Pre-Carboniferous Tectonic Evolution of the San Rafael Block, Mendoza Province

The pre-Carboniferous evolution of the San Rafael Block is described in different stages. The first one is referred to the Mesoproterozoic basement derived from a complex plutonic and volcanic protolith of Cerro La Ventana Formation. The signature of this basement indicates a common origin with the...

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Autores principales: Cingolani, Carlos Alberto, Ramos, Víctor Alberto
Formato: Libro Capitulo de libro
Lenguaje:Inglés
Publicado: Springer 2017
Materias:
Geología
Cuyania terrane
Famatinian collision
Chanic phase
Chilenia terrane
Proto-Andean margin
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/156763
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SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-156763
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spelling I19-R120-10915-1567632023-08-24T04:06:47Z http://sedici.unlp.edu.ar/handle/10915/156763 Pre-Carboniferous Tectonic Evolution of the San Rafael Block, Mendoza Province Cingolani, Carlos Alberto Ramos, Víctor Alberto 2017 2023-08-23T18:43:04Z Cingolani, Carlos Alberto Springer en Geología Cuyania terrane Famatinian collision Chanic phase Chilenia terrane Proto-Andean margin The pre-Carboniferous evolution of the San Rafael Block is described in different stages. The first one is referred to the Mesoproterozoic basement derived from a complex plutonic and volcanic protolith of Cerro La Ventana Formation. The signature of this basement indicates a common origin with the present eastern part of Laurentia. The carbonate platform of Cuyania terrane has been drifted away during Early Cambrian to Early Ordovician times. The Ordovician silico-carbonate sequences of the San Rafael Block are unconformably deposited over the basement near the present eastern slope of the Cuyania terrane. Detrital zircon ages show a provenance derived from Mesoproterozoic source. The El Nihuil dolerites with a tholeiitic ocean floor signature considered the southern end of the Famatinian ophiolites were interpreted as a Late Ordovician–Early Silurian extensional event. The collision of Cuyania produced a new west polarity subduction and a magmatic arc, represented by the Devonian Rodeo de la Bordalesa tonalite and the granitoids of the “Agua Escondida Mining District”. The Late Silurian–Early Devonian sequences of La Horqueta and Río Seco de los Castaños formations were deformed during the collision and accretion of the Chilenia terrane against the proto-Andean margin, and recorded an east vergent cleavage developed on the previous deformed rocks. This collision produced the strong angular unconformity between the La Horqueta/Río Seco de los Castaños Formations and the El Imperial Formation (Upper Paleozoic). The new subduction with east polarity characterized the beginning of the Gondwanian cycle. The new magmatic arc was interrupted by the intense Lower Permian deformation of the San Rafael tectonic phase. Centro de Investigaciones Geológicas Universidad de Buenos Aires Libro Capitulo de libro http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 239-255
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Geología
Cuyania terrane
Famatinian collision
Chanic phase
Chilenia terrane
Proto-Andean margin
spellingShingle Geología
Cuyania terrane
Famatinian collision
Chanic phase
Chilenia terrane
Proto-Andean margin
Cingolani, Carlos Alberto
Ramos, Víctor Alberto
Cingolani, Carlos Alberto
Pre-Carboniferous Tectonic Evolution of the San Rafael Block, Mendoza Province
topic_facet Geología
Cuyania terrane
Famatinian collision
Chanic phase
Chilenia terrane
Proto-Andean margin
description The pre-Carboniferous evolution of the San Rafael Block is described in different stages. The first one is referred to the Mesoproterozoic basement derived from a complex plutonic and volcanic protolith of Cerro La Ventana Formation. The signature of this basement indicates a common origin with the present eastern part of Laurentia. The carbonate platform of Cuyania terrane has been drifted away during Early Cambrian to Early Ordovician times. The Ordovician silico-carbonate sequences of the San Rafael Block are unconformably deposited over the basement near the present eastern slope of the Cuyania terrane. Detrital zircon ages show a provenance derived from Mesoproterozoic source. The El Nihuil dolerites with a tholeiitic ocean floor signature considered the southern end of the Famatinian ophiolites were interpreted as a Late Ordovician–Early Silurian extensional event. The collision of Cuyania produced a new west polarity subduction and a magmatic arc, represented by the Devonian Rodeo de la Bordalesa tonalite and the granitoids of the “Agua Escondida Mining District”. The Late Silurian–Early Devonian sequences of La Horqueta and Río Seco de los Castaños formations were deformed during the collision and accretion of the Chilenia terrane against the proto-Andean margin, and recorded an east vergent cleavage developed on the previous deformed rocks. This collision produced the strong angular unconformity between the La Horqueta/Río Seco de los Castaños Formations and the El Imperial Formation (Upper Paleozoic). The new subduction with east polarity characterized the beginning of the Gondwanian cycle. The new magmatic arc was interrupted by the intense Lower Permian deformation of the San Rafael tectonic phase.
format Libro
Capitulo de libro
author Cingolani, Carlos Alberto
Ramos, Víctor Alberto
Cingolani, Carlos Alberto
author_facet Cingolani, Carlos Alberto
Ramos, Víctor Alberto
Cingolani, Carlos Alberto
author_sort Cingolani, Carlos Alberto
title Pre-Carboniferous Tectonic Evolution of the San Rafael Block, Mendoza Province
title_short Pre-Carboniferous Tectonic Evolution of the San Rafael Block, Mendoza Province
title_full Pre-Carboniferous Tectonic Evolution of the San Rafael Block, Mendoza Province
title_fullStr Pre-Carboniferous Tectonic Evolution of the San Rafael Block, Mendoza Province
title_full_unstemmed Pre-Carboniferous Tectonic Evolution of the San Rafael Block, Mendoza Province
title_sort pre-carboniferous tectonic evolution of the san rafael block, mendoza province
publisher Springer
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/156763
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AT ramosvictoralberto precarboniferoustectonicevolutionofthesanrafaelblockmendozaprovince
AT cingolanicarlosalberto precarboniferoustectonicevolutionofthesanrafaelblockmendozaprovince
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