The structure of the Sierras Australes (Buenos Aires Province, Argentina): An example of folding in a transpressive environment

The Sierras Australes of eastern Argentina record the progressive suturing of the Patagonian terrane with the South American craton during Permo-Triassic time. On the South American side of the suture, fold axes and axial plane cleavage show a systematic variation in orientation across the region, r...

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Detalles Bibliográficos
Autor principal:	Sellés Martínez, J.
Formato:	JOUR
Materias:	folding suture zone tectonics transpression Argentina, Buenos Aires Province, Sierras Australes
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_08959811_v2_n4_p317_SellesMartinez
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	todo:paper_08959811_v2_n4_p317_SellesMartinez2023-10-03T15:42:55Z The structure of the Sierras Australes (Buenos Aires Province, Argentina): An example of folding in a transpressive environment Sellés Martínez, J. folding suture zone tectonics transpression Argentina, Buenos Aires Province, Sierras Australes The Sierras Australes of eastern Argentina record the progressive suturing of the Patagonian terrane with the South American craton during Permo-Triassic time. On the South American side of the suture, fold axes and axial plane cleavage show a systematic variation in orientation across the region, rotating counterclockwise from the southern and central segments to the northwestern segments. These data, in combination with finite strain measurements indicative of extension parallel to fold axes, suggest progressive, horizontal, simple shear with a left-lateral sense. Thus, the suturing probably had a strong, transpressive component. This conclusion explains the characteristic sigmoidal shape of the sierras and is supported by comparison with scale-model experiments conducted by other investigators. Furthermore, this interpretation is in agreement with paleomagnetic data. © 1989. Fil:Sellés Martínez, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08959811_v2_n4_p317_SellesMartinez
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	folding suture zone tectonics transpression Argentina, Buenos Aires Province, Sierras Australes
spellingShingle	folding suture zone tectonics transpression Argentina, Buenos Aires Province, Sierras Australes Sellés Martínez, J. The structure of the Sierras Australes (Buenos Aires Province, Argentina): An example of folding in a transpressive environment
topic_facet	folding suture zone tectonics transpression Argentina, Buenos Aires Province, Sierras Australes
description	The Sierras Australes of eastern Argentina record the progressive suturing of the Patagonian terrane with the South American craton during Permo-Triassic time. On the South American side of the suture, fold axes and axial plane cleavage show a systematic variation in orientation across the region, rotating counterclockwise from the southern and central segments to the northwestern segments. These data, in combination with finite strain measurements indicative of extension parallel to fold axes, suggest progressive, horizontal, simple shear with a left-lateral sense. Thus, the suturing probably had a strong, transpressive component. This conclusion explains the characteristic sigmoidal shape of the sierras and is supported by comparison with scale-model experiments conducted by other investigators. Furthermore, this interpretation is in agreement with paleomagnetic data. © 1989.
format	JOUR
author	Sellés Martínez, J.
author_facet	Sellés Martínez, J.
author_sort	Sellés Martínez, J.
title	The structure of the Sierras Australes (Buenos Aires Province, Argentina): An example of folding in a transpressive environment
title_short	The structure of the Sierras Australes (Buenos Aires Province, Argentina): An example of folding in a transpressive environment
title_full	The structure of the Sierras Australes (Buenos Aires Province, Argentina): An example of folding in a transpressive environment
title_fullStr	The structure of the Sierras Australes (Buenos Aires Province, Argentina): An example of folding in a transpressive environment
title_full_unstemmed	The structure of the Sierras Australes (Buenos Aires Province, Argentina): An example of folding in a transpressive environment
title_sort	structure of the sierras australes (buenos aires province, argentina): an example of folding in a transpressive environment
url	http://hdl.handle.net/20.500.12110/paper_08959811_v2_n4_p317_SellesMartinez
work_keys_str_mv	AT sellesmartinezj thestructureofthesierrasaustralesbuenosairesprovinceargentinaanexampleoffoldinginatranspressiveenvironment AT sellesmartinezj structureofthesierrasaustralesbuenosairesprovinceargentinaanexampleoffoldinginatranspressiveenvironment
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The structure of the Sierras Australes (Buenos Aires Province, Argentina): An example of folding in a transpressive environment

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