Quaternary deformation associated with the eastern uplift front of the Sierras de Velasco and Ambato, western Sierras Pampeanas

Along the eastern front of the Sierra de Velasco and at the southern end of the Sierra de Ambato, western Sierras Pampeanas, have been found new evidences of Quaternary tectonic activity near La Rioja city. Observed evidences correspond to different reactivated sections of the faults that bound the...

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Autores principales:	Casa, Analía Laura, Yamin, Marcela G., Cegarra, Marcelo Ignacio, Coppolecchia, Mariana
Publicado:	2010
Materias:	Ambato range Neotectonics Quaternary Sierras pampeanas Velasco range compression deformation neotectonics piedmont reverse fault structural geology uplift Ambato Argentina Catamarca Sierras Pampeanas
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v67_n4_p425_Casa http://hdl.handle.net/20.500.12110/paper_00044822_v67_n4_p425_Casa
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00044822_v67_n4_p425_Casa
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spelling	paper:paper_00044822_v67_n4_p425_Casa2023-06-08T14:26:30Z Quaternary deformation associated with the eastern uplift front of the Sierras de Velasco and Ambato, western Sierras Pampeanas Casa, Analía Laura Yamin, Marcela G. Cegarra, Marcelo Ignacio Coppolecchia, Mariana Ambato range Neotectonics Quaternary Sierras pampeanas Velasco range compression deformation neotectonics piedmont Quaternary reverse fault structural geology uplift Ambato Argentina Catamarca Sierras Pampeanas Along the eastern front of the Sierra de Velasco and at the southern end of the Sierra de Ambato, western Sierras Pampeanas, have been found new evidences of Quaternary tectonic activity near La Rioja city. Observed evidences correspond to different reactivated sections of the faults that bound the mountain fronts, as well as to structures affecting the Quaternary deposits on the piedmont. The bounding faults of the Sierra de Velasco Oriental-front exhibit a NNE trend and WNW dip, while structures at the southernmost Ambato range are characterized by NE trend and NW dip. The neotectonic faults of the El Carrizal block are the result of the interference of both structural trends, resulting in a sector with higher structural complexity. The here described deformation show the persistence of a compressive regime during the Quaternary, with eastern to southeastern verging reverse faults. It is considering that these faults are driving the current uplift of the mountain ranges and constitute potential earthquake sources. Fil:Casa, A.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Yamin, M.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cegarra, M.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Coppolecchia, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v67_n4_p425_Casa http://hdl.handle.net/20.500.12110/paper_00044822_v67_n4_p425_Casa
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Ambato range Neotectonics Quaternary Sierras pampeanas Velasco range compression deformation neotectonics piedmont Quaternary reverse fault structural geology uplift Ambato Argentina Catamarca Sierras Pampeanas
spellingShingle	Ambato range Neotectonics Quaternary Sierras pampeanas Velasco range compression deformation neotectonics piedmont Quaternary reverse fault structural geology uplift Ambato Argentina Catamarca Sierras Pampeanas Casa, Analía Laura Yamin, Marcela G. Cegarra, Marcelo Ignacio Coppolecchia, Mariana Quaternary deformation associated with the eastern uplift front of the Sierras de Velasco and Ambato, western Sierras Pampeanas
topic_facet	Ambato range Neotectonics Quaternary Sierras pampeanas Velasco range compression deformation neotectonics piedmont Quaternary reverse fault structural geology uplift Ambato Argentina Catamarca Sierras Pampeanas
description	Along the eastern front of the Sierra de Velasco and at the southern end of the Sierra de Ambato, western Sierras Pampeanas, have been found new evidences of Quaternary tectonic activity near La Rioja city. Observed evidences correspond to different reactivated sections of the faults that bound the mountain fronts, as well as to structures affecting the Quaternary deposits on the piedmont. The bounding faults of the Sierra de Velasco Oriental-front exhibit a NNE trend and WNW dip, while structures at the southernmost Ambato range are characterized by NE trend and NW dip. The neotectonic faults of the El Carrizal block are the result of the interference of both structural trends, resulting in a sector with higher structural complexity. The here described deformation show the persistence of a compressive regime during the Quaternary, with eastern to southeastern verging reverse faults. It is considering that these faults are driving the current uplift of the mountain ranges and constitute potential earthquake sources.
author	Casa, Analía Laura Yamin, Marcela G. Cegarra, Marcelo Ignacio Coppolecchia, Mariana
author_facet	Casa, Analía Laura Yamin, Marcela G. Cegarra, Marcelo Ignacio Coppolecchia, Mariana
author_sort	Casa, Analía Laura
title	Quaternary deformation associated with the eastern uplift front of the Sierras de Velasco and Ambato, western Sierras Pampeanas
title_short	Quaternary deformation associated with the eastern uplift front of the Sierras de Velasco and Ambato, western Sierras Pampeanas
title_full	Quaternary deformation associated with the eastern uplift front of the Sierras de Velasco and Ambato, western Sierras Pampeanas
title_fullStr	Quaternary deformation associated with the eastern uplift front of the Sierras de Velasco and Ambato, western Sierras Pampeanas
title_full_unstemmed	Quaternary deformation associated with the eastern uplift front of the Sierras de Velasco and Ambato, western Sierras Pampeanas
title_sort	quaternary deformation associated with the eastern uplift front of the sierras de velasco and ambato, western sierras pampeanas
publishDate	2010
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v67_n4_p425_Casa http://hdl.handle.net/20.500.12110/paper_00044822_v67_n4_p425_Casa
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Quaternary deformation associated with the eastern uplift front of the Sierras de Velasco and Ambato, western Sierras Pampeanas

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