New evidence of the importance of faulting in the structure of the Sierras Australes de la Provincia de Buenos Aires
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...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00044822_v53_n1_p117_Tomezzoli https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00044822_v53_n1_p117_Tomezzoli_oai |
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I28-R145-paper_00044822_v53_n1_p117_Tomezzoli_oai2024-08-16 Tomezzoli, R.N. 1998 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. application/pdf http://hdl.handle.net/20.500.12110/paper_00044822_v53_n1_p117_Tomezzoli info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Rev. Asoc. Geol. Argent. 1998;53(1):117-129 faulting fold and thrust belt Argentina New evidence of the importance of faulting in the structure of the Sierras Australes de la Provincia de Buenos Aires info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00044822_v53_n1_p117_Tomezzoli_oai |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-145 |
| collection |
Repositorio Digital de la Universidad de Buenos Aires (UBA) |
| 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 https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00044822_v53_n1_p117_Tomezzoli_oai |
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AT tomezzolirn newevidenceoftheimportanceoffaultinginthestructureofthesierrasaustralesdelaprovinciadebuenosaires |
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1809356944429809664 |