Palaeomagnetism and 40Ar/39Ar dating from Lower Jurassic rocks in Gastre, central Patagonia: further data to explore tectonomagmatic events associated with the break-up of Gondwana

Se presenta estudio paleomagnético y edades 40Ar/39Ar sobre lavas de la Formación Lonco Trapial, Macizo Norpatagónico. Se discuten resultados en el marco de desmembramiento de Gondwana.

Detalles Bibliográficos
Autores: Zaffarana, Claudia Beatriz, Somoza, Ruben
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2012
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/68211
Acceso en línea:http://hdl.handle.net/11336/68211
Access Level:acceso abierto
Palabra clave:Patagonia
Gondwana
Jurásico
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
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network_name_str Argentina
repository_id_str
dc.title.none.fl_str_mv Palaeomagnetism and 40Ar/39Ar dating from Lower Jurassic rocks in Gastre, central Patagonia: further data to explore tectonomagmatic events associated with the break-up of Gondwana
title Palaeomagnetism and 40Ar/39Ar dating from Lower Jurassic rocks in Gastre, central Patagonia: further data to explore tectonomagmatic events associated with the break-up of Gondwana
spellingShingle Palaeomagnetism and 40Ar/39Ar dating from Lower Jurassic rocks in Gastre, central Patagonia: further data to explore tectonomagmatic events associated with the break-up of Gondwana
Zaffarana, Claudia Beatriz
Patagonia
Gondwana
Jurásico
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
title_short Palaeomagnetism and 40Ar/39Ar dating from Lower Jurassic rocks in Gastre, central Patagonia: further data to explore tectonomagmatic events associated with the break-up of Gondwana
title_full Palaeomagnetism and 40Ar/39Ar dating from Lower Jurassic rocks in Gastre, central Patagonia: further data to explore tectonomagmatic events associated with the break-up of Gondwana
title_fullStr Palaeomagnetism and 40Ar/39Ar dating from Lower Jurassic rocks in Gastre, central Patagonia: further data to explore tectonomagmatic events associated with the break-up of Gondwana
title_full_unstemmed Palaeomagnetism and 40Ar/39Ar dating from Lower Jurassic rocks in Gastre, central Patagonia: further data to explore tectonomagmatic events associated with the break-up of Gondwana
title_sort Palaeomagnetism and 40Ar/39Ar dating from Lower Jurassic rocks in Gastre, central Patagonia: further data to explore tectonomagmatic events associated with the break-up of Gondwana
dc.creator.none.fl_str_mv Zaffarana, Claudia Beatriz
Somoza, Ruben
author Zaffarana, Claudia Beatriz
author_facet Zaffarana, Claudia Beatriz
Somoza, Ruben
author_role author
author2 Somoza, Ruben
author2_role author
dc.subject.none.fl_str_mv Patagonia
Gondwana
Jurásico
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
topic Patagonia
Gondwana
Jurásico
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
description Se presenta estudio paleomagnético y edades 40Ar/39Ar sobre lavas de la Formación Lonco Trapial, Macizo Norpatagónico. Se discuten resultados en el marco de desmembramiento de Gondwana.
publishDate 2012
dc.date.none.fl_str_mv 2012-06
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/11336/68211
Zaffarana, Claudia Beatriz; Somoza, Ruben; Palaeomagnetism and 40Ar/39Ar dating from Lower Jurassic rocks in Gastre, central Patagonia: further data to explore tectonomagmatic events associated with the break-up of Gondwana; Geological Society Publications House; Journal of the Geological Society; 169; 4; 6-2012; 371-379
0016-7649
CONICET Digital
CONICET
url http://hdl.handle.net/11336/68211
identifier_str_mv Zaffarana, Claudia Beatriz; Somoza, Ruben; Palaeomagnetism and 40Ar/39Ar dating from Lower Jurassic rocks in Gastre, central Patagonia: further data to explore tectonomagmatic events associated with the break-up of Gondwana; Geological Society Publications House; Journal of the Geological Society; 169; 4; 6-2012; 371-379
0016-7649
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1144/0016-76492011-089
info:eu-repo/semantics/altIdentifier/url/http://mr.crossref.org/iPage?doi=10.1144%2F0016-76492011-089
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 Geological Society Publications House
publisher.none.fl_str_mv Geological Society Publications House
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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
_version_ 1799195416121573376
spelling Palaeomagnetism and 40Ar/39Ar dating from Lower Jurassic rocks in Gastre, central Patagonia: further data to explore tectonomagmatic events associated with the break-up of GondwanaZaffarana, Claudia BeatrizSomoza, RubenPatagoniaGondwanaJurásicohttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Se presenta estudio paleomagnético y edades 40Ar/39Ar sobre lavas de la Formación Lonco Trapial, Macizo Norpatagónico. Se discuten resultados en el marco de desmembramiento de Gondwana.New 40Ar/ 39Ar data indicate ages of c. 185 Ma for the Lonco Trapial volcanic field in Gastre, north-central Patagonia, implying that this andesitic unit is roughly coeval with the Marifil silicic province that crops out in the eastern part of northern Patagonia. These volcanic fields are therefore roughly coeval with the Karoo-Ferrar large igneous province, further contributing to the huge, 185-180 Ma magmatic outpouring in southern Gondwana. The comparison of palaeomagnetic results from the unit with Early Jurassic reference palaeopoles suggests that Gastre records a small, anticlockwise finite rotation with respect to stable South America. This contrasts sharply with the large clockwise rotation recorded by roughly coeval dolerites from the Falkland/Malvinas Islands, and argues against a direct relationship between the rotation of the islands and the tectonic activity in Gastre. The results support previous suggestions that the Gastre Fault System is not the locus of major strike-slip displacement activity in the Jurassic as some workers have suggested. Taken as a whole, palaeomagnetic data from Patagonia suggest a more complex than previously thought pattern of distributed and variable deformation during the early stages of Gondwana breakup. The crustal block boundaries in the region remain cryptic.Fil: Zaffarana, Claudia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; ArgentinaFil: Somoza, Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; ArgentinaGeological Society Publications House2012-06info: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/11336/68211Zaffarana, Claudia Beatriz; Somoza, Ruben; Palaeomagnetism and 40Ar/39Ar dating from Lower Jurassic rocks in Gastre, central Patagonia: further data to explore tectonomagmatic events associated with the break-up of Gondwana; Geological Society Publications House; Journal of the Geological Society; 169; 4; 6-2012; 371-3790016-7649CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1144/0016-76492011-089info:eu-repo/semantics/altIdentifier/url/http://mr.crossref.org/iPage?doi=10.1144%2F0016-76492011-089info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:51:50Zoai:ri.conicet.gov.ar:11336/68211instacron: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:34982024-05-08 13:51:50.335CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
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