Timing and stratigraphic evolution of a Miocene foreland unroofing sequence in the Austral–Magallanes Basin during Southern Patagonian Andes uplift
- Autores
- Aramendía, Inés; Cuitiño, José Ignacio; Ghiglione, Matias; Bouza, Pablo Jose
- Año de publicación
- 2023
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Detrital zircon U–Pb geochronology is a widely used technique for interpreting sedimentary provenance in basin systems. This, combined with detailed sedimentary facies interpretation and stratigraphy evolution, has been extensively applied in foreland basin settings to understand tectonic processes by tracking the exposure and erosion of distinct sediment source areas through time. We present a case study in the Miocene foreland sedimentary record of the NW Austral–Magallanes Basin (c. 47° 30′ S), which is associated with the main phase of Andean uplift. We define three sedimentary units (SU) for palaeoenvironmental interpretation from shallow-marine deposits (SU-I) to mixed-load fluvial deposits (SU-II) to an alluvial fan (SU-III). Also, we constrain the timing of this synorogenic clastic wedge between c. 20 and c. 12 Ma applying U–Pb zircon maximum depositional ages of six sandstones and one tuff sample. From detrital zircon provenance analysis, we document a progressive upsection loss of contribution from younger units and an enrichment of older units derived from hinterland sources, suggesting the development of an unroofing erosional process owing to coeval Andean uplift of the cordilleran sources. Tectonostratigraphic stages determine the initial stages of orogenic uplift (Stage 1), the subsequent advance of the orogenic belt and progressive loss of accommodation space (Stage 2) and finally foreland clogging (Stage 3).
Fil: Aramendía, Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Cuitiño, José Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; 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: Bouza, Pablo Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina - Materia
-
SEDIMENTOLOGY
GEOCHRONOLOGY
ANDES
PATAGONIA - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/218336
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Timing and stratigraphic evolution of a Miocene foreland unroofing sequence in the Austral–Magallanes Basin during Southern Patagonian Andes upliftAramendía, InésCuitiño, José IgnacioGhiglione, MatiasBouza, Pablo JoseSEDIMENTOLOGYGEOCHRONOLOGYANDESPATAGONIAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Detrital zircon U–Pb geochronology is a widely used technique for interpreting sedimentary provenance in basin systems. This, combined with detailed sedimentary facies interpretation and stratigraphy evolution, has been extensively applied in foreland basin settings to understand tectonic processes by tracking the exposure and erosion of distinct sediment source areas through time. We present a case study in the Miocene foreland sedimentary record of the NW Austral–Magallanes Basin (c. 47° 30′ S), which is associated with the main phase of Andean uplift. We define three sedimentary units (SU) for palaeoenvironmental interpretation from shallow-marine deposits (SU-I) to mixed-load fluvial deposits (SU-II) to an alluvial fan (SU-III). Also, we constrain the timing of this synorogenic clastic wedge between c. 20 and c. 12 Ma applying U–Pb zircon maximum depositional ages of six sandstones and one tuff sample. From detrital zircon provenance analysis, we document a progressive upsection loss of contribution from younger units and an enrichment of older units derived from hinterland sources, suggesting the development of an unroofing erosional process owing to coeval Andean uplift of the cordilleran sources. Tectonostratigraphic stages determine the initial stages of orogenic uplift (Stage 1), the subsequent advance of the orogenic belt and progressive loss of accommodation space (Stage 2) and finally foreland clogging (Stage 3).Fil: Aramendía, Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaFil: Cuitiño, José Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; 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: Bouza, Pablo Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaGeological Society Publications House2023-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/218336Aramendía, Inés; Cuitiño, José Ignacio; Ghiglione, Matias; Bouza, Pablo Jose; Timing and stratigraphic evolution of a Miocene foreland unroofing sequence in the Austral–Magallanes Basin during Southern Patagonian Andes uplift; Geological Society Publications House; Journal of the Geological Society; 180; 1; 1-2023; 1-490016-7649CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1144/jgs2022-038info:eu-repo/semantics/altIdentifier/url/https://chooser.crossref.org/?doi=10.1144%2Fjgs2022-038info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:16:16Zoai:ri.conicet.gov.ar:11336/218336instacron: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 10:16:16.421CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Timing and stratigraphic evolution of a Miocene foreland unroofing sequence in the Austral–Magallanes Basin during Southern Patagonian Andes uplift |
title |
Timing and stratigraphic evolution of a Miocene foreland unroofing sequence in the Austral–Magallanes Basin during Southern Patagonian Andes uplift |
spellingShingle |
Timing and stratigraphic evolution of a Miocene foreland unroofing sequence in the Austral–Magallanes Basin during Southern Patagonian Andes uplift Aramendía, Inés SEDIMENTOLOGY GEOCHRONOLOGY ANDES PATAGONIA |
title_short |
Timing and stratigraphic evolution of a Miocene foreland unroofing sequence in the Austral–Magallanes Basin during Southern Patagonian Andes uplift |
title_full |
Timing and stratigraphic evolution of a Miocene foreland unroofing sequence in the Austral–Magallanes Basin during Southern Patagonian Andes uplift |
title_fullStr |
Timing and stratigraphic evolution of a Miocene foreland unroofing sequence in the Austral–Magallanes Basin during Southern Patagonian Andes uplift |
title_full_unstemmed |
Timing and stratigraphic evolution of a Miocene foreland unroofing sequence in the Austral–Magallanes Basin during Southern Patagonian Andes uplift |
title_sort |
Timing and stratigraphic evolution of a Miocene foreland unroofing sequence in the Austral–Magallanes Basin during Southern Patagonian Andes uplift |
dc.creator.none.fl_str_mv |
Aramendía, Inés Cuitiño, José Ignacio Ghiglione, Matias Bouza, Pablo Jose |
author |
Aramendía, Inés |
author_facet |
Aramendía, Inés Cuitiño, José Ignacio Ghiglione, Matias Bouza, Pablo Jose |
author_role |
author |
author2 |
Cuitiño, José Ignacio Ghiglione, Matias Bouza, Pablo Jose |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
SEDIMENTOLOGY GEOCHRONOLOGY ANDES PATAGONIA |
topic |
SEDIMENTOLOGY GEOCHRONOLOGY ANDES PATAGONIA |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Detrital zircon U–Pb geochronology is a widely used technique for interpreting sedimentary provenance in basin systems. This, combined with detailed sedimentary facies interpretation and stratigraphy evolution, has been extensively applied in foreland basin settings to understand tectonic processes by tracking the exposure and erosion of distinct sediment source areas through time. We present a case study in the Miocene foreland sedimentary record of the NW Austral–Magallanes Basin (c. 47° 30′ S), which is associated with the main phase of Andean uplift. We define three sedimentary units (SU) for palaeoenvironmental interpretation from shallow-marine deposits (SU-I) to mixed-load fluvial deposits (SU-II) to an alluvial fan (SU-III). Also, we constrain the timing of this synorogenic clastic wedge between c. 20 and c. 12 Ma applying U–Pb zircon maximum depositional ages of six sandstones and one tuff sample. From detrital zircon provenance analysis, we document a progressive upsection loss of contribution from younger units and an enrichment of older units derived from hinterland sources, suggesting the development of an unroofing erosional process owing to coeval Andean uplift of the cordilleran sources. Tectonostratigraphic stages determine the initial stages of orogenic uplift (Stage 1), the subsequent advance of the orogenic belt and progressive loss of accommodation space (Stage 2) and finally foreland clogging (Stage 3). Fil: Aramendía, Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina Fil: Cuitiño, José Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; 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: Bouza, Pablo Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina |
description |
Detrital zircon U–Pb geochronology is a widely used technique for interpreting sedimentary provenance in basin systems. This, combined with detailed sedimentary facies interpretation and stratigraphy evolution, has been extensively applied in foreland basin settings to understand tectonic processes by tracking the exposure and erosion of distinct sediment source areas through time. We present a case study in the Miocene foreland sedimentary record of the NW Austral–Magallanes Basin (c. 47° 30′ S), which is associated with the main phase of Andean uplift. We define three sedimentary units (SU) for palaeoenvironmental interpretation from shallow-marine deposits (SU-I) to mixed-load fluvial deposits (SU-II) to an alluvial fan (SU-III). Also, we constrain the timing of this synorogenic clastic wedge between c. 20 and c. 12 Ma applying U–Pb zircon maximum depositional ages of six sandstones and one tuff sample. From detrital zircon provenance analysis, we document a progressive upsection loss of contribution from younger units and an enrichment of older units derived from hinterland sources, suggesting the development of an unroofing erosional process owing to coeval Andean uplift of the cordilleran sources. Tectonostratigraphic stages determine the initial stages of orogenic uplift (Stage 1), the subsequent advance of the orogenic belt and progressive loss of accommodation space (Stage 2) and finally foreland clogging (Stage 3). |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-01 |
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/11336/218336 Aramendía, Inés; Cuitiño, José Ignacio; Ghiglione, Matias; Bouza, Pablo Jose; Timing and stratigraphic evolution of a Miocene foreland unroofing sequence in the Austral–Magallanes Basin during Southern Patagonian Andes uplift; Geological Society Publications House; Journal of the Geological Society; 180; 1; 1-2023; 1-49 0016-7649 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/218336 |
identifier_str_mv |
Aramendía, Inés; Cuitiño, José Ignacio; Ghiglione, Matias; Bouza, Pablo Jose; Timing and stratigraphic evolution of a Miocene foreland unroofing sequence in the Austral–Magallanes Basin during Southern Patagonian Andes uplift; Geological Society Publications House; Journal of the Geological Society; 180; 1; 1-2023; 1-49 0016-7649 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1144/jgs2022-038 info:eu-repo/semantics/altIdentifier/url/https://chooser.crossref.org/?doi=10.1144%2Fjgs2022-038 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Geological Society Publications House |
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Geological Society Publications House |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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