Sedimentology and sequence stratigraphy from a mixed (carbonate-siliciclastic) rift to passive margin transition: The early to middle cambrian of the argentine precordillera

Autores
Gomez, Fernando Javier; Astini, Ricardo Alfredo
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Through the analysis of facies stacking patterns, geometries and bounding surfaces, sequence stratigraphy provides a framework to understand sedimentary facies distribution and evolution. Many published works contain noteworthy examples where a sequence stratigraphy approach was applied to Middle-Late Paleozoic, Mesozoic and Cenozoic sedimentary units. Early Paleozoic examples, however, remain relatively scarce. This article addresses the exceptionally well-exposed Early to Middle Cambrian La Laja Formation and equivalent units of the Argentine Precordillera carbonate bank. Given the stratigraphic and faunal similarities, the Precordillera is considered as a Laurentia-derived allochthonous terrane, which detached from the Laurentia margin during Early to Middle Cambrian and docked against western Gondwana margin by Mid-Ordovician time. This work focuses on the lowermost mixed carbonate-siliciclastic interval that records the early evolution of the Precordillera terrane, providing a link to better understand the paired Laurentia margin and Lower Paleozoic paleogeography. The study was built upon a detailed facies and microfacies analysis where thirteen facies associations were recognized, representing a spectrum of environments ranging from deep subtidal, shallow subtidal to inter-supratidal sabkha facies. Our analysis allowed the recognition of three sequences (S1, S2 and S3) separated by unconformities (D1, D2, D3 and D4). A reciprocal sedimentation model is suggested to explain coarse-grained siliciclastic intervals overlying and bypassing subtidal limestones in S1 and S2. However the fine-grained siliciclastic-rich carbonate intervals within S2 seem to represent transgressive deposits, probably influenced by higher accommodation and climatically driven siliciclastic influx. Lateral facies and thickness variations suggest that the La Laja Formation developed during the progressive margin stabilization with differential subsidence. The sequence boundary separating the La Laja Formation from the overlying Zonda Formation represents an important architectural change from differential subsidence during the late rift stage in the Early-Middle Cambrian La Laja Formation to the passive margin stage with flat-lying remarkably continuous rhythmic dolomites in the overlying Upper Cambrian Zonda Formation. Further strengthening the stratigraphic similarities with the Lower Paleozoic of Laurentia, a similar transition has also been suggested for coeval units of the Laurentia paired margin. This work highlights the importance that Precordillera stratigraphy is linked to the early evolution of the paired margins during the Iapetus Ocean opening and Lower Paleozoic paleogeography reconstructions.
Fil: Gomez, Fernando Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Astini, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Materia
Argentine Precordillera
Cambrian
Carbonate Platform
Sedimentology
Sequence Stratigraphy
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:11336/37813

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spelling Sedimentology and sequence stratigraphy from a mixed (carbonate-siliciclastic) rift to passive margin transition: The early to middle cambrian of the argentine precordilleraGomez, Fernando JavierAstini, Ricardo AlfredoArgentine PrecordilleraCambrianCarbonate PlatformSedimentologySequence Stratigraphyhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Through the analysis of facies stacking patterns, geometries and bounding surfaces, sequence stratigraphy provides a framework to understand sedimentary facies distribution and evolution. Many published works contain noteworthy examples where a sequence stratigraphy approach was applied to Middle-Late Paleozoic, Mesozoic and Cenozoic sedimentary units. Early Paleozoic examples, however, remain relatively scarce. This article addresses the exceptionally well-exposed Early to Middle Cambrian La Laja Formation and equivalent units of the Argentine Precordillera carbonate bank. Given the stratigraphic and faunal similarities, the Precordillera is considered as a Laurentia-derived allochthonous terrane, which detached from the Laurentia margin during Early to Middle Cambrian and docked against western Gondwana margin by Mid-Ordovician time. This work focuses on the lowermost mixed carbonate-siliciclastic interval that records the early evolution of the Precordillera terrane, providing a link to better understand the paired Laurentia margin and Lower Paleozoic paleogeography. The study was built upon a detailed facies and microfacies analysis where thirteen facies associations were recognized, representing a spectrum of environments ranging from deep subtidal, shallow subtidal to inter-supratidal sabkha facies. Our analysis allowed the recognition of three sequences (S1, S2 and S3) separated by unconformities (D1, D2, D3 and D4). A reciprocal sedimentation model is suggested to explain coarse-grained siliciclastic intervals overlying and bypassing subtidal limestones in S1 and S2. However the fine-grained siliciclastic-rich carbonate intervals within S2 seem to represent transgressive deposits, probably influenced by higher accommodation and climatically driven siliciclastic influx. Lateral facies and thickness variations suggest that the La Laja Formation developed during the progressive margin stabilization with differential subsidence. The sequence boundary separating the La Laja Formation from the overlying Zonda Formation represents an important architectural change from differential subsidence during the late rift stage in the Early-Middle Cambrian La Laja Formation to the passive margin stage with flat-lying remarkably continuous rhythmic dolomites in the overlying Upper Cambrian Zonda Formation. Further strengthening the stratigraphic similarities with the Lower Paleozoic of Laurentia, a similar transition has also been suggested for coeval units of the Laurentia paired margin. This work highlights the importance that Precordillera stratigraphy is linked to the early evolution of the paired margins during the Iapetus Ocean opening and Lower Paleozoic paleogeography reconstructions.Fil: Gomez, Fernando Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Astini, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaElsevier Science2015-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/37813Gomez, Fernando Javier; Astini, Ricardo Alfredo; Sedimentology and sequence stratigraphy from a mixed (carbonate-siliciclastic) rift to passive margin transition: The early to middle cambrian of the argentine precordillera; Elsevier Science; Sedimentary Geology; 316; 3-2015; 39-610037-0738CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0037073814002024info:eu-repo/semantics/altIdentifier/doi/10.1016/j.sedgeo.2014.11.003info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:05:36Zoai:ri.conicet.gov.ar:11336/37813instacron: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:34982025-09-03 10:05:36.672CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Sedimentology and sequence stratigraphy from a mixed (carbonate-siliciclastic) rift to passive margin transition: The early to middle cambrian of the argentine precordillera
title Sedimentology and sequence stratigraphy from a mixed (carbonate-siliciclastic) rift to passive margin transition: The early to middle cambrian of the argentine precordillera
spellingShingle Sedimentology and sequence stratigraphy from a mixed (carbonate-siliciclastic) rift to passive margin transition: The early to middle cambrian of the argentine precordillera
Gomez, Fernando Javier
Argentine Precordillera
Cambrian
Carbonate Platform
Sedimentology
Sequence Stratigraphy
title_short Sedimentology and sequence stratigraphy from a mixed (carbonate-siliciclastic) rift to passive margin transition: The early to middle cambrian of the argentine precordillera
title_full Sedimentology and sequence stratigraphy from a mixed (carbonate-siliciclastic) rift to passive margin transition: The early to middle cambrian of the argentine precordillera
title_fullStr Sedimentology and sequence stratigraphy from a mixed (carbonate-siliciclastic) rift to passive margin transition: The early to middle cambrian of the argentine precordillera
title_full_unstemmed Sedimentology and sequence stratigraphy from a mixed (carbonate-siliciclastic) rift to passive margin transition: The early to middle cambrian of the argentine precordillera
title_sort Sedimentology and sequence stratigraphy from a mixed (carbonate-siliciclastic) rift to passive margin transition: The early to middle cambrian of the argentine precordillera
dc.creator.none.fl_str_mv Gomez, Fernando Javier
Astini, Ricardo Alfredo
author Gomez, Fernando Javier
author_facet Gomez, Fernando Javier
Astini, Ricardo Alfredo
author_role author
author2 Astini, Ricardo Alfredo
author2_role author
dc.subject.none.fl_str_mv Argentine Precordillera
Cambrian
Carbonate Platform
Sedimentology
Sequence Stratigraphy
topic Argentine Precordillera
Cambrian
Carbonate Platform
Sedimentology
Sequence Stratigraphy
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Through the analysis of facies stacking patterns, geometries and bounding surfaces, sequence stratigraphy provides a framework to understand sedimentary facies distribution and evolution. Many published works contain noteworthy examples where a sequence stratigraphy approach was applied to Middle-Late Paleozoic, Mesozoic and Cenozoic sedimentary units. Early Paleozoic examples, however, remain relatively scarce. This article addresses the exceptionally well-exposed Early to Middle Cambrian La Laja Formation and equivalent units of the Argentine Precordillera carbonate bank. Given the stratigraphic and faunal similarities, the Precordillera is considered as a Laurentia-derived allochthonous terrane, which detached from the Laurentia margin during Early to Middle Cambrian and docked against western Gondwana margin by Mid-Ordovician time. This work focuses on the lowermost mixed carbonate-siliciclastic interval that records the early evolution of the Precordillera terrane, providing a link to better understand the paired Laurentia margin and Lower Paleozoic paleogeography. The study was built upon a detailed facies and microfacies analysis where thirteen facies associations were recognized, representing a spectrum of environments ranging from deep subtidal, shallow subtidal to inter-supratidal sabkha facies. Our analysis allowed the recognition of three sequences (S1, S2 and S3) separated by unconformities (D1, D2, D3 and D4). A reciprocal sedimentation model is suggested to explain coarse-grained siliciclastic intervals overlying and bypassing subtidal limestones in S1 and S2. However the fine-grained siliciclastic-rich carbonate intervals within S2 seem to represent transgressive deposits, probably influenced by higher accommodation and climatically driven siliciclastic influx. Lateral facies and thickness variations suggest that the La Laja Formation developed during the progressive margin stabilization with differential subsidence. The sequence boundary separating the La Laja Formation from the overlying Zonda Formation represents an important architectural change from differential subsidence during the late rift stage in the Early-Middle Cambrian La Laja Formation to the passive margin stage with flat-lying remarkably continuous rhythmic dolomites in the overlying Upper Cambrian Zonda Formation. Further strengthening the stratigraphic similarities with the Lower Paleozoic of Laurentia, a similar transition has also been suggested for coeval units of the Laurentia paired margin. This work highlights the importance that Precordillera stratigraphy is linked to the early evolution of the paired margins during the Iapetus Ocean opening and Lower Paleozoic paleogeography reconstructions.
Fil: Gomez, Fernando Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Astini, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
description Through the analysis of facies stacking patterns, geometries and bounding surfaces, sequence stratigraphy provides a framework to understand sedimentary facies distribution and evolution. Many published works contain noteworthy examples where a sequence stratigraphy approach was applied to Middle-Late Paleozoic, Mesozoic and Cenozoic sedimentary units. Early Paleozoic examples, however, remain relatively scarce. This article addresses the exceptionally well-exposed Early to Middle Cambrian La Laja Formation and equivalent units of the Argentine Precordillera carbonate bank. Given the stratigraphic and faunal similarities, the Precordillera is considered as a Laurentia-derived allochthonous terrane, which detached from the Laurentia margin during Early to Middle Cambrian and docked against western Gondwana margin by Mid-Ordovician time. This work focuses on the lowermost mixed carbonate-siliciclastic interval that records the early evolution of the Precordillera terrane, providing a link to better understand the paired Laurentia margin and Lower Paleozoic paleogeography. The study was built upon a detailed facies and microfacies analysis where thirteen facies associations were recognized, representing a spectrum of environments ranging from deep subtidal, shallow subtidal to inter-supratidal sabkha facies. Our analysis allowed the recognition of three sequences (S1, S2 and S3) separated by unconformities (D1, D2, D3 and D4). A reciprocal sedimentation model is suggested to explain coarse-grained siliciclastic intervals overlying and bypassing subtidal limestones in S1 and S2. However the fine-grained siliciclastic-rich carbonate intervals within S2 seem to represent transgressive deposits, probably influenced by higher accommodation and climatically driven siliciclastic influx. Lateral facies and thickness variations suggest that the La Laja Formation developed during the progressive margin stabilization with differential subsidence. The sequence boundary separating the La Laja Formation from the overlying Zonda Formation represents an important architectural change from differential subsidence during the late rift stage in the Early-Middle Cambrian La Laja Formation to the passive margin stage with flat-lying remarkably continuous rhythmic dolomites in the overlying Upper Cambrian Zonda Formation. Further strengthening the stratigraphic similarities with the Lower Paleozoic of Laurentia, a similar transition has also been suggested for coeval units of the Laurentia paired margin. This work highlights the importance that Precordillera stratigraphy is linked to the early evolution of the paired margins during the Iapetus Ocean opening and Lower Paleozoic paleogeography reconstructions.
publishDate 2015
dc.date.none.fl_str_mv 2015-03
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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/11336/37813
Gomez, Fernando Javier; Astini, Ricardo Alfredo; Sedimentology and sequence stratigraphy from a mixed (carbonate-siliciclastic) rift to passive margin transition: The early to middle cambrian of the argentine precordillera; Elsevier Science; Sedimentary Geology; 316; 3-2015; 39-61
0037-0738
CONICET Digital
CONICET
url http://hdl.handle.net/11336/37813
identifier_str_mv Gomez, Fernando Javier; Astini, Ricardo Alfredo; Sedimentology and sequence stratigraphy from a mixed (carbonate-siliciclastic) rift to passive margin transition: The early to middle cambrian of the argentine precordillera; Elsevier Science; Sedimentary Geology; 316; 3-2015; 39-61
0037-0738
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/S0037073814002024
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.sedgeo.2014.11.003
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
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dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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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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