Palaeomagnetic data from the Precordillera fold and thrust belt constraining Neogene foreland evolution of the Pampean flat-slab segment (Central Andes, Argentina)

Available and new palaeomagnetic data reveal transpressional deformation in theArgentine Precordillera fold and thrust belt contemporaneous with Juan Fernández ridge subduction.Localized changes in the orientation of palaeomagnetic directions indicate a vertical axisrotation pattern linked to local,...

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Autores principales:	Japas, Maria Silvia, Ré, Guillermo Héctor, Oriolo, Sebastián, Vilas, Juan Francisco A.
Publicado:	2016
Materias:	deformation fold and thrust belt foreland basin Neogene paleomagnetism slab tectonic rotation transpression Andes Argentina Precordillera Filicophyta
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03058719_v425_n1_p81_Japas http://hdl.handle.net/20.500.12110/paper_03058719_v425_n1_p81_Japas
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_03058719_v425_n1_p81_Japas
record_format	dspace
spelling	paper:paper_03058719_v425_n1_p81_Japas2023-06-08T15:31:01Z Palaeomagnetic data from the Precordillera fold and thrust belt constraining Neogene foreland evolution of the Pampean flat-slab segment (Central Andes, Argentina) Japas, Maria Silvia Ré, Guillermo Héctor Oriolo, Sebastián Vilas, Juan Francisco A. deformation fold and thrust belt foreland basin Neogene paleomagnetism slab tectonic rotation transpression Andes Argentina Precordillera Filicophyta Available and new palaeomagnetic data reveal transpressional deformation in theArgentine Precordillera fold and thrust belt contemporaneous with Juan Fernández ridge subduction.Localized changes in the orientation of palaeomagnetic directions indicate a vertical axisrotation pattern linked to local, oblique brittle-ductile shear zones that overprint the regional structure.The nearly homogeneous clockwise block rotation pattern from Western-Central Precordillerashows localized rotation nulls along NNW-trending left-lateral oblique belts, revealing thatoverprinting anticlockwise tectonic rotations could have balanced previous clockwise rotations.Conversely, clockwise rotations in Eastern Precordillera are only localized in the vicinity ofthese NNW-trending structures, and are controlled by rigid block rotations linked to basementinvolveddeformation.These results combined with available regional palaeomagnetic data inthe forearc would indicate a regional bending of the upper plate margin between 27° S and 33°S that seems to be related to the subduction of the Juan Fernández aseismic ridge. © The Author(s). Fil:Japas, M.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ré, G.H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Oriolo, S.N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vilas, J.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03058719_v425_n1_p81_Japas http://hdl.handle.net/20.500.12110/paper_03058719_v425_n1_p81_Japas
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	deformation fold and thrust belt foreland basin Neogene paleomagnetism slab tectonic rotation transpression Andes Argentina Precordillera Filicophyta
spellingShingle	deformation fold and thrust belt foreland basin Neogene paleomagnetism slab tectonic rotation transpression Andes Argentina Precordillera Filicophyta Japas, Maria Silvia Ré, Guillermo Héctor Oriolo, Sebastián Vilas, Juan Francisco A. Palaeomagnetic data from the Precordillera fold and thrust belt constraining Neogene foreland evolution of the Pampean flat-slab segment (Central Andes, Argentina)
topic_facet	deformation fold and thrust belt foreland basin Neogene paleomagnetism slab tectonic rotation transpression Andes Argentina Precordillera Filicophyta
description	Available and new palaeomagnetic data reveal transpressional deformation in theArgentine Precordillera fold and thrust belt contemporaneous with Juan Fernández ridge subduction.Localized changes in the orientation of palaeomagnetic directions indicate a vertical axisrotation pattern linked to local, oblique brittle-ductile shear zones that overprint the regional structure.The nearly homogeneous clockwise block rotation pattern from Western-Central Precordillerashows localized rotation nulls along NNW-trending left-lateral oblique belts, revealing thatoverprinting anticlockwise tectonic rotations could have balanced previous clockwise rotations.Conversely, clockwise rotations in Eastern Precordillera are only localized in the vicinity ofthese NNW-trending structures, and are controlled by rigid block rotations linked to basementinvolveddeformation.These results combined with available regional palaeomagnetic data inthe forearc would indicate a regional bending of the upper plate margin between 27° S and 33°S that seems to be related to the subduction of the Juan Fernández aseismic ridge. © The Author(s).
author	Japas, Maria Silvia Ré, Guillermo Héctor Oriolo, Sebastián Vilas, Juan Francisco A.
author_facet	Japas, Maria Silvia Ré, Guillermo Héctor Oriolo, Sebastián Vilas, Juan Francisco A.
author_sort	Japas, Maria Silvia
title	Palaeomagnetic data from the Precordillera fold and thrust belt constraining Neogene foreland evolution of the Pampean flat-slab segment (Central Andes, Argentina)
title_short	Palaeomagnetic data from the Precordillera fold and thrust belt constraining Neogene foreland evolution of the Pampean flat-slab segment (Central Andes, Argentina)
title_full	Palaeomagnetic data from the Precordillera fold and thrust belt constraining Neogene foreland evolution of the Pampean flat-slab segment (Central Andes, Argentina)
title_fullStr	Palaeomagnetic data from the Precordillera fold and thrust belt constraining Neogene foreland evolution of the Pampean flat-slab segment (Central Andes, Argentina)
title_full_unstemmed	Palaeomagnetic data from the Precordillera fold and thrust belt constraining Neogene foreland evolution of the Pampean flat-slab segment (Central Andes, Argentina)
title_sort	palaeomagnetic data from the precordillera fold and thrust belt constraining neogene foreland evolution of the pampean flat-slab segment (central andes, argentina)
publishDate	2016
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03058719_v425_n1_p81_Japas http://hdl.handle.net/20.500.12110/paper_03058719_v425_n1_p81_Japas
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Palaeomagnetic data from the Precordillera fold and thrust belt constraining Neogene foreland evolution of the Pampean flat-slab segment (Central Andes, Argentina)

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