Regional implications of U-Pb zircon ages from rhyolitic pebbles of Suncho Formation conglomerates, northern Sierras Pampeanas (NW Argentina)

Autores
Toselli, Alejandro Jose; Aceñolaza, Guillermo Federico; Stipp Basei, Miguel Angelo; Aceñolaza, Guillermo Federico; Rossi, Juana Norma; Mantzouka, Dimitra; Tsaparas, Nicolaos; Karakitsios, Vasileios
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Conglomerates are scarce in the Neoproterozoic/Cambrian strata of the South American Central Andean Basin. In NW Argentina, unusual conglomerates within meta-psammites of the Suncho Formation contain rhyolite clasts that yielded 524.9 ± 1.12 Ma and 525.1 ± 1.3 Ma LA-ICP-MS U-Pb zircon ages. These ages coincide with the reported youngest age populations obtained from detrital zircons in the host rocks. The new geochronological data, the regional geology and published data suggest that the source areas of these pebbles were located to the NE and E of the Suncho Formation, which may include some reworked older sedimentary levels of the Puncoviscana Formation. The origin of the Suncho conglomerate is linked to Pre-Tilcaric magmatism which closed the Pampean Cycle, whose ages are in the range 541-517 Ma. The match between the radiometric data and the age provided by the Oldhamia trace fossils with both sedimentary and magmatic events occurring during the Terreneuvian - Series 2 time span ("lower Cambrian") is here emphasized. Considering that the dated rhyolite clasts were derived from magmatic rocks, a Puncoviscana active margin can be proposed as their source, and an active margin setting is proposed for Puncoviscana in this part of the western margin of South America. The knowledge of unusual facies within the Neoproterozoic/Cambrian sequences in the South American Andes provides a better understanding of the geology of little known areas in the western protogondwanan margin.
Fil: Toselli, Alejandro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Aceñolaza, Guillermo Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Stipp Basei, Miguel Angelo. Universidade de Sao Paulo; Brasil
Fil: Aceñolaza, Guillermo Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Rossi, Juana Norma. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Mantzouka, Dimitra. Universidad Nacional y Kapodistriaca de Atenas; Grecia
Fil: Tsaparas, Nicolaos. Universidad Nacional y Kapodistriaca de Atenas; Grecia
Fil: Karakitsios, Vasileios. Universidad Nacional y Kapodistriaca de Atenas; Grecia
Materia
Cambrian Conglomerates
Nw Argentina
Provenance
Rhyolite Pebbles
Suncho Formation
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:11336/39807
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Regional implications of U-Pb zircon ages from rhyolitic pebbles of Suncho Formation conglomerates, northern Sierras Pampeanas (NW Argentina)Toselli, Alejandro JoseAceñolaza, Guillermo FedericoStipp Basei, Miguel AngeloAceñolaza, Guillermo FedericoRossi, Juana NormaMantzouka, DimitraTsaparas, NicolaosKarakitsios, VasileiosCambrian ConglomeratesNw ArgentinaProvenanceRhyolite PebblesSuncho Formationhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Conglomerates are scarce in the Neoproterozoic/Cambrian strata of the South American Central Andean Basin. In NW Argentina, unusual conglomerates within meta-psammites of the Suncho Formation contain rhyolite clasts that yielded 524.9 ± 1.12 Ma and 525.1 ± 1.3 Ma LA-ICP-MS U-Pb zircon ages. These ages coincide with the reported youngest age populations obtained from detrital zircons in the host rocks. The new geochronological data, the regional geology and published data suggest that the source areas of these pebbles were located to the NE and E of the Suncho Formation, which may include some reworked older sedimentary levels of the Puncoviscana Formation. The origin of the Suncho conglomerate is linked to Pre-Tilcaric magmatism which closed the Pampean Cycle, whose ages are in the range 541-517 Ma. The match between the radiometric data and the age provided by the Oldhamia trace fossils with both sedimentary and magmatic events occurring during the Terreneuvian - Series 2 time span ("lower Cambrian") is here emphasized. Considering that the dated rhyolite clasts were derived from magmatic rocks, a Puncoviscana active margin can be proposed as their source, and an active margin setting is proposed for Puncoviscana in this part of the western margin of South America. The knowledge of unusual facies within the Neoproterozoic/Cambrian sequences in the South American Andes provides a better understanding of the geology of little known areas in the western protogondwanan margin.Fil: Toselli, Alejandro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; ArgentinaFil: Aceñolaza, Guillermo Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; ArgentinaFil: Stipp Basei, Miguel Angelo. Universidade de Sao Paulo; BrasilFil: Aceñolaza, Guillermo Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; ArgentinaFil: Rossi, Juana Norma. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; ArgentinaFil: Mantzouka, Dimitra. Universidad Nacional y Kapodistriaca de Atenas; GreciaFil: Tsaparas, Nicolaos. Universidad Nacional y Kapodistriaca de Atenas; GreciaFil: Karakitsios, Vasileios. Universidad Nacional y Kapodistriaca de Atenas; GreciaE Schweizerbartsche Verlags2015-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/39807Toselli, Alejandro Jose; Aceñolaza, Guillermo Federico; Stipp Basei, Miguel Angelo; Aceñolaza, Guillermo Federico; Rossi, Juana Norma; et al.; Regional implications of U-Pb zircon ages from rhyolitic pebbles of Suncho Formation conglomerates, northern Sierras Pampeanas (NW Argentina); E Schweizerbartsche Verlags; Neues Jahrbuch für Geologie und Palaontologie-abhandlungen; 275; 1; 1-2015; 33-450077-7749CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1127/njgpa/2015/0447info:eu-repo/semantics/altIdentifier/url/http://www.ingentaconnect.com/content/schweiz/njbgeol/2015/00000275/00000001/art00004info:eu-repo/semantics/altIdentifier/url/https://ftp.schweizerbart.de/papers/njgpa/detail/275/84605/Regional_implications_of_U_Pb_zircon_ages_from_rhyolitic_pebbles_of_Suncho_Formation_conglomerates_northern_Sierras_Pampeanas_NW_Argentina?l=ENinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:38:03Zoai:ri.conicet.gov.ar:11336/39807instacron: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 14:38:03.759CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Regional implications of U-Pb zircon ages from rhyolitic pebbles of Suncho Formation conglomerates, northern Sierras Pampeanas (NW Argentina)
title Regional implications of U-Pb zircon ages from rhyolitic pebbles of Suncho Formation conglomerates, northern Sierras Pampeanas (NW Argentina)
spellingShingle Regional implications of U-Pb zircon ages from rhyolitic pebbles of Suncho Formation conglomerates, northern Sierras Pampeanas (NW Argentina)
Toselli, Alejandro Jose
Cambrian Conglomerates
Nw Argentina
Provenance
Rhyolite Pebbles
Suncho Formation
title_short Regional implications of U-Pb zircon ages from rhyolitic pebbles of Suncho Formation conglomerates, northern Sierras Pampeanas (NW Argentina)
title_full Regional implications of U-Pb zircon ages from rhyolitic pebbles of Suncho Formation conglomerates, northern Sierras Pampeanas (NW Argentina)
title_fullStr Regional implications of U-Pb zircon ages from rhyolitic pebbles of Suncho Formation conglomerates, northern Sierras Pampeanas (NW Argentina)
title_full_unstemmed Regional implications of U-Pb zircon ages from rhyolitic pebbles of Suncho Formation conglomerates, northern Sierras Pampeanas (NW Argentina)
title_sort Regional implications of U-Pb zircon ages from rhyolitic pebbles of Suncho Formation conglomerates, northern Sierras Pampeanas (NW Argentina)
dc.creator.none.fl_str_mv Toselli, Alejandro Jose
Aceñolaza, Guillermo Federico
Stipp Basei, Miguel Angelo
Aceñolaza, Guillermo Federico
Rossi, Juana Norma
Mantzouka, Dimitra
Tsaparas, Nicolaos
Karakitsios, Vasileios
author Toselli, Alejandro Jose
author_facet Toselli, Alejandro Jose
Aceñolaza, Guillermo Federico
Stipp Basei, Miguel Angelo
Rossi, Juana Norma
Mantzouka, Dimitra
Tsaparas, Nicolaos
Karakitsios, Vasileios
author_role author
author2 Aceñolaza, Guillermo Federico
Stipp Basei, Miguel Angelo
Rossi, Juana Norma
Mantzouka, Dimitra
Tsaparas, Nicolaos
Karakitsios, Vasileios
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Cambrian Conglomerates
Nw Argentina
Provenance
Rhyolite Pebbles
Suncho Formation
topic Cambrian Conglomerates
Nw Argentina
Provenance
Rhyolite Pebbles
Suncho Formation
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Conglomerates are scarce in the Neoproterozoic/Cambrian strata of the South American Central Andean Basin. In NW Argentina, unusual conglomerates within meta-psammites of the Suncho Formation contain rhyolite clasts that yielded 524.9 ± 1.12 Ma and 525.1 ± 1.3 Ma LA-ICP-MS U-Pb zircon ages. These ages coincide with the reported youngest age populations obtained from detrital zircons in the host rocks. The new geochronological data, the regional geology and published data suggest that the source areas of these pebbles were located to the NE and E of the Suncho Formation, which may include some reworked older sedimentary levels of the Puncoviscana Formation. The origin of the Suncho conglomerate is linked to Pre-Tilcaric magmatism which closed the Pampean Cycle, whose ages are in the range 541-517 Ma. The match between the radiometric data and the age provided by the Oldhamia trace fossils with both sedimentary and magmatic events occurring during the Terreneuvian - Series 2 time span ("lower Cambrian") is here emphasized. Considering that the dated rhyolite clasts were derived from magmatic rocks, a Puncoviscana active margin can be proposed as their source, and an active margin setting is proposed for Puncoviscana in this part of the western margin of South America. The knowledge of unusual facies within the Neoproterozoic/Cambrian sequences in the South American Andes provides a better understanding of the geology of little known areas in the western protogondwanan margin.
Fil: Toselli, Alejandro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Aceñolaza, Guillermo Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Stipp Basei, Miguel Angelo. Universidade de Sao Paulo; Brasil
Fil: Aceñolaza, Guillermo Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Rossi, Juana Norma. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Mantzouka, Dimitra. Universidad Nacional y Kapodistriaca de Atenas; Grecia
Fil: Tsaparas, Nicolaos. Universidad Nacional y Kapodistriaca de Atenas; Grecia
Fil: Karakitsios, Vasileios. Universidad Nacional y Kapodistriaca de Atenas; Grecia
description Conglomerates are scarce in the Neoproterozoic/Cambrian strata of the South American Central Andean Basin. In NW Argentina, unusual conglomerates within meta-psammites of the Suncho Formation contain rhyolite clasts that yielded 524.9 ± 1.12 Ma and 525.1 ± 1.3 Ma LA-ICP-MS U-Pb zircon ages. These ages coincide with the reported youngest age populations obtained from detrital zircons in the host rocks. The new geochronological data, the regional geology and published data suggest that the source areas of these pebbles were located to the NE and E of the Suncho Formation, which may include some reworked older sedimentary levels of the Puncoviscana Formation. The origin of the Suncho conglomerate is linked to Pre-Tilcaric magmatism which closed the Pampean Cycle, whose ages are in the range 541-517 Ma. The match between the radiometric data and the age provided by the Oldhamia trace fossils with both sedimentary and magmatic events occurring during the Terreneuvian - Series 2 time span ("lower Cambrian") is here emphasized. Considering that the dated rhyolite clasts were derived from magmatic rocks, a Puncoviscana active margin can be proposed as their source, and an active margin setting is proposed for Puncoviscana in this part of the western margin of South America. The knowledge of unusual facies within the Neoproterozoic/Cambrian sequences in the South American Andes provides a better understanding of the geology of little known areas in the western protogondwanan margin.
publishDate 2015
dc.date.none.fl_str_mv 2015-01
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/11336/39807
Toselli, Alejandro Jose; Aceñolaza, Guillermo Federico; Stipp Basei, Miguel Angelo; Aceñolaza, Guillermo Federico; Rossi, Juana Norma; et al.; Regional implications of U-Pb zircon ages from rhyolitic pebbles of Suncho Formation conglomerates, northern Sierras Pampeanas (NW Argentina); E Schweizerbartsche Verlags; Neues Jahrbuch für Geologie und Palaontologie-abhandlungen; 275; 1; 1-2015; 33-45
0077-7749
CONICET Digital
CONICET
url http://hdl.handle.net/11336/39807
identifier_str_mv Toselli, Alejandro Jose; Aceñolaza, Guillermo Federico; Stipp Basei, Miguel Angelo; Aceñolaza, Guillermo Federico; Rossi, Juana Norma; et al.; Regional implications of U-Pb zircon ages from rhyolitic pebbles of Suncho Formation conglomerates, northern Sierras Pampeanas (NW Argentina); E Schweizerbartsche Verlags; Neues Jahrbuch für Geologie und Palaontologie-abhandlungen; 275; 1; 1-2015; 33-45
0077-7749
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1127/njgpa/2015/0447
info:eu-repo/semantics/altIdentifier/url/http://www.ingentaconnect.com/content/schweiz/njbgeol/2015/00000275/00000001/art00004
info:eu-repo/semantics/altIdentifier/url/https://ftp.schweizerbart.de/papers/njgpa/detail/275/84605/Regional_implications_of_U_Pb_zircon_ages_from_rhyolitic_pebbles_of_Suncho_Formation_conglomerates_northern_Sierras_Pampeanas_NW_Argentina?l=EN
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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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.publisher.none.fl_str_mv E Schweizerbartsche Verlags
publisher.none.fl_str_mv E Schweizerbartsche Verlags
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
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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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