Holocene paleo-earthquakes recorded at the transfer zone of two majorfaults: the Pastores and Venta de Bravo fault (Trans-Mexican Volcanic Belt).

We present evidence of fi ve late Holocene earthquake ruptures observed at two paleoseismological trenches in the Laguna Bañí sag pond (Trans-Mexican Volcanic Belt, central Mexico). The trenches exposed two fault branches of the western termination of the Pastores fault, one of the major fault syste...

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Autores: Ortuño Candela, Maria, Zúniga, F. Ramón, Aguirre-Díaz, Gerardo, Carreón-Freyre, Dora, Cerca, Mariano, Roverato, Matteo
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2015
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/163424
Acceso en línea:https://hdl.handle.net/2445/163424
Access Level:acceso abierto
Palabra clave:Paleosismologia
Terratrèmols
Mèxic
Paleoseismology
Earthquakes
Mexico
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spelling Holocene paleo-earthquakes recorded at the transfer zone of two majorfaults: the Pastores and Venta de Bravo fault (Trans-Mexican Volcanic Belt).Ortuño Candela, MariaZúniga, F. RamónAguirre-Díaz, GerardoCarreón-Freyre, DoraCerca, MarianoRoverato, MatteoPaleosismologiaTerratrèmolsMèxicPaleoseismologyEarthquakesMexicoWe present evidence of fi ve late Holocene earthquake ruptures observed at two paleoseismological trenches in the Laguna Bañí sag pond (Trans-Mexican Volcanic Belt, central Mexico). The trenches exposed two fault branches of the western termination of the Pastores fault, one of the major fault systems within the central Trans-Mexican Volcanic Belt. The site was studied by combining geomorphological and structural approaches, volcanic mapping, ground-penetrating radar, and paleoseismological analysis. The study revealed that coseismic surface rupture was noncharacteristic, and that the exposed fault branches had not always moved simultaneously. The fault tip has ruptured at least 5 times within the past 4 k.y., and the rupture events followed and preceded the deposition of an ignimbrite. The close temporal relationship of the seismic rupture with the volcanic activity of the area could be the result of volcanism triggered by faulting and its associated seismicity. The relatively high recurrence of seismic events (1.1 2.6 k.y.) and the noncharacteristic fault behavior observed at this tip of the Pastores fault suggest that the fault might have been active as a primary fault rupturing along segments of variable length or depth, and/or that the fault ruptured eventually as a secondary fault. The secondary ruptures would likely be related to earthquakes produced at major neighboring faults such as the Acambay fault, which moved during the 1912 Acambay earthquake, or the Venta de Bravo fault. A relatively large slip rate estimated for this fault branch (0.23 0.37 mm/yr) leads us to contemplate the possible connection at depth between the Pastores and the Venta de Bravo faults, increasing the maximum expected magnitude for central Mexico.Geological Society of America2020202020152020info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion66 p.application/pdfhttps://hdl.handle.net/2445/163424Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1130/GES01071.1Geosphere, 2015, vol. 11, num. 1, p. 160-184https://doi.org/10.1130/GES01071.1(c) Geological Society of America, 2015info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1634242026-05-29T05:05:01Z
dc.title.none.fl_str_mv Holocene paleo-earthquakes recorded at the transfer zone of two majorfaults: the Pastores and Venta de Bravo fault (Trans-Mexican Volcanic Belt).
title Holocene paleo-earthquakes recorded at the transfer zone of two majorfaults: the Pastores and Venta de Bravo fault (Trans-Mexican Volcanic Belt).
spellingShingle Holocene paleo-earthquakes recorded at the transfer zone of two majorfaults: the Pastores and Venta de Bravo fault (Trans-Mexican Volcanic Belt).
Ortuño Candela, Maria
Paleosismologia
Terratrèmols
Mèxic
Paleoseismology
Earthquakes
Mexico
title_short Holocene paleo-earthquakes recorded at the transfer zone of two majorfaults: the Pastores and Venta de Bravo fault (Trans-Mexican Volcanic Belt).
title_full Holocene paleo-earthquakes recorded at the transfer zone of two majorfaults: the Pastores and Venta de Bravo fault (Trans-Mexican Volcanic Belt).
title_fullStr Holocene paleo-earthquakes recorded at the transfer zone of two majorfaults: the Pastores and Venta de Bravo fault (Trans-Mexican Volcanic Belt).
title_full_unstemmed Holocene paleo-earthquakes recorded at the transfer zone of two majorfaults: the Pastores and Venta de Bravo fault (Trans-Mexican Volcanic Belt).
title_sort Holocene paleo-earthquakes recorded at the transfer zone of two majorfaults: the Pastores and Venta de Bravo fault (Trans-Mexican Volcanic Belt).
dc.creator.none.fl_str_mv Ortuño Candela, Maria
Zúniga, F. Ramón
Aguirre-Díaz, Gerardo
Carreón-Freyre, Dora
Cerca, Mariano
Roverato, Matteo
author Ortuño Candela, Maria
author_facet Ortuño Candela, Maria
Zúniga, F. Ramón
Aguirre-Díaz, Gerardo
Carreón-Freyre, Dora
Cerca, Mariano
Roverato, Matteo
author_role author
author2 Zúniga, F. Ramón
Aguirre-Díaz, Gerardo
Carreón-Freyre, Dora
Cerca, Mariano
Roverato, Matteo
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Paleosismologia
Terratrèmols
Mèxic
Paleoseismology
Earthquakes
Mexico
topic Paleosismologia
Terratrèmols
Mèxic
Paleoseismology
Earthquakes
Mexico
description We present evidence of fi ve late Holocene earthquake ruptures observed at two paleoseismological trenches in the Laguna Bañí sag pond (Trans-Mexican Volcanic Belt, central Mexico). The trenches exposed two fault branches of the western termination of the Pastores fault, one of the major fault systems within the central Trans-Mexican Volcanic Belt. The site was studied by combining geomorphological and structural approaches, volcanic mapping, ground-penetrating radar, and paleoseismological analysis. The study revealed that coseismic surface rupture was noncharacteristic, and that the exposed fault branches had not always moved simultaneously. The fault tip has ruptured at least 5 times within the past 4 k.y., and the rupture events followed and preceded the deposition of an ignimbrite. The close temporal relationship of the seismic rupture with the volcanic activity of the area could be the result of volcanism triggered by faulting and its associated seismicity. The relatively high recurrence of seismic events (1.1 2.6 k.y.) and the noncharacteristic fault behavior observed at this tip of the Pastores fault suggest that the fault might have been active as a primary fault rupturing along segments of variable length or depth, and/or that the fault ruptured eventually as a secondary fault. The secondary ruptures would likely be related to earthquakes produced at major neighboring faults such as the Acambay fault, which moved during the 1912 Acambay earthquake, or the Venta de Bravo fault. A relatively large slip rate estimated for this fault branch (0.23 0.37 mm/yr) leads us to contemplate the possible connection at depth between the Pastores and the Venta de Bravo faults, increasing the maximum expected magnitude for central Mexico.
publishDate 2015
dc.date.none.fl_str_mv 2015
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/163424
url https://hdl.handle.net/2445/163424
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1130/GES01071.1
Geosphere, 2015, vol. 11, num. 1, p. 160-184
https://doi.org/10.1130/GES01071.1
dc.rights.none.fl_str_mv (c) Geological Society of America, 2015
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Geological Society of America, 2015
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 66 p.
application/pdf
dc.publisher.none.fl_str_mv Geological Society of America
publisher.none.fl_str_mv Geological Society of America
dc.source.none.fl_str_mv Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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