Detrital zircon provenance from the Neuquén Basin (south-central Andes): Cretaceous geodynamic evolution and sedimentary response in a retroarc-foreland basin

The surface response, in terms of drainage pattern changes, to the Cretaceous geodynamic reorganization of the Andean subduction zone between 36°S and 41°S is reconstructed through the geochronology-based provenance study of alluvial detrital zircons. The age spectra obtained by 500 spot U-Pb ages r...

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Guardado en:
Detalles Bibliográficos
Publicado: 2012
Materias:
Binary alloys
Geochronology
Geodynamics
Lead alloys
Sedimentology
Silicate minerals
Uranium alloys
Zircon
Continental margin
Drainage patterns
Geodynamic evolution
Provenance studies
Sedimentary records
Sedimentary response
Surface expression
Tectonic evolution
Catchments
Benioff zone
Cretaceous
foreland basin
geochronology
geodynamics
provenance
subduction zone
tectonic evolution
uranium-lead dating
Andes
Argentina
Neuquen Basin
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00917613_v40_n6_p559_DiGiulio
http://hdl.handle.net/20.500.12110/paper_00917613_v40_n6_p559_DiGiulio
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00917613_v40_n6_p559_DiGiulio
record_format dspace
spelling paper:paper_00917613_v40_n6_p559_DiGiulio2023-06-08T15:08:12Z Detrital zircon provenance from the Neuquén Basin (south-central Andes): Cretaceous geodynamic evolution and sedimentary response in a retroarc-foreland basin Binary alloys Geochronology Geodynamics Lead alloys Sedimentology Silicate minerals Uranium alloys Zircon Continental margin Drainage patterns Geodynamic evolution Provenance studies Sedimentary records Sedimentary response Surface expression Tectonic evolution Catchments Benioff zone Cretaceous foreland basin geochronology geodynamics provenance subduction zone tectonic evolution uranium-lead dating Andes Argentina Neuquen Basin The surface response, in terms of drainage pattern changes, to the Cretaceous geodynamic reorganization of the Andean subduction zone between 36°S and 41°S is reconstructed through the geochronology-based provenance study of alluvial detrital zircons. The age spectra obtained by 500 spot U-Pb ages record an eastward provenance of detritus coming from the foreland during the Early Cretaceous backarc extensional stage, followed by westwardsourced clastics coming from the Cordillera during the Cenomanian. This drainage pattern reversal fits the regional unconformity in the sedimentary record that is linked to the geodynamic reorganization of the continental margin from an extensional to a compressional regime, forcing the Neuquén Basin to evolve from a retroarc to a foreland stage. After this inversion, the clastic systems progressively returned to be mainly fed by the foreland, due to the uplift of the peripheral bulge as a consequence of the Late Cretaceous thrust front migration. This tectonic evolution of the Neuquén Basin and the related response of the drainage pattern are thought to be the surface expression of the dip decrease of the Benioff subduction zone. © 2012 Geological Society of America. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00917613_v40_n6_p559_DiGiulio http://hdl.handle.net/20.500.12110/paper_00917613_v40_n6_p559_DiGiulio
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Binary alloys
Geochronology
Geodynamics
Lead alloys
Sedimentology
Silicate minerals
Uranium alloys
Zircon
Continental margin
Drainage patterns
Geodynamic evolution
Provenance studies
Sedimentary records
Sedimentary response
Surface expression
Tectonic evolution
Catchments
Benioff zone
Cretaceous
foreland basin
geochronology
geodynamics
provenance
subduction zone
tectonic evolution
uranium-lead dating
Andes
Argentina
Neuquen Basin
spellingShingle Binary alloys
Geochronology
Geodynamics
Lead alloys
Sedimentology
Silicate minerals
Uranium alloys
Zircon
Continental margin
Drainage patterns
Geodynamic evolution
Provenance studies
Sedimentary records
Sedimentary response
Surface expression
Tectonic evolution
Catchments
Benioff zone
Cretaceous
foreland basin
geochronology
geodynamics
provenance
subduction zone
tectonic evolution
uranium-lead dating
Andes
Argentina
Neuquen Basin
Detrital zircon provenance from the Neuquén Basin (south-central Andes): Cretaceous geodynamic evolution and sedimentary response in a retroarc-foreland basin
topic_facet Binary alloys
Geochronology
Geodynamics
Lead alloys
Sedimentology
Silicate minerals
Uranium alloys
Zircon
Continental margin
Drainage patterns
Geodynamic evolution
Provenance studies
Sedimentary records
Sedimentary response
Surface expression
Tectonic evolution
Catchments
Benioff zone
Cretaceous
foreland basin
geochronology
geodynamics
provenance
subduction zone
tectonic evolution
uranium-lead dating
Andes
Argentina
Neuquen Basin
description The surface response, in terms of drainage pattern changes, to the Cretaceous geodynamic reorganization of the Andean subduction zone between 36°S and 41°S is reconstructed through the geochronology-based provenance study of alluvial detrital zircons. The age spectra obtained by 500 spot U-Pb ages record an eastward provenance of detritus coming from the foreland during the Early Cretaceous backarc extensional stage, followed by westwardsourced clastics coming from the Cordillera during the Cenomanian. This drainage pattern reversal fits the regional unconformity in the sedimentary record that is linked to the geodynamic reorganization of the continental margin from an extensional to a compressional regime, forcing the Neuquén Basin to evolve from a retroarc to a foreland stage. After this inversion, the clastic systems progressively returned to be mainly fed by the foreland, due to the uplift of the peripheral bulge as a consequence of the Late Cretaceous thrust front migration. This tectonic evolution of the Neuquén Basin and the related response of the drainage pattern are thought to be the surface expression of the dip decrease of the Benioff subduction zone. © 2012 Geological Society of America.
title Detrital zircon provenance from the Neuquén Basin (south-central Andes): Cretaceous geodynamic evolution and sedimentary response in a retroarc-foreland basin
title_short Detrital zircon provenance from the Neuquén Basin (south-central Andes): Cretaceous geodynamic evolution and sedimentary response in a retroarc-foreland basin
title_full Detrital zircon provenance from the Neuquén Basin (south-central Andes): Cretaceous geodynamic evolution and sedimentary response in a retroarc-foreland basin
title_fullStr Detrital zircon provenance from the Neuquén Basin (south-central Andes): Cretaceous geodynamic evolution and sedimentary response in a retroarc-foreland basin
title_full_unstemmed Detrital zircon provenance from the Neuquén Basin (south-central Andes): Cretaceous geodynamic evolution and sedimentary response in a retroarc-foreland basin
title_sort detrital zircon provenance from the neuquén basin (south-central andes): cretaceous geodynamic evolution and sedimentary response in a retroarc-foreland basin
publishDate 2012
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00917613_v40_n6_p559_DiGiulio
http://hdl.handle.net/20.500.12110/paper_00917613_v40_n6_p559_DiGiulio
_version_ 1768542119108018176

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