the 1982 eruption. All magmas produced during the past 370,000 years are K-alkaline andesites that exhibit minor variation in their chemical composition. An average discharge rate of 0.5 km³/ka is calculated during the past 8,000 years (~4 km³).Universidad Nacional Autónoma de México2009info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdf0016-7169https://www.redalyc.org/articulo.oa?id=56813222004Geofísica Internacional (México) Num.1 Vol.48reponame:Redalyc-UNAMinstname:Universidad Nacional Autónoma de Méxicoinstacron:UNAMenhttp://www.redalyc.org/revista.oa?id=568Geofísica Internacionalinfo:eu-repo/semantics/openAccessoai:redalyc.org:568132220042025-09-03T18:06:16Z
dc.title.none.fl_str_mv El Chichón volcanic complex, Chiapas, México: Stages of evolution based on field mapping and 40Ar/39Ar geochronology
title El Chichón volcanic complex, Chiapas, México: Stages of evolution based on field mapping and 40Ar/39Ar geochronology
spellingShingle El Chichón volcanic complex, Chiapas, México: Stages of evolution based on field mapping and 40Ar/39Ar geochronology
P. W. Layer
Ciencias de la Tierra
40Ar
México
Chichón
evolution
39Ar dating
title_short El Chichón volcanic complex, Chiapas, México: Stages of evolution based on field mapping and 40Ar/39Ar geochronology
title_full El Chichón volcanic complex, Chiapas, México: Stages of evolution based on field mapping and 40Ar/39Ar geochronology
title_fullStr El Chichón volcanic complex, Chiapas, México: Stages of evolution based on field mapping and 40Ar/39Ar geochronology
title_full_unstemmed El Chichón volcanic complex, Chiapas, México: Stages of evolution based on field mapping and 40Ar/39Ar geochronology
title_sort El Chichón volcanic complex, Chiapas, México: Stages of evolution based on field mapping and 40Ar/39Ar geochronology
dc.creator.none.fl_str_mv P. W. Layer
A García-Palomo
D. Jones
J. L. Macías
J. L. Arce
J. C. Mora
author P. W. Layer
author_facet P. W. Layer
A García-Palomo
D. Jones
J. L. Macías
J. L. Arce
J. C. Mora
author_role author
author2 A García-Palomo
D. Jones
J. L. Macías
J. L. Arce
J. C. Mora
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias de la Tierra
40Ar
México
Chichón
evolution
39Ar dating
topic Ciencias de la Tierra
40Ar
México
Chichón
evolution
39Ar dating
description A new interpretation of the evolution of El Chichón volcano is presented in this paper based on photogeology, fieldwork, 40Ar/39Ar dating and chemistry of juvenile products. El Chichón volcano belongs to a volcanic complex formed by craters and peripheral domes with a total estimated volume of ~26 km³. Our data suggest that inception of magmatism began around 370 ka with the emission of lava domes buried by younger products. The activity continued with the formation of a large andesitic dome complex between 209 and 276 and associated block and ash flows and lahars. The dome complex was subsequently destroyed by a major eruption that left a 1.5-km wide Somma-type crater. The activity continued with the extrusion of the SW dome at 217 ka, that partially disrupted the southwestern Somma crater wall. Later on a series of dome extrusions occurred beyond the northwestern sector of the Somma crater at about 95 ka. Juvenile blocks found in 1982 products yielded ages of 44 and 29 ka attesting to heretofore unidentified late Pleistocene activity. The onset of Holocene activity occurred both outside the Somma crater with explosive eruptions that formed the Guayabal Tuff Cone and inside the Somma crater with the formation of a tuff cone that has been repeatedly reactivated during the Holocene, lastly during the 1982 eruption. All magmas produced during the past 370,000 years are K-alkaline andesites that exhibit minor variation in their chemical composition. An average discharge rate of 0.5 km³/ka is calculated during the past 8,000 years (~4 km³).
publishDate 2009
dc.date.none.fl_str_mv 2009
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv 0016-7169
https://www.redalyc.org/articulo.oa?id=56813222004
identifier_str_mv 0016-7169
url https://www.redalyc.org/articulo.oa?id=56813222004
dc.language.none.fl_str_mv en
language_invalid_str_mv en
dc.relation.none.fl_str_mv http://www.redalyc.org/revista.oa?id=568
dc.rights.none.fl_str_mv Geofísica Internacional
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Geofísica Internacional
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad Nacional Autónoma de México
publisher.none.fl_str_mv Universidad Nacional Autónoma de México
dc.source.none.fl_str_mv Geofísica Internacional (México) Num.1 Vol.48
reponame:Redalyc-UNAM
instname:Universidad Nacional Autónoma de México
instacron:UNAM
instname_str Universidad Nacional Autónoma de México
instacron_str UNAM
institution UNAM
reponame_str Redalyc-UNAM
collection Redalyc-UNAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,198674

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