Structural control of the Copahue volcano. Tectonics implications for the Quaternary volcanic arc (36°-39°S)

The Copahue volcano situated in the Cordillera Principal(38° S, 71°W). is a volcanic centre of Quaternary age developed after the last westward migration of the volcanic front over an extensive volcanic plateau of Pliocene age. Its location is tectonically controlled at the edge of a transtensional...

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Detalles Bibliográficos
Publicado: 2000
Materias:
Argentine
Caldera
Copahue
Quaternary
Transtension
Volcanism
caldera
structural control
structural geology
tectonic setting
transtension
volcano
Argentina
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v55_n3_p229_Folguera
http://hdl.handle.net/20.500.12110/paper_00044822_v55_n3_p229_Folguera
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00044822_v55_n3_p229_Folguera
record_format dspace
spelling paper:paper_00044822_v55_n3_p229_Folguera2023-06-08T14:25:27Z Structural control of the Copahue volcano. Tectonics implications for the Quaternary volcanic arc (36°-39°S) Argentine Caldera Copahue Quaternary Transtension Volcanism caldera Quaternary structural control structural geology tectonic setting transtension volcano Argentina The Copahue volcano situated in the Cordillera Principal(38° S, 71°W). is a volcanic centre of Quaternary age developed after the last westward migration of the volcanic front over an extensive volcanic plateau of Pliocene age. Its location is tectonically controlled at the edge of a transtensional intra-arc basin, the Agrio Caldera, that was formed during the early Quaternary and is still active. This basin could have controlled a local strain field dominated by strike-slip displacements responsible for a small fold and thrust belt that deforms the Quaternary alluvial deposits next to the town of Copahue. This fold belt could also correspond to a transpressive flower structure associated with the Liquiñe-Ofqui fault system. The present Andean orogenic front at this latitude is 300 km away from the trench. The identification of this neotectonic front shows that the lithospheric tensional state at this latitude corresponds to a horizontal maximum stress. On this basis, a transtensional origin is proposed for the Agrio Caldera and related volcanism. 2000 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v55_n3_p229_Folguera http://hdl.handle.net/20.500.12110/paper_00044822_v55_n3_p229_Folguera
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Argentine
Caldera
Copahue
Quaternary
Transtension
Volcanism
caldera
Quaternary
structural control
structural geology
tectonic setting
transtension
volcano
Argentina
spellingShingle Argentine
Caldera
Copahue
Quaternary
Transtension
Volcanism
caldera
Quaternary
structural control
structural geology
tectonic setting
transtension
volcano
Argentina
Structural control of the Copahue volcano. Tectonics implications for the Quaternary volcanic arc (36°-39°S)
topic_facet Argentine
Caldera
Copahue
Quaternary
Transtension
Volcanism
caldera
Quaternary
structural control
structural geology
tectonic setting
transtension
volcano
Argentina
description The Copahue volcano situated in the Cordillera Principal(38° S, 71°W). is a volcanic centre of Quaternary age developed after the last westward migration of the volcanic front over an extensive volcanic plateau of Pliocene age. Its location is tectonically controlled at the edge of a transtensional intra-arc basin, the Agrio Caldera, that was formed during the early Quaternary and is still active. This basin could have controlled a local strain field dominated by strike-slip displacements responsible for a small fold and thrust belt that deforms the Quaternary alluvial deposits next to the town of Copahue. This fold belt could also correspond to a transpressive flower structure associated with the Liquiñe-Ofqui fault system. The present Andean orogenic front at this latitude is 300 km away from the trench. The identification of this neotectonic front shows that the lithospheric tensional state at this latitude corresponds to a horizontal maximum stress. On this basis, a transtensional origin is proposed for the Agrio Caldera and related volcanism.
title Structural control of the Copahue volcano. Tectonics implications for the Quaternary volcanic arc (36°-39°S)
title_short Structural control of the Copahue volcano. Tectonics implications for the Quaternary volcanic arc (36°-39°S)
title_full Structural control of the Copahue volcano. Tectonics implications for the Quaternary volcanic arc (36°-39°S)
title_fullStr Structural control of the Copahue volcano. Tectonics implications for the Quaternary volcanic arc (36°-39°S)
title_full_unstemmed Structural control of the Copahue volcano. Tectonics implications for the Quaternary volcanic arc (36°-39°S)
title_sort structural control of the copahue volcano. tectonics implications for the quaternary volcanic arc (36°-39°s)
publishDate 2000
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v55_n3_p229_Folguera
http://hdl.handle.net/20.500.12110/paper_00044822_v55_n3_p229_Folguera
_version_ 1768543304118435840

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