New assessment of basement units in the fitz roy area: implications for an early mesozoic tectono-metamorphic event at southern patagonia

Autores
Suárez, Rodrigo Javier; Ghiglione, Matias; Sue, Christian; Roy, Sandrine
Año de publicación
2018
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Among the complex collage of metamorphic belts exposed in the Patagonian Andes, the Triassic metamorphic rocks are poorlyrepresented. They only outcrop at the southern Chilean coast within the Chonos Metamorphic Complex (CMC), a subductioncomplex (Hervé et al. 2008), which witness of an active subduction during the Late Triassic (Hervé and Fanning 2001). Recently,U-Pb dating in detrital zircons performed in metasedimentary rocks from the Nunatak Viedma, which crops out west of the Fitz Royarea, within the Southern Patagonian Ice Field, revealed grain-ages youngest at Late Triassic (Suárez et al. 2018). We proposedto define the Nunatak Viedma Unit (NVU) in the Southern Patagonian Andes (SPA; Suárez et al. 2018) on the basis of these newobservations. The rocks of the NVU exhibit a main phase of ductile to brittle-ductile deformation tentatively correlated with theLate Triassic-Early Jurassic Chonide deformation event (Suárez et al. 2018) identified in the southern Chilean coast (Thomson andHervé 2002; Hervé et al. 2008). However, the age of the NVU?s tectono-metamorphic event, as well as its tectonic significance, arestill unknown. New geological mapping carried out in the Fitz Roy region (Fig. 1) reveals that outcrops previously mapped either asBahía de la Lancha Formation (BLF) or as volcanic rocks of the El Quemado Complex, shows lithological and structural similaritieswith the rocks of the NVU (Fig. 1). The preliminary structural results presented in this contribution aim to better constrain thedeformation phase of the NVU and to discuss its age and tectonic significance.
Fil: Suárez, Rodrigo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Ghiglione, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Sue, Christian. Universite de Franche-Comte; Francia
Fil: Roy, Sandrine. Université de Savoie Mont-Blanc; Francia
XV Congreso Geológico Chileno
Concepción
Chile
Universidad de Concepción
Colegio de Geólogos de Chile
Sociedad Geológica de Chile
Materia
Southern Patagonian Andes
Nunatak Viedma Unit
Orogenesis
Chonide event
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:11336/193878
Acceder
id CONICETDig_c087376d59258727baa48f28df34ffd8
oai_identifier_str oai:ri.conicet.gov.ar:11336/193878
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling New assessment of basement units in the fitz roy area: implications for an early mesozoic tectono-metamorphic event at southern patagoniaSuárez, Rodrigo JavierGhiglione, MatiasSue, ChristianRoy, SandrineSouthern Patagonian AndesNunatak Viedma UnitOrogenesisChonide eventhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Among the complex collage of metamorphic belts exposed in the Patagonian Andes, the Triassic metamorphic rocks are poorlyrepresented. They only outcrop at the southern Chilean coast within the Chonos Metamorphic Complex (CMC), a subductioncomplex (Hervé et al. 2008), which witness of an active subduction during the Late Triassic (Hervé and Fanning 2001). Recently,U-Pb dating in detrital zircons performed in metasedimentary rocks from the Nunatak Viedma, which crops out west of the Fitz Royarea, within the Southern Patagonian Ice Field, revealed grain-ages youngest at Late Triassic (Suárez et al. 2018). We proposedto define the Nunatak Viedma Unit (NVU) in the Southern Patagonian Andes (SPA; Suárez et al. 2018) on the basis of these newobservations. The rocks of the NVU exhibit a main phase of ductile to brittle-ductile deformation tentatively correlated with theLate Triassic-Early Jurassic Chonide deformation event (Suárez et al. 2018) identified in the southern Chilean coast (Thomson andHervé 2002; Hervé et al. 2008). However, the age of the NVU?s tectono-metamorphic event, as well as its tectonic significance, arestill unknown. New geological mapping carried out in the Fitz Roy region (Fig. 1) reveals that outcrops previously mapped either asBahía de la Lancha Formation (BLF) or as volcanic rocks of the El Quemado Complex, shows lithological and structural similaritieswith the rocks of the NVU (Fig. 1). The preliminary structural results presented in this contribution aim to better constrain thedeformation phase of the NVU and to discuss its age and tectonic significance.Fil: Suárez, Rodrigo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Ghiglione, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Sue, Christian. Universite de Franche-Comte; FranciaFil: Roy, Sandrine. Université de Savoie Mont-Blanc; FranciaXV Congreso Geológico ChilenoConcepciónChileUniversidad de ConcepciónColegio de Geólogos de ChileSociedad Geológica de ChileUniversidad de Concepción2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/193878New assessment of basement units in the fitz roy area: implications for an early mesozoic tectono-metamorphic event at southern patagonia; XV Congreso Geológico Chileno; Concepción; Chile; 2018; 1-4CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://congresogeologicochileno.cl/wp-content/uploads/2018/12/Libro-de-Actas-XVCongresoGeologicoChileno2018-2.pdfInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:23:45Zoai:ri.conicet.gov.ar:11336/193878instacron: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:34982025-09-29 10:23:46.189CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv New assessment of basement units in the fitz roy area: implications for an early mesozoic tectono-metamorphic event at southern patagonia
title New assessment of basement units in the fitz roy area: implications for an early mesozoic tectono-metamorphic event at southern patagonia
spellingShingle New assessment of basement units in the fitz roy area: implications for an early mesozoic tectono-metamorphic event at southern patagonia
Suárez, Rodrigo Javier
Southern Patagonian Andes
Nunatak Viedma Unit
Orogenesis
Chonide event
title_short New assessment of basement units in the fitz roy area: implications for an early mesozoic tectono-metamorphic event at southern patagonia
title_full New assessment of basement units in the fitz roy area: implications for an early mesozoic tectono-metamorphic event at southern patagonia
title_fullStr New assessment of basement units in the fitz roy area: implications for an early mesozoic tectono-metamorphic event at southern patagonia
title_full_unstemmed New assessment of basement units in the fitz roy area: implications for an early mesozoic tectono-metamorphic event at southern patagonia
title_sort New assessment of basement units in the fitz roy area: implications for an early mesozoic tectono-metamorphic event at southern patagonia
dc.creator.none.fl_str_mv Suárez, Rodrigo Javier
Ghiglione, Matias
Sue, Christian
Roy, Sandrine
author Suárez, Rodrigo Javier
author_facet Suárez, Rodrigo Javier
Ghiglione, Matias
Sue, Christian
Roy, Sandrine
author_role author
author2 Ghiglione, Matias
Sue, Christian
Roy, Sandrine
author2_role author
author
author
dc.subject.none.fl_str_mv Southern Patagonian Andes
Nunatak Viedma Unit
Orogenesis
Chonide event
topic Southern Patagonian Andes
Nunatak Viedma Unit
Orogenesis
Chonide event
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Among the complex collage of metamorphic belts exposed in the Patagonian Andes, the Triassic metamorphic rocks are poorlyrepresented. They only outcrop at the southern Chilean coast within the Chonos Metamorphic Complex (CMC), a subductioncomplex (Hervé et al. 2008), which witness of an active subduction during the Late Triassic (Hervé and Fanning 2001). Recently,U-Pb dating in detrital zircons performed in metasedimentary rocks from the Nunatak Viedma, which crops out west of the Fitz Royarea, within the Southern Patagonian Ice Field, revealed grain-ages youngest at Late Triassic (Suárez et al. 2018). We proposedto define the Nunatak Viedma Unit (NVU) in the Southern Patagonian Andes (SPA; Suárez et al. 2018) on the basis of these newobservations. The rocks of the NVU exhibit a main phase of ductile to brittle-ductile deformation tentatively correlated with theLate Triassic-Early Jurassic Chonide deformation event (Suárez et al. 2018) identified in the southern Chilean coast (Thomson andHervé 2002; Hervé et al. 2008). However, the age of the NVU?s tectono-metamorphic event, as well as its tectonic significance, arestill unknown. New geological mapping carried out in the Fitz Roy region (Fig. 1) reveals that outcrops previously mapped either asBahía de la Lancha Formation (BLF) or as volcanic rocks of the El Quemado Complex, shows lithological and structural similaritieswith the rocks of the NVU (Fig. 1). The preliminary structural results presented in this contribution aim to better constrain thedeformation phase of the NVU and to discuss its age and tectonic significance.
Fil: Suárez, Rodrigo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Ghiglione, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Sue, Christian. Universite de Franche-Comte; Francia
Fil: Roy, Sandrine. Université de Savoie Mont-Blanc; Francia
XV Congreso Geológico Chileno
Concepción
Chile
Universidad de Concepción
Colegio de Geólogos de Chile
Sociedad Geológica de Chile
description Among the complex collage of metamorphic belts exposed in the Patagonian Andes, the Triassic metamorphic rocks are poorlyrepresented. They only outcrop at the southern Chilean coast within the Chonos Metamorphic Complex (CMC), a subductioncomplex (Hervé et al. 2008), which witness of an active subduction during the Late Triassic (Hervé and Fanning 2001). Recently,U-Pb dating in detrital zircons performed in metasedimentary rocks from the Nunatak Viedma, which crops out west of the Fitz Royarea, within the Southern Patagonian Ice Field, revealed grain-ages youngest at Late Triassic (Suárez et al. 2018). We proposedto define the Nunatak Viedma Unit (NVU) in the Southern Patagonian Andes (SPA; Suárez et al. 2018) on the basis of these newobservations. The rocks of the NVU exhibit a main phase of ductile to brittle-ductile deformation tentatively correlated with theLate Triassic-Early Jurassic Chonide deformation event (Suárez et al. 2018) identified in the southern Chilean coast (Thomson andHervé 2002; Hervé et al. 2008). However, the age of the NVU?s tectono-metamorphic event, as well as its tectonic significance, arestill unknown. New geological mapping carried out in the Fitz Roy region (Fig. 1) reveals that outcrops previously mapped either asBahía de la Lancha Formation (BLF) or as volcanic rocks of the El Quemado Complex, shows lithological and structural similaritieswith the rocks of the NVU (Fig. 1). The preliminary structural results presented in this contribution aim to better constrain thedeformation phase of the NVU and to discuss its age and tectonic significance.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/193878
New assessment of basement units in the fitz roy area: implications for an early mesozoic tectono-metamorphic event at southern patagonia; XV Congreso Geológico Chileno; Concepción; Chile; 2018; 1-4
CONICET Digital
CONICET
url http://hdl.handle.net/11336/193878
identifier_str_mv New assessment of basement units in the fitz roy area: implications for an early mesozoic tectono-metamorphic event at southern patagonia; XV Congreso Geológico Chileno; Concepción; Chile; 2018; 1-4
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://congresogeologicochileno.cl/wp-content/uploads/2018/12/Libro-de-Actas-XVCongresoGeologicoChileno2018-2.pdf
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
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Universidad de Concepción
publisher.none.fl_str_mv Universidad de Concepción
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
_version_ 1844614233197641728
score 13.070432

Publicaciones similares