Sub-recent volcanism in Northern Patagonia: A tectonomagmatic approach

Autores
Massaferro, Gabriela Isabel; Haller, Miguel Jorge F.; D'orazio, Massimo; Alric, Viviana Ines
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Crater Basalt Volcanic Field (CBVF) in northern Patagonia (∼42°S, Chubut province) is located 400 km eastward of the current Peru–Chile Trench and to the southwest of the Meseta de Somuncura, in a back-arc position in the extra-Andean Patagonia. The CBVF lava flows cover glaciation related terraces and present stream valleys. The occurrence of CBVF is related with the Gastre Fault System (GFS), a very significant tectonic feature about 40 km wide. The CBVF volcanics cover a surface of ∼700 km2 , occurring mainly as lava flows and scoria cones. CBVF volcanics have relatively high contents of MgO (6–9 wt.%), Cr (136–289 ppm) and Ni (25–198 ppm), and classify as alkali basalts, basanites and trachybasalts. Geothermometry indicates a crystallization temperature of ∼1140 °C and a ƒO2 of −1.0 1 to 0.0 (log FMQ units). The petrographic and geochemical characteristics of CBVF products suggest that the magma originated from a garnet-bearing lherzolite mantle source with asthenospheric characteristics, as a result of decompression, partial melting and ascent. These melts would have risen through a system of deep faults like the Gastre Fault System, following the last Quaternary glacial event.
Fil: Massaferro, Gabriela Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Haller, Miguel Jorge F.. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: D'orazio, Massimo. Universitá di Pisa. Dipartamento de Scienze della Terra; Italia
Fil: Alric, Viviana Ines. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Materia
BASALTS
VOLCANISM
PATAGONIA
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:11336/103477
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Sub-recent volcanism in Northern Patagonia: A tectonomagmatic approachMassaferro, Gabriela IsabelHaller, Miguel Jorge F.D'orazio, MassimoAlric, Viviana InesBASALTSVOLCANISMPATAGONIAQUATERNARYhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Crater Basalt Volcanic Field (CBVF) in northern Patagonia (∼42°S, Chubut province) is located 400 km eastward of the current Peru–Chile Trench and to the southwest of the Meseta de Somuncura, in a back-arc position in the extra-Andean Patagonia. The CBVF lava flows cover glaciation related terraces and present stream valleys. The occurrence of CBVF is related with the Gastre Fault System (GFS), a very significant tectonic feature about 40 km wide. The CBVF volcanics cover a surface of ∼700 km2 , occurring mainly as lava flows and scoria cones. CBVF volcanics have relatively high contents of MgO (6–9 wt.%), Cr (136–289 ppm) and Ni (25–198 ppm), and classify as alkali basalts, basanites and trachybasalts. Geothermometry indicates a crystallization temperature of ∼1140 °C and a ƒO2 of −1.0 1 to 0.0 (log FMQ units). The petrographic and geochemical characteristics of CBVF products suggest that the magma originated from a garnet-bearing lherzolite mantle source with asthenospheric characteristics, as a result of decompression, partial melting and ascent. These melts would have risen through a system of deep faults like the Gastre Fault System, following the last Quaternary glacial event.Fil: Massaferro, Gabriela Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Haller, Miguel Jorge F.. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: D'orazio, Massimo. Universitá di Pisa. Dipartamento de Scienze della Terra; ItaliaFil: Alric, Viviana Ines. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaElsevier Science2006-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/103477Massaferro, Gabriela Isabel; Haller, Miguel Jorge F.; D'orazio, Massimo; Alric, Viviana Ines; Sub-recent volcanism in Northern Patagonia: A tectonomagmatic approach; Elsevier Science; Journal of Volcanology and Geothermal Research; 155; 3-4; 7-2006; 227-2430377-0273CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jvolgeores.2006.02.002info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0377027306000539info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:59:15Zoai:ri.conicet.gov.ar:11336/103477instacron: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 09:59:15.467CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Sub-recent volcanism in Northern Patagonia: A tectonomagmatic approach
title Sub-recent volcanism in Northern Patagonia: A tectonomagmatic approach
spellingShingle Sub-recent volcanism in Northern Patagonia: A tectonomagmatic approach
Massaferro, Gabriela Isabel
BASALTS
VOLCANISM
PATAGONIA
QUATERNARY
title_short Sub-recent volcanism in Northern Patagonia: A tectonomagmatic approach
title_full Sub-recent volcanism in Northern Patagonia: A tectonomagmatic approach
title_fullStr Sub-recent volcanism in Northern Patagonia: A tectonomagmatic approach
title_full_unstemmed Sub-recent volcanism in Northern Patagonia: A tectonomagmatic approach
title_sort Sub-recent volcanism in Northern Patagonia: A tectonomagmatic approach
dc.creator.none.fl_str_mv Massaferro, Gabriela Isabel
Haller, Miguel Jorge F.
D'orazio, Massimo
Alric, Viviana Ines
author Massaferro, Gabriela Isabel
author_facet Massaferro, Gabriela Isabel
Haller, Miguel Jorge F.
D'orazio, Massimo
Alric, Viviana Ines
author_role author
author2 Haller, Miguel Jorge F.
D'orazio, Massimo
Alric, Viviana Ines
author2_role author
author
author
dc.subject.none.fl_str_mv BASALTS
VOLCANISM
PATAGONIA
QUATERNARY
topic BASALTS
VOLCANISM
PATAGONIA
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 Crater Basalt Volcanic Field (CBVF) in northern Patagonia (∼42°S, Chubut province) is located 400 km eastward of the current Peru–Chile Trench and to the southwest of the Meseta de Somuncura, in a back-arc position in the extra-Andean Patagonia. The CBVF lava flows cover glaciation related terraces and present stream valleys. The occurrence of CBVF is related with the Gastre Fault System (GFS), a very significant tectonic feature about 40 km wide. The CBVF volcanics cover a surface of ∼700 km2 , occurring mainly as lava flows and scoria cones. CBVF volcanics have relatively high contents of MgO (6–9 wt.%), Cr (136–289 ppm) and Ni (25–198 ppm), and classify as alkali basalts, basanites and trachybasalts. Geothermometry indicates a crystallization temperature of ∼1140 °C and a ƒO2 of −1.0 1 to 0.0 (log FMQ units). The petrographic and geochemical characteristics of CBVF products suggest that the magma originated from a garnet-bearing lherzolite mantle source with asthenospheric characteristics, as a result of decompression, partial melting and ascent. These melts would have risen through a system of deep faults like the Gastre Fault System, following the last Quaternary glacial event.
Fil: Massaferro, Gabriela Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Haller, Miguel Jorge F.. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: D'orazio, Massimo. Universitá di Pisa. Dipartamento de Scienze della Terra; Italia
Fil: Alric, Viviana Ines. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
description The Crater Basalt Volcanic Field (CBVF) in northern Patagonia (∼42°S, Chubut province) is located 400 km eastward of the current Peru–Chile Trench and to the southwest of the Meseta de Somuncura, in a back-arc position in the extra-Andean Patagonia. The CBVF lava flows cover glaciation related terraces and present stream valleys. The occurrence of CBVF is related with the Gastre Fault System (GFS), a very significant tectonic feature about 40 km wide. The CBVF volcanics cover a surface of ∼700 km2 , occurring mainly as lava flows and scoria cones. CBVF volcanics have relatively high contents of MgO (6–9 wt.%), Cr (136–289 ppm) and Ni (25–198 ppm), and classify as alkali basalts, basanites and trachybasalts. Geothermometry indicates a crystallization temperature of ∼1140 °C and a ƒO2 of −1.0 1 to 0.0 (log FMQ units). The petrographic and geochemical characteristics of CBVF products suggest that the magma originated from a garnet-bearing lherzolite mantle source with asthenospheric characteristics, as a result of decompression, partial melting and ascent. These melts would have risen through a system of deep faults like the Gastre Fault System, following the last Quaternary glacial event.
publishDate 2006
dc.date.none.fl_str_mv 2006-07
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/11336/103477
Massaferro, Gabriela Isabel; Haller, Miguel Jorge F.; D'orazio, Massimo; Alric, Viviana Ines; Sub-recent volcanism in Northern Patagonia: A tectonomagmatic approach; Elsevier Science; Journal of Volcanology and Geothermal Research; 155; 3-4; 7-2006; 227-243
0377-0273
CONICET Digital
CONICET
url http://hdl.handle.net/11336/103477
identifier_str_mv Massaferro, Gabriela Isabel; Haller, Miguel Jorge F.; D'orazio, Massimo; Alric, Viviana Ines; Sub-recent volcanism in Northern Patagonia: A tectonomagmatic approach; Elsevier Science; Journal of Volcanology and Geothermal Research; 155; 3-4; 7-2006; 227-243
0377-0273
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jvolgeores.2006.02.002
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0377027306000539
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
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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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score 13.13397

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