Morphotectonic characterization along the eastern portion of the main trace of Magallanes-Fagnano Fault System in Tierra del Fuego, Argentina

Autores
Onorato, Maria Romina; Perucca, Laura Patricia A.; Coronato, Andrea Maria Josefa; Prezzi, Claudia Beatriz; Blanc, Pablo Andrés; López, Ramiro; Magneres, Ignacio
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Magallanes-Fagnano Fault System (MFFS) constitutes the onshore segment of the transform boundary between the Scotia and South American plates. The objective of this study is to provide a characterization of the portion of the MFFS, extending from the eastern shore of the Fagnano Lake to the Atlantic coast of Argentina, from a geometric and morphotectonic approach. Detailed morphotectonic analyses of satellite images, plane recognition, digital topographic data, and field surveys allowed us to identify thirteen discrete fault sections. These sections were differentiated according to the morphological characteristics of scarps, natural exposures and other associated morphotectonic features. The main trace fault shows opposite north- and south-facing scarps alternating along strikes being descriptively characterized by their scarps, linear rivers and valleys, drainage anomalies (e.g. diverted, deflected or offset streams), behead meanders, wind gaps, sag ponds, pull-apart basins and linear ridges, among others features. The natural exposures of glacio-fluvial sand and gravel outcrops show Quaternary vertical and strike-slip deformation. It looks unlikely that the Magallanes-Fagnano Fault System (MFFS) could rupture along the entire ∼600 km length during an earthquake. Our results show that even large strike-slip faults may be divided into several discrete fault sections with distinctive morphotectonic features that could help to an increasing understanding of MFFS as a seismogenic source. In this way we suggest different fault sections as a contribution to the recognition of potential individual surface ruptures, which should be tested with further detailed data.
Fil: Onorato, Maria Romina. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Geología "Dr. Emiliano Aparicio"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Perucca, Laura Patricia A.. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Geología "Dr. Emiliano Aparicio"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Coronato, Andrea Maria Josefa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego, Antártida e Islas del Atlántico Sur. Instituto de Ciencias Polares, Ambientales y Recursos Naturales; Argentina
Fil: Prezzi, Claudia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Blanc, Pablo Andrés. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Geología "Dr. Emiliano Aparicio"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: López, Ramiro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Magneres, Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Materia
MAGALLANES-FAGNANO
NEOTECTONICS
QUATERNARY
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/175706
Acceder
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spelling Morphotectonic characterization along the eastern portion of the main trace of Magallanes-Fagnano Fault System in Tierra del Fuego, ArgentinaOnorato, Maria RominaPerucca, Laura Patricia A.Coronato, Andrea Maria JosefaPrezzi, Claudia BeatrizBlanc, Pablo AndrésLópez, RamiroMagneres, IgnacioMAGALLANES-FAGNANONEOTECTONICSQUATERNARYhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Magallanes-Fagnano Fault System (MFFS) constitutes the onshore segment of the transform boundary between the Scotia and South American plates. The objective of this study is to provide a characterization of the portion of the MFFS, extending from the eastern shore of the Fagnano Lake to the Atlantic coast of Argentina, from a geometric and morphotectonic approach. Detailed morphotectonic analyses of satellite images, plane recognition, digital topographic data, and field surveys allowed us to identify thirteen discrete fault sections. These sections were differentiated according to the morphological characteristics of scarps, natural exposures and other associated morphotectonic features. The main trace fault shows opposite north- and south-facing scarps alternating along strikes being descriptively characterized by their scarps, linear rivers and valleys, drainage anomalies (e.g. diverted, deflected or offset streams), behead meanders, wind gaps, sag ponds, pull-apart basins and linear ridges, among others features. The natural exposures of glacio-fluvial sand and gravel outcrops show Quaternary vertical and strike-slip deformation. It looks unlikely that the Magallanes-Fagnano Fault System (MFFS) could rupture along the entire ∼600 km length during an earthquake. Our results show that even large strike-slip faults may be divided into several discrete fault sections with distinctive morphotectonic features that could help to an increasing understanding of MFFS as a seismogenic source. In this way we suggest different fault sections as a contribution to the recognition of potential individual surface ruptures, which should be tested with further detailed data.Fil: Onorato, Maria Romina. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Geología "Dr. Emiliano Aparicio"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Perucca, Laura Patricia A.. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Geología "Dr. Emiliano Aparicio"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Coronato, Andrea Maria Josefa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego, Antártida e Islas del Atlántico Sur. Instituto de Ciencias Polares, Ambientales y Recursos Naturales; ArgentinaFil: Prezzi, Claudia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaFil: Blanc, Pablo Andrés. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Geología "Dr. Emiliano Aparicio"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: López, Ramiro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Magneres, Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaPergamon-Elsevier Science Ltd2021-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/175706Onorato, Maria Romina; Perucca, Laura Patricia A.; Coronato, Andrea Maria Josefa; Prezzi, Claudia Beatriz; Blanc, Pablo Andrés; et al.; Morphotectonic characterization along the eastern portion of the main trace of Magallanes-Fagnano Fault System in Tierra del Fuego, Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 112; 12-2021; 1-320895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0895981121003965info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2021.103550info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:06:59Zoai:ri.conicet.gov.ar:11336/175706instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:06:59.954CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Morphotectonic characterization along the eastern portion of the main trace of Magallanes-Fagnano Fault System in Tierra del Fuego, Argentina
title Morphotectonic characterization along the eastern portion of the main trace of Magallanes-Fagnano Fault System in Tierra del Fuego, Argentina
spellingShingle Morphotectonic characterization along the eastern portion of the main trace of Magallanes-Fagnano Fault System in Tierra del Fuego, Argentina
Onorato, Maria Romina
MAGALLANES-FAGNANO
NEOTECTONICS
QUATERNARY
title_short Morphotectonic characterization along the eastern portion of the main trace of Magallanes-Fagnano Fault System in Tierra del Fuego, Argentina
title_full Morphotectonic characterization along the eastern portion of the main trace of Magallanes-Fagnano Fault System in Tierra del Fuego, Argentina
title_fullStr Morphotectonic characterization along the eastern portion of the main trace of Magallanes-Fagnano Fault System in Tierra del Fuego, Argentina
title_full_unstemmed Morphotectonic characterization along the eastern portion of the main trace of Magallanes-Fagnano Fault System in Tierra del Fuego, Argentina
title_sort Morphotectonic characterization along the eastern portion of the main trace of Magallanes-Fagnano Fault System in Tierra del Fuego, Argentina
dc.creator.none.fl_str_mv Onorato, Maria Romina
Perucca, Laura Patricia A.
Coronato, Andrea Maria Josefa
Prezzi, Claudia Beatriz
Blanc, Pablo Andrés
López, Ramiro
Magneres, Ignacio
author Onorato, Maria Romina
author_facet Onorato, Maria Romina
Perucca, Laura Patricia A.
Coronato, Andrea Maria Josefa
Prezzi, Claudia Beatriz
Blanc, Pablo Andrés
López, Ramiro
Magneres, Ignacio
author_role author
author2 Perucca, Laura Patricia A.
Coronato, Andrea Maria Josefa
Prezzi, Claudia Beatriz
Blanc, Pablo Andrés
López, Ramiro
Magneres, Ignacio
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv MAGALLANES-FAGNANO
NEOTECTONICS
QUATERNARY
topic MAGALLANES-FAGNANO
NEOTECTONICS
QUATERNARY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Magallanes-Fagnano Fault System (MFFS) constitutes the onshore segment of the transform boundary between the Scotia and South American plates. The objective of this study is to provide a characterization of the portion of the MFFS, extending from the eastern shore of the Fagnano Lake to the Atlantic coast of Argentina, from a geometric and morphotectonic approach. Detailed morphotectonic analyses of satellite images, plane recognition, digital topographic data, and field surveys allowed us to identify thirteen discrete fault sections. These sections were differentiated according to the morphological characteristics of scarps, natural exposures and other associated morphotectonic features. The main trace fault shows opposite north- and south-facing scarps alternating along strikes being descriptively characterized by their scarps, linear rivers and valleys, drainage anomalies (e.g. diverted, deflected or offset streams), behead meanders, wind gaps, sag ponds, pull-apart basins and linear ridges, among others features. The natural exposures of glacio-fluvial sand and gravel outcrops show Quaternary vertical and strike-slip deformation. It looks unlikely that the Magallanes-Fagnano Fault System (MFFS) could rupture along the entire ∼600 km length during an earthquake. Our results show that even large strike-slip faults may be divided into several discrete fault sections with distinctive morphotectonic features that could help to an increasing understanding of MFFS as a seismogenic source. In this way we suggest different fault sections as a contribution to the recognition of potential individual surface ruptures, which should be tested with further detailed data.
Fil: Onorato, Maria Romina. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Geología "Dr. Emiliano Aparicio"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Perucca, Laura Patricia A.. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Geología "Dr. Emiliano Aparicio"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Coronato, Andrea Maria Josefa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego, Antártida e Islas del Atlántico Sur. Instituto de Ciencias Polares, Ambientales y Recursos Naturales; Argentina
Fil: Prezzi, Claudia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Blanc, Pablo Andrés. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Geología "Dr. Emiliano Aparicio"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: López, Ramiro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Magneres, Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
description The Magallanes-Fagnano Fault System (MFFS) constitutes the onshore segment of the transform boundary between the Scotia and South American plates. The objective of this study is to provide a characterization of the portion of the MFFS, extending from the eastern shore of the Fagnano Lake to the Atlantic coast of Argentina, from a geometric and morphotectonic approach. Detailed morphotectonic analyses of satellite images, plane recognition, digital topographic data, and field surveys allowed us to identify thirteen discrete fault sections. These sections were differentiated according to the morphological characteristics of scarps, natural exposures and other associated morphotectonic features. The main trace fault shows opposite north- and south-facing scarps alternating along strikes being descriptively characterized by their scarps, linear rivers and valleys, drainage anomalies (e.g. diverted, deflected or offset streams), behead meanders, wind gaps, sag ponds, pull-apart basins and linear ridges, among others features. The natural exposures of glacio-fluvial sand and gravel outcrops show Quaternary vertical and strike-slip deformation. It looks unlikely that the Magallanes-Fagnano Fault System (MFFS) could rupture along the entire ∼600 km length during an earthquake. Our results show that even large strike-slip faults may be divided into several discrete fault sections with distinctive morphotectonic features that could help to an increasing understanding of MFFS as a seismogenic source. In this way we suggest different fault sections as a contribution to the recognition of potential individual surface ruptures, which should be tested with further detailed data.
publishDate 2021
dc.date.none.fl_str_mv 2021-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/175706
Onorato, Maria Romina; Perucca, Laura Patricia A.; Coronato, Andrea Maria Josefa; Prezzi, Claudia Beatriz; Blanc, Pablo Andrés; et al.; Morphotectonic characterization along the eastern portion of the main trace of Magallanes-Fagnano Fault System in Tierra del Fuego, Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 112; 12-2021; 1-32
0895-9811
CONICET Digital
CONICET
url http://hdl.handle.net/11336/175706
identifier_str_mv Onorato, Maria Romina; Perucca, Laura Patricia A.; Coronato, Andrea Maria Josefa; Prezzi, Claudia Beatriz; Blanc, Pablo Andrés; et al.; Morphotectonic characterization along the eastern portion of the main trace of Magallanes-Fagnano Fault System in Tierra del Fuego, Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 112; 12-2021; 1-32
0895-9811
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0895981121003965
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2021.103550
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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