The North Patagonian orogenic front and related foreland evolution during the Miocene, analyzed from synorogenic sedimentation and U/Pb dating (~42°S)

Miocene sedimentary successions of the Ñirihuau and Collón Cura formations east of the El Maitén Belt constitute a partial record of the Andean exhumation, defining a synorogenic infill of the Ñirihuau Basin in the foothills of the North Patagonian fold and thrust belt. Gravimetric and seismic data...

Descripción completa

Detalles Bibliográficos
Autores principales:	Tobal, Jonathan Elías, Sagripanti, Lucia, Folguera, Andrés, Orts, Dario Leandro, Ramos, Victor Alberto
Publicado:	2015
Materias:	Andean uplift Foreland basin Growth strata Ñirihuau Basin depocenter fold and thrust belt foreland basin Miocene orogenic belt reconstruction sedimentation tectonic evolution tectonic setting unconformity uplift uranium-lead dating Patagonia Cura
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08959811_v64_n_p467_Ramos http://hdl.handle.net/20.500.12110/paper_08959811_v64_n_p467_Ramos
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_08959811_v64_n_p467_Ramos
record_format	dspace
spelling	paper:paper_08959811_v64_n_p467_Ramos2023-06-08T15:48:51Z The North Patagonian orogenic front and related foreland evolution during the Miocene, analyzed from synorogenic sedimentation and U/Pb dating (~42°S) Tobal, Jonathan Elías Sagripanti, Lucia Folguera, Andrés Orts, Dario Leandro Ramos, Victor Alberto Andean uplift Foreland basin Growth strata Ñirihuau Basin depocenter fold and thrust belt foreland basin Miocene orogenic belt reconstruction sedimentation tectonic evolution tectonic setting unconformity uplift uranium-lead dating Patagonia Cura Miocene sedimentary successions of the Ñirihuau and Collón Cura formations east of the El Maitén Belt constitute a partial record of the Andean exhumation, defining a synorogenic infill of the Ñirihuau Basin in the foothills of the North Patagonian fold and thrust belt. Gravimetric and seismic data allow recognizing the internal arrangement and geometry of these depocenters that host both units, separating a synextensional section previous to the Andean development at these latitudes, from a series of syncontractional units above. A series of progressive unconformities in the upper terms shows the synorogenic character of these units corresponding to the different pulses of deformation that occurred during the middle Miocene. New U-Pb ages constrain these pulses to the ~13.5-12.9 Ma interval and allow reconstructing the tectonic history of this region based on the detrital zircon source populations. The U-Pb maximum ages of sedimentation give to the Ñirihuau Formation in particular a younger age than previously assumed. Additionally, synsedimentary deformation in strata of the upper exposures of the Collón Cura Formation associated with contractional structures and U-Pb ages allow identifying a younger paleoseismogenic pulse in ~11.3 Ma. Thus, based on these data and a compilation of previous datasets, a tectonic evolution is proposed characterized by a contractional episode that migrated eastwardly since ~19 to 15 Ma producing the Gastre broken foreland and then retracted to the eastern North Patagonian Precordillera, where out-of-sequence thrusts cannibalized the wedge top zone in the El Maitén belt at ~13.5-11.3 Ma. © 2015 Elsevier Ltd. Fil:Tobal, J.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Sagripanti, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Folguera, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Orts, D.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ramos, V.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08959811_v64_n_p467_Ramos http://hdl.handle.net/20.500.12110/paper_08959811_v64_n_p467_Ramos
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Andean uplift Foreland basin Growth strata Ñirihuau Basin depocenter fold and thrust belt foreland basin Miocene orogenic belt reconstruction sedimentation tectonic evolution tectonic setting unconformity uplift uranium-lead dating Patagonia Cura
spellingShingle	Andean uplift Foreland basin Growth strata Ñirihuau Basin depocenter fold and thrust belt foreland basin Miocene orogenic belt reconstruction sedimentation tectonic evolution tectonic setting unconformity uplift uranium-lead dating Patagonia Cura Tobal, Jonathan Elías Sagripanti, Lucia Folguera, Andrés Orts, Dario Leandro Ramos, Victor Alberto The North Patagonian orogenic front and related foreland evolution during the Miocene, analyzed from synorogenic sedimentation and U/Pb dating (~42°S)
topic_facet	Andean uplift Foreland basin Growth strata Ñirihuau Basin depocenter fold and thrust belt foreland basin Miocene orogenic belt reconstruction sedimentation tectonic evolution tectonic setting unconformity uplift uranium-lead dating Patagonia Cura
description	Miocene sedimentary successions of the Ñirihuau and Collón Cura formations east of the El Maitén Belt constitute a partial record of the Andean exhumation, defining a synorogenic infill of the Ñirihuau Basin in the foothills of the North Patagonian fold and thrust belt. Gravimetric and seismic data allow recognizing the internal arrangement and geometry of these depocenters that host both units, separating a synextensional section previous to the Andean development at these latitudes, from a series of syncontractional units above. A series of progressive unconformities in the upper terms shows the synorogenic character of these units corresponding to the different pulses of deformation that occurred during the middle Miocene. New U-Pb ages constrain these pulses to the ~13.5-12.9 Ma interval and allow reconstructing the tectonic history of this region based on the detrital zircon source populations. The U-Pb maximum ages of sedimentation give to the Ñirihuau Formation in particular a younger age than previously assumed. Additionally, synsedimentary deformation in strata of the upper exposures of the Collón Cura Formation associated with contractional structures and U-Pb ages allow identifying a younger paleoseismogenic pulse in ~11.3 Ma. Thus, based on these data and a compilation of previous datasets, a tectonic evolution is proposed characterized by a contractional episode that migrated eastwardly since ~19 to 15 Ma producing the Gastre broken foreland and then retracted to the eastern North Patagonian Precordillera, where out-of-sequence thrusts cannibalized the wedge top zone in the El Maitén belt at ~13.5-11.3 Ma. © 2015 Elsevier Ltd.
author	Tobal, Jonathan Elías Sagripanti, Lucia Folguera, Andrés Orts, Dario Leandro Ramos, Victor Alberto
author_facet	Tobal, Jonathan Elías Sagripanti, Lucia Folguera, Andrés Orts, Dario Leandro Ramos, Victor Alberto
author_sort	Tobal, Jonathan Elías
title	The North Patagonian orogenic front and related foreland evolution during the Miocene, analyzed from synorogenic sedimentation and U/Pb dating (~42°S)
title_short	The North Patagonian orogenic front and related foreland evolution during the Miocene, analyzed from synorogenic sedimentation and U/Pb dating (~42°S)
title_full	The North Patagonian orogenic front and related foreland evolution during the Miocene, analyzed from synorogenic sedimentation and U/Pb dating (~42°S)
title_fullStr	The North Patagonian orogenic front and related foreland evolution during the Miocene, analyzed from synorogenic sedimentation and U/Pb dating (~42°S)
title_full_unstemmed	The North Patagonian orogenic front and related foreland evolution during the Miocene, analyzed from synorogenic sedimentation and U/Pb dating (~42°S)
title_sort	north patagonian orogenic front and related foreland evolution during the miocene, analyzed from synorogenic sedimentation and u/pb dating (~42°s)
publishDate	2015
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08959811_v64_n_p467_Ramos http://hdl.handle.net/20.500.12110/paper_08959811_v64_n_p467_Ramos
work_keys_str_mv	AT tobaljonathanelias thenorthpatagonianorogenicfrontandrelatedforelandevolutionduringthemioceneanalyzedfromsynorogenicsedimentationandupbdating42s AT sagripantilucia thenorthpatagonianorogenicfrontandrelatedforelandevolutionduringthemioceneanalyzedfromsynorogenicsedimentationandupbdating42s AT folgueraandres thenorthpatagonianorogenicfrontandrelatedforelandevolutionduringthemioceneanalyzedfromsynorogenicsedimentationandupbdating42s AT ortsdarioleandro thenorthpatagonianorogenicfrontandrelatedforelandevolutionduringthemioceneanalyzedfromsynorogenicsedimentationandupbdating42s AT ramosvictoralberto thenorthpatagonianorogenicfrontandrelatedforelandevolutionduringthemioceneanalyzedfromsynorogenicsedimentationandupbdating42s AT tobaljonathanelias northpatagonianorogenicfrontandrelatedforelandevolutionduringthemioceneanalyzedfromsynorogenicsedimentationandupbdating42s AT sagripantilucia northpatagonianorogenicfrontandrelatedforelandevolutionduringthemioceneanalyzedfromsynorogenicsedimentationandupbdating42s AT folgueraandres northpatagonianorogenicfrontandrelatedforelandevolutionduringthemioceneanalyzedfromsynorogenicsedimentationandupbdating42s AT ortsdarioleandro northpatagonianorogenicfrontandrelatedforelandevolutionduringthemioceneanalyzedfromsynorogenicsedimentationandupbdating42s AT ramosvictoralberto northpatagonianorogenicfrontandrelatedforelandevolutionduringthemioceneanalyzedfromsynorogenicsedimentationandupbdating42s
_version_	1768541900576391168

The North Patagonian orogenic front and related foreland evolution during the Miocene, analyzed from synorogenic sedimentation and U/Pb dating (~42°S)

Ejemplares similares