New insights on Lower Ordovician (Floian) reefs from the Argentine Precordillera: Biostratigraphic, sedimentologic and paleogeographic implications

Autores
Mestre García, Ana Isabel; Heredia, Susana Emma; Moreno Valdez, Florencia Belén; Benegas, Leandro; Morfil, Andres; Soria Pures, Tatiana Belen
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The shallow carbonate facies of the middle part from the San Juan Formation that outcrops in the Central Precordillera is studied in the present contribution in order to assess conodont biostratigraphy and sedimentology. Three facies and five microfacies were recognized in the Niquivil and Talacasto sections. These facies represent three genetically-related depositional facies from distal to proximal, and include from shallow subtidal facies below wave action to shoal and reef facies. This reef and shoal facies is recorded for the first time at the Talacasto section. The reef framework consists mainly of calcimicrobes in consortia with pulchrilaminids, calathids and lithistid sponges conforming a microbial-metazoan matrix-supported reef. The pulchrilaminid Zondarella communis Keller and Flügel, present in these reef facies, is here assigned for first time to the late Floian (Early Ordovician), Oepikodus intermedius conodont Zone. In this sense, the Precordilleran reefs represent the latest Floian record of pulchrilaminids compared to the worldwide records for these Early Ordovician reef-builder organisms. This provides crucial information for understanding the dispersal pathways of these organisms, and allows a paleogeographic reconstruction of the western margin of Gondwana in the Early Ordovician.
Fil: Mestre García, Ana Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Heredia, Susana Emma. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Moreno Valdez, Florencia Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Benegas, Leandro. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; Argentina
Fil: Morfil, Andres. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; Argentina
Fil: Soria Pures, Tatiana Belen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Materia
GONDWANA
OEPIKODUS INTERMEDIUS
SHOAL FACIES
ZONDARELLA
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:11336/153853

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network_name_str CONICET Digital (CONICET)
spelling New insights on Lower Ordovician (Floian) reefs from the Argentine Precordillera: Biostratigraphic, sedimentologic and paleogeographic implicationsMestre García, Ana IsabelHeredia, Susana EmmaMoreno Valdez, Florencia BelénBenegas, LeandroMorfil, AndresSoria Pures, Tatiana BelenGONDWANAOEPIKODUS INTERMEDIUSSHOAL FACIESZONDARELLAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The shallow carbonate facies of the middle part from the San Juan Formation that outcrops in the Central Precordillera is studied in the present contribution in order to assess conodont biostratigraphy and sedimentology. Three facies and five microfacies were recognized in the Niquivil and Talacasto sections. These facies represent three genetically-related depositional facies from distal to proximal, and include from shallow subtidal facies below wave action to shoal and reef facies. This reef and shoal facies is recorded for the first time at the Talacasto section. The reef framework consists mainly of calcimicrobes in consortia with pulchrilaminids, calathids and lithistid sponges conforming a microbial-metazoan matrix-supported reef. The pulchrilaminid Zondarella communis Keller and Flügel, present in these reef facies, is here assigned for first time to the late Floian (Early Ordovician), Oepikodus intermedius conodont Zone. In this sense, the Precordilleran reefs represent the latest Floian record of pulchrilaminids compared to the worldwide records for these Early Ordovician reef-builder organisms. This provides crucial information for understanding the dispersal pathways of these organisms, and allows a paleogeographic reconstruction of the western margin of Gondwana in the Early Ordovician.Fil: Mestre García, Ana Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Heredia, Susana Emma. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Moreno Valdez, Florencia Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Benegas, Leandro. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; ArgentinaFil: Morfil, Andres. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; ArgentinaFil: Soria Pures, Tatiana Belen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaPergamon-Elsevier Science Ltd2020-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/153853Mestre García, Ana Isabel; Heredia, Susana Emma; Moreno Valdez, Florencia Belén; Benegas, Leandro; Morfil, Andres; et al.; New insights on Lower Ordovician (Floian) reefs from the Argentine Precordillera: Biostratigraphic, sedimentologic and paleogeographic implications; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 103; 102801; 11-2020; 1-150895-98111873-0647CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981120303448info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2020.102801info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:34:13Zoai:ri.conicet.gov.ar:11336/153853instacron: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 09:34:14.178CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv New insights on Lower Ordovician (Floian) reefs from the Argentine Precordillera: Biostratigraphic, sedimentologic and paleogeographic implications
title New insights on Lower Ordovician (Floian) reefs from the Argentine Precordillera: Biostratigraphic, sedimentologic and paleogeographic implications
spellingShingle New insights on Lower Ordovician (Floian) reefs from the Argentine Precordillera: Biostratigraphic, sedimentologic and paleogeographic implications
Mestre García, Ana Isabel
GONDWANA
OEPIKODUS INTERMEDIUS
SHOAL FACIES
ZONDARELLA
title_short New insights on Lower Ordovician (Floian) reefs from the Argentine Precordillera: Biostratigraphic, sedimentologic and paleogeographic implications
title_full New insights on Lower Ordovician (Floian) reefs from the Argentine Precordillera: Biostratigraphic, sedimentologic and paleogeographic implications
title_fullStr New insights on Lower Ordovician (Floian) reefs from the Argentine Precordillera: Biostratigraphic, sedimentologic and paleogeographic implications
title_full_unstemmed New insights on Lower Ordovician (Floian) reefs from the Argentine Precordillera: Biostratigraphic, sedimentologic and paleogeographic implications
title_sort New insights on Lower Ordovician (Floian) reefs from the Argentine Precordillera: Biostratigraphic, sedimentologic and paleogeographic implications
dc.creator.none.fl_str_mv Mestre García, Ana Isabel
Heredia, Susana Emma
Moreno Valdez, Florencia Belén
Benegas, Leandro
Morfil, Andres
Soria Pures, Tatiana Belen
author Mestre García, Ana Isabel
author_facet Mestre García, Ana Isabel
Heredia, Susana Emma
Moreno Valdez, Florencia Belén
Benegas, Leandro
Morfil, Andres
Soria Pures, Tatiana Belen
author_role author
author2 Heredia, Susana Emma
Moreno Valdez, Florencia Belén
Benegas, Leandro
Morfil, Andres
Soria Pures, Tatiana Belen
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv GONDWANA
OEPIKODUS INTERMEDIUS
SHOAL FACIES
ZONDARELLA
topic GONDWANA
OEPIKODUS INTERMEDIUS
SHOAL FACIES
ZONDARELLA
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 shallow carbonate facies of the middle part from the San Juan Formation that outcrops in the Central Precordillera is studied in the present contribution in order to assess conodont biostratigraphy and sedimentology. Three facies and five microfacies were recognized in the Niquivil and Talacasto sections. These facies represent three genetically-related depositional facies from distal to proximal, and include from shallow subtidal facies below wave action to shoal and reef facies. This reef and shoal facies is recorded for the first time at the Talacasto section. The reef framework consists mainly of calcimicrobes in consortia with pulchrilaminids, calathids and lithistid sponges conforming a microbial-metazoan matrix-supported reef. The pulchrilaminid Zondarella communis Keller and Flügel, present in these reef facies, is here assigned for first time to the late Floian (Early Ordovician), Oepikodus intermedius conodont Zone. In this sense, the Precordilleran reefs represent the latest Floian record of pulchrilaminids compared to the worldwide records for these Early Ordovician reef-builder organisms. This provides crucial information for understanding the dispersal pathways of these organisms, and allows a paleogeographic reconstruction of the western margin of Gondwana in the Early Ordovician.
Fil: Mestre García, Ana Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Heredia, Susana Emma. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Moreno Valdez, Florencia Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Benegas, Leandro. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; Argentina
Fil: Morfil, Andres. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; Argentina
Fil: Soria Pures, Tatiana Belen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
description The shallow carbonate facies of the middle part from the San Juan Formation that outcrops in the Central Precordillera is studied in the present contribution in order to assess conodont biostratigraphy and sedimentology. Three facies and five microfacies were recognized in the Niquivil and Talacasto sections. These facies represent three genetically-related depositional facies from distal to proximal, and include from shallow subtidal facies below wave action to shoal and reef facies. This reef and shoal facies is recorded for the first time at the Talacasto section. The reef framework consists mainly of calcimicrobes in consortia with pulchrilaminids, calathids and lithistid sponges conforming a microbial-metazoan matrix-supported reef. The pulchrilaminid Zondarella communis Keller and Flügel, present in these reef facies, is here assigned for first time to the late Floian (Early Ordovician), Oepikodus intermedius conodont Zone. In this sense, the Precordilleran reefs represent the latest Floian record of pulchrilaminids compared to the worldwide records for these Early Ordovician reef-builder organisms. This provides crucial information for understanding the dispersal pathways of these organisms, and allows a paleogeographic reconstruction of the western margin of Gondwana in the Early Ordovician.
publishDate 2020
dc.date.none.fl_str_mv 2020-11
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/11336/153853
Mestre García, Ana Isabel; Heredia, Susana Emma; Moreno Valdez, Florencia Belén; Benegas, Leandro; Morfil, Andres; et al.; New insights on Lower Ordovician (Floian) reefs from the Argentine Precordillera: Biostratigraphic, sedimentologic and paleogeographic implications; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 103; 102801; 11-2020; 1-15
0895-9811
1873-0647
CONICET Digital
CONICET
url http://hdl.handle.net/11336/153853
identifier_str_mv Mestre García, Ana Isabel; Heredia, Susana Emma; Moreno Valdez, Florencia Belén; Benegas, Leandro; Morfil, Andres; et al.; New insights on Lower Ordovician (Floian) reefs from the Argentine Precordillera: Biostratigraphic, sedimentologic and paleogeographic implications; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 103; 102801; 11-2020; 1-15
0895-9811
1873-0647
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/S0895981120303448
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2020.102801
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.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)
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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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