Grenvillian basement and Famatinian events of the Sierra de Umango (29°s): a review and new geochronological data

The Sierra de Umango (29°()(),S-68°40'W) was interpreted as part of a northernmost Grenvillian-age rocks of Laurentian-derived terrane, accreted to the southwestern margin of Gondwana. The most important tectono-metamorphic and magmatic processes related to this collision occurred along the N-S...

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Autores principales: Varela, Ricardo, Stipp Basei, Miguel Angelo, Sato, Ana María, González, Pablo Diego, Siga Jr., O., Campos Neto, M. C., Cingolani, Carlos Alberto
Formato: Objeto de conferencia
Lenguaje:Inglés
Publicado: 2003
Materias:
Geología
Grenvillian basement
Middle Proterozoic
Lower Paleozoic
geochronology
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/164915
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-164915
record_format dspace
spelling I19-R120-10915-1649152024-04-17T04:07:51Z http://sedici.unlp.edu.ar/handle/10915/164915 Grenvillian basement and Famatinian events of the Sierra de Umango (29°s): a review and new geochronological data Varela, Ricardo Stipp Basei, Miguel Angelo Sato, Ana María González, Pablo Diego Siga Jr., O. Campos Neto, M. C. Cingolani, Carlos Alberto 2003 2003 2024-04-16T18:19:04Z en Geología Grenvillian basement Middle Proterozoic Lower Paleozoic geochronology The Sierra de Umango (29°()(),S-68°40'W) was interpreted as part of a northernmost Grenvillian-age rocks of Laurentian-derived terrane, accreted to the southwestern margin of Gondwana. The most important tectono-metamorphic and magmatic processes related to this collision occurred along the N-S trending Famatinian orogen since the Ordovician to Devonian (e.g. Dalla Salda et al., 1992, 1998; Ramos et al., 1998; Astini, 1998; Casquet et al., 2001), overprinting the magmatic and metamorphic rocks already affected by previous Grenvillian history. In this paper we present new U-Pb ages that extends the outcrops of Grenvillian rocks to the north of the well known localities with Mesoproterozoic rocks, and also constrain the age of the subsequent overprinting events. The new ages together with the already existing data, allow us to understand the geological evolution of the Sierra de Vmango in relation to the Lower Paleozoic Famatinian Orogeny. Centro de Investigaciones Geológicas Objeto de conferencia Objeto de conferencia 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 304-306
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Geología
Grenvillian basement
Middle Proterozoic
Lower Paleozoic
geochronology
spellingShingle Geología
Grenvillian basement
Middle Proterozoic
Lower Paleozoic
geochronology
Varela, Ricardo
Stipp Basei, Miguel Angelo
Sato, Ana María
González, Pablo Diego
Siga Jr., O.
Campos Neto, M. C.
Cingolani, Carlos Alberto
Grenvillian basement and Famatinian events of the Sierra de Umango (29°s): a review and new geochronological data
topic_facet Geología
Grenvillian basement
Middle Proterozoic
Lower Paleozoic
geochronology
description The Sierra de Umango (29°()(),S-68°40'W) was interpreted as part of a northernmost Grenvillian-age rocks of Laurentian-derived terrane, accreted to the southwestern margin of Gondwana. The most important tectono-metamorphic and magmatic processes related to this collision occurred along the N-S trending Famatinian orogen since the Ordovician to Devonian (e.g. Dalla Salda et al., 1992, 1998; Ramos et al., 1998; Astini, 1998; Casquet et al., 2001), overprinting the magmatic and metamorphic rocks already affected by previous Grenvillian history. In this paper we present new U-Pb ages that extends the outcrops of Grenvillian rocks to the north of the well known localities with Mesoproterozoic rocks, and also constrain the age of the subsequent overprinting events. The new ages together with the already existing data, allow us to understand the geological evolution of the Sierra de Vmango in relation to the Lower Paleozoic Famatinian Orogeny.
format Objeto de conferencia
Objeto de conferencia
author Varela, Ricardo
Stipp Basei, Miguel Angelo
Sato, Ana María
González, Pablo Diego
Siga Jr., O.
Campos Neto, M. C.
Cingolani, Carlos Alberto
author_facet Varela, Ricardo
Stipp Basei, Miguel Angelo
Sato, Ana María
González, Pablo Diego
Siga Jr., O.
Campos Neto, M. C.
Cingolani, Carlos Alberto
author_sort Varela, Ricardo
title Grenvillian basement and Famatinian events of the Sierra de Umango (29°s): a review and new geochronological data
title_short Grenvillian basement and Famatinian events of the Sierra de Umango (29°s): a review and new geochronological data
title_full Grenvillian basement and Famatinian events of the Sierra de Umango (29°s): a review and new geochronological data
title_fullStr Grenvillian basement and Famatinian events of the Sierra de Umango (29°s): a review and new geochronological data
title_full_unstemmed Grenvillian basement and Famatinian events of the Sierra de Umango (29°s): a review and new geochronological data
title_sort grenvillian basement and famatinian events of the sierra de umango (29°s): a review and new geochronological data
publishDate 2003
url http://sedici.unlp.edu.ar/handle/10915/164915
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