The basement of the Deseado Massif at Bahı́a Laura, Patagonia, Argentina: a proposal for its evolution

Autores
Guido, Diego Martin; Escayola, Monica Patricia; Schalamuk, Bernardo Isidoro
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Rı́o Deseado Complex, the basement of the eastern Deseado Massif geological province of Argentina, is composed of five dispersed, small outcrops of upper Proterozoic–lower Paleozoic metamorphic and igneous rocks. We propose a possible evolution for these rocks on the basis of a detailed study of the easternmost outcrop (Bahı́a Laura). The Bahı́a Laura metamorphic rocks are metasedimentary and igneous-derived rocks formed prior to the Pampean metamorphic event. Metasedimentary schists, garnet-rich and micaceous gneisses, and the migmatite's paleosome are interpreted as marine sediments (pelites, sandstones, and limestones). The igneous-derived rocks are metaluminous and peraluminous granodiorites (hornblendic and granodioritic gneisses) and tholeiitic basalts (amphibolites) that were produced in a magmatic arc and a primitive island arc, respectively. These rocks underwent regional metamorphism during the Pampean cycle (Neoproterozoic–Paleozoic boundary), then a plutonic intrusion (Bahı́a Laura peraluminous monzogranite) and several granitoid injections,both of which are correlated with the Famatinian (Ordovician–Silurian) magmatic arc proposed for this region. Finally, all rocks were slightly deformed by a post-Famatinian tectonic event that may have produced the basement exhumation. According to the proposed evolution of the Rı́o Deseado Complex in Bahı́a Laura, the basement of the Deseado Massif could be part of a Late Proterozoic-Mid Paleozoic orogenic belt.
Fil: Guido, Diego Martin. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Recursos Minerales. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto de Recursos Minerales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Escayola, Monica Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Instituto Geonorte; Argentina
Fil: Schalamuk, Bernardo Isidoro. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Recursos Minerales. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto de Recursos Minerales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
BAHÍA LAURA
BASEMENT
DESEADO MASSIF
RO DESEADO COMPLEX
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:11336/95105
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/95105
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The basement of the Deseado Massif at Bahı́a Laura, Patagonia, Argentina: a proposal for its evolutionGuido, Diego MartinEscayola, Monica PatriciaSchalamuk, Bernardo IsidoroBAHÍA LAURABASEMENTDESEADO MASSIFRO DESEADO COMPLEXhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Rı́o Deseado Complex, the basement of the eastern Deseado Massif geological province of Argentina, is composed of five dispersed, small outcrops of upper Proterozoic–lower Paleozoic metamorphic and igneous rocks. We propose a possible evolution for these rocks on the basis of a detailed study of the easternmost outcrop (Bahı́a Laura). The Bahı́a Laura metamorphic rocks are metasedimentary and igneous-derived rocks formed prior to the Pampean metamorphic event. Metasedimentary schists, garnet-rich and micaceous gneisses, and the migmatite's paleosome are interpreted as marine sediments (pelites, sandstones, and limestones). The igneous-derived rocks are metaluminous and peraluminous granodiorites (hornblendic and granodioritic gneisses) and tholeiitic basalts (amphibolites) that were produced in a magmatic arc and a primitive island arc, respectively. These rocks underwent regional metamorphism during the Pampean cycle (Neoproterozoic–Paleozoic boundary), then a plutonic intrusion (Bahı́a Laura peraluminous monzogranite) and several granitoid injections,both of which are correlated with the Famatinian (Ordovician–Silurian) magmatic arc proposed for this region. Finally, all rocks were slightly deformed by a post-Famatinian tectonic event that may have produced the basement exhumation. According to the proposed evolution of the Rı́o Deseado Complex in Bahı́a Laura, the basement of the Deseado Massif could be part of a Late Proterozoic-Mid Paleozoic orogenic belt.Fil: Guido, Diego Martin. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Recursos Minerales. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto de Recursos Minerales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Escayola, Monica Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Instituto Geonorte; ArgentinaFil: Schalamuk, Bernardo Isidoro. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Recursos Minerales. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto de Recursos Minerales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaPergamon-Elsevier Science Ltd2004-04info: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/11336/95105Guido, Diego Martin; Escayola, Monica Patricia; Schalamuk, Bernardo Isidoro; The basement of the Deseado Massif at Bahı́a Laura, Patagonia, Argentina: a proposal for its evolution; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 16; 7; 4-2004; 567-5770895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981103001524info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2003.10.003info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:09:18Zoai:ri.conicet.gov.ar:11336/95105instacron: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:34982025-10-15 15:09:18.57CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The basement of the Deseado Massif at Bahı́a Laura, Patagonia, Argentina: a proposal for its evolution
title The basement of the Deseado Massif at Bahı́a Laura, Patagonia, Argentina: a proposal for its evolution
spellingShingle The basement of the Deseado Massif at Bahı́a Laura, Patagonia, Argentina: a proposal for its evolution
Guido, Diego Martin
BAHÍA LAURA
BASEMENT
DESEADO MASSIF
RO DESEADO COMPLEX
title_short The basement of the Deseado Massif at Bahı́a Laura, Patagonia, Argentina: a proposal for its evolution
title_full The basement of the Deseado Massif at Bahı́a Laura, Patagonia, Argentina: a proposal for its evolution
title_fullStr The basement of the Deseado Massif at Bahı́a Laura, Patagonia, Argentina: a proposal for its evolution
title_full_unstemmed The basement of the Deseado Massif at Bahı́a Laura, Patagonia, Argentina: a proposal for its evolution
title_sort The basement of the Deseado Massif at Bahı́a Laura, Patagonia, Argentina: a proposal for its evolution
dc.creator.none.fl_str_mv Guido, Diego Martin
Escayola, Monica Patricia
Schalamuk, Bernardo Isidoro
author Guido, Diego Martin
author_facet Guido, Diego Martin
Escayola, Monica Patricia
Schalamuk, Bernardo Isidoro
author_role author
author2 Escayola, Monica Patricia
Schalamuk, Bernardo Isidoro
author2_role author
author
dc.subject.none.fl_str_mv BAHÍA LAURA
BASEMENT
DESEADO MASSIF
RO DESEADO COMPLEX
topic BAHÍA LAURA
BASEMENT
DESEADO MASSIF
RO DESEADO COMPLEX
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 Rı́o Deseado Complex, the basement of the eastern Deseado Massif geological province of Argentina, is composed of five dispersed, small outcrops of upper Proterozoic–lower Paleozoic metamorphic and igneous rocks. We propose a possible evolution for these rocks on the basis of a detailed study of the easternmost outcrop (Bahı́a Laura). The Bahı́a Laura metamorphic rocks are metasedimentary and igneous-derived rocks formed prior to the Pampean metamorphic event. Metasedimentary schists, garnet-rich and micaceous gneisses, and the migmatite's paleosome are interpreted as marine sediments (pelites, sandstones, and limestones). The igneous-derived rocks are metaluminous and peraluminous granodiorites (hornblendic and granodioritic gneisses) and tholeiitic basalts (amphibolites) that were produced in a magmatic arc and a primitive island arc, respectively. These rocks underwent regional metamorphism during the Pampean cycle (Neoproterozoic–Paleozoic boundary), then a plutonic intrusion (Bahı́a Laura peraluminous monzogranite) and several granitoid injections,both of which are correlated with the Famatinian (Ordovician–Silurian) magmatic arc proposed for this region. Finally, all rocks were slightly deformed by a post-Famatinian tectonic event that may have produced the basement exhumation. According to the proposed evolution of the Rı́o Deseado Complex in Bahı́a Laura, the basement of the Deseado Massif could be part of a Late Proterozoic-Mid Paleozoic orogenic belt.
Fil: Guido, Diego Martin. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Recursos Minerales. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto de Recursos Minerales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Escayola, Monica Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Instituto Geonorte; Argentina
Fil: Schalamuk, Bernardo Isidoro. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Recursos Minerales. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto de Recursos Minerales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description The Rı́o Deseado Complex, the basement of the eastern Deseado Massif geological province of Argentina, is composed of five dispersed, small outcrops of upper Proterozoic–lower Paleozoic metamorphic and igneous rocks. We propose a possible evolution for these rocks on the basis of a detailed study of the easternmost outcrop (Bahı́a Laura). The Bahı́a Laura metamorphic rocks are metasedimentary and igneous-derived rocks formed prior to the Pampean metamorphic event. Metasedimentary schists, garnet-rich and micaceous gneisses, and the migmatite's paleosome are interpreted as marine sediments (pelites, sandstones, and limestones). The igneous-derived rocks are metaluminous and peraluminous granodiorites (hornblendic and granodioritic gneisses) and tholeiitic basalts (amphibolites) that were produced in a magmatic arc and a primitive island arc, respectively. These rocks underwent regional metamorphism during the Pampean cycle (Neoproterozoic–Paleozoic boundary), then a plutonic intrusion (Bahı́a Laura peraluminous monzogranite) and several granitoid injections,both of which are correlated with the Famatinian (Ordovician–Silurian) magmatic arc proposed for this region. Finally, all rocks were slightly deformed by a post-Famatinian tectonic event that may have produced the basement exhumation. According to the proposed evolution of the Rı́o Deseado Complex in Bahı́a Laura, the basement of the Deseado Massif could be part of a Late Proterozoic-Mid Paleozoic orogenic belt.
publishDate 2004
dc.date.none.fl_str_mv 2004-04
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/11336/95105
Guido, Diego Martin; Escayola, Monica Patricia; Schalamuk, Bernardo Isidoro; The basement of the Deseado Massif at Bahı́a Laura, Patagonia, Argentina: a proposal for its evolution; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 16; 7; 4-2004; 567-577
0895-9811
CONICET Digital
CONICET
url http://hdl.handle.net/11336/95105
identifier_str_mv Guido, Diego Martin; Escayola, Monica Patricia; Schalamuk, Bernardo Isidoro; The basement of the Deseado Massif at Bahı́a Laura, Patagonia, Argentina: a proposal for its evolution; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 16; 7; 4-2004; 567-577
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://www.sciencedirect.com/science/article/pii/S0895981103001524
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2003.10.003
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 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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