New evidence of the importance of faulting in the structure of the Sierras Australes de la Provincia de Buenos Aires

Mostrar todas las versiones(3)

The Sierras Australes de la Provincia de Buenos Aires or Sierra de la Ventana are situated in the south part of Buenos Aires province, Argentina, between 37°-39°S and 61°-63°W, and constitute a curved fold and thrust belt with a general northwest strike. They are formed of Precambrian to Permian roc...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autor principal: Tomezzoli, R.N.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 1998
Materias:
faulting
fold and thrust belt
Argentina
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00044822_v53_n1_p117_Tomezzoli
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paperaa:paper_00044822_v53_n1_p117_Tomezzoli
record_format dspace
spelling paperaa:paper_00044822_v53_n1_p117_Tomezzoli2023-06-12T16:39:53Z New evidence of the importance of faulting in the structure of the Sierras Australes de la Provincia de Buenos Aires Rev. Asoc. Geol. Argent. 1998;53(1):117-129 Tomezzoli, R.N. faulting fold and thrust belt Argentina The Sierras Australes de la Provincia de Buenos Aires or Sierra de la Ventana are situated in the south part of Buenos Aires province, Argentina, between 37°-39°S and 61°-63°W, and constitute a curved fold and thrust belt with a general northwest strike. They are formed of Precambrian to Permian rocks. The oldest and more intensely deformed rocks out in the western ranges, whereas the younger and less deformed are located in the east. Traditionally, these ranges were considered as an example of pure folding without any associated faulting. In this paper, mesoscale structural sections that prove the importance of faulting in the ranges development are described. On a regional scale, the presence of tectonic contacts between the Lolen Formation (upper Devonian) and Providencia Formation (lower Devonian), and between the latter and the Neposta Formation (lower Devonian) are suggested in Parque Tornquist, Estancia Las Vertientes and at Cerro Tres Picos. Field evidence, suggests that the Pillahunico Ranges are structurally higher than the Ventana Ranges, because of a north-east dipping underthrust. Fil:Tomezzoli, R.N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1998 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00044822_v53_n1_p117_Tomezzoli
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
topic faulting
fold and thrust belt
Argentina
spellingShingle faulting
fold and thrust belt
Argentina
Tomezzoli, R.N.
New evidence of the importance of faulting in the structure of the Sierras Australes de la Provincia de Buenos Aires
topic_facet faulting
fold and thrust belt
Argentina
description The Sierras Australes de la Provincia de Buenos Aires or Sierra de la Ventana are situated in the south part of Buenos Aires province, Argentina, between 37°-39°S and 61°-63°W, and constitute a curved fold and thrust belt with a general northwest strike. They are formed of Precambrian to Permian rocks. The oldest and more intensely deformed rocks out in the western ranges, whereas the younger and less deformed are located in the east. Traditionally, these ranges were considered as an example of pure folding without any associated faulting. In this paper, mesoscale structural sections that prove the importance of faulting in the ranges development are described. On a regional scale, the presence of tectonic contacts between the Lolen Formation (upper Devonian) and Providencia Formation (lower Devonian), and between the latter and the Neposta Formation (lower Devonian) are suggested in Parque Tornquist, Estancia Las Vertientes and at Cerro Tres Picos. Field evidence, suggests that the Pillahunico Ranges are structurally higher than the Ventana Ranges, because of a north-east dipping underthrust.
format Artículo
Artículo
publishedVersion
author Tomezzoli, R.N.
author_facet Tomezzoli, R.N.
author_sort Tomezzoli, R.N.
title New evidence of the importance of faulting in the structure of the Sierras Australes de la Provincia de Buenos Aires
title_short New evidence of the importance of faulting in the structure of the Sierras Australes de la Provincia de Buenos Aires
title_full New evidence of the importance of faulting in the structure of the Sierras Australes de la Provincia de Buenos Aires
title_fullStr New evidence of the importance of faulting in the structure of the Sierras Australes de la Provincia de Buenos Aires
title_full_unstemmed New evidence of the importance of faulting in the structure of the Sierras Australes de la Provincia de Buenos Aires
title_sort new evidence of the importance of faulting in the structure of the sierras australes de la provincia de buenos aires
publishDate 1998
url http://hdl.handle.net/20.500.12110/paper_00044822_v53_n1_p117_Tomezzoli
work_keys_str_mv AT tomezzolirn newevidenceoftheimportanceoffaultinginthestructureofthesierrasaustralesdelaprovinciadebuenosaires
_version_ 1769810202998079488

Ejemplares similares