Early Paleozoic orogenic belt of the Andes in southwestern South America: result of Laurentia-Gondwana collision?

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The late Precambrian to early Paleozoic age rock units of the Pampean ranges, the Puna, and the North Patagonian massif of southwestern South America constitute the Famatinian orogenic belt. They are interpreted as an Ordovician collisional belt between the Occidentalia terrane and the Gondwana crat...

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Autores principales: Dalla Salda, Luis Hugo, Cingolani, Carlos Alberto, Varela, Ricardo
Formato: Articulo
Lenguaje:Inglés
Publicado: 1992
Materias:
Geología
Early Paleozoic
South America
Ordovician collisional belt
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/137526
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-137526
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Geología
Early Paleozoic
South America
Ordovician collisional belt
spellingShingle Geología
Early Paleozoic
South America
Ordovician collisional belt
Dalla Salda, Luis Hugo
Cingolani, Carlos Alberto
Varela, Ricardo
Early Paleozoic orogenic belt of the Andes in southwestern South America: result of Laurentia-Gondwana collision?
topic_facet Geología
Early Paleozoic
South America
Ordovician collisional belt
description The late Precambrian to early Paleozoic age rock units of the Pampean ranges, the Puna, and the North Patagonian massif of southwestern South America constitute the Famatinian orogenic belt. They are interpreted as an Ordovician collisional belt between the Occidentalia terrane and the Gondwana craton. They include mafic and ultramafic belts of Neoproterozoic to early Paleozoic age. An intense tectonothermal event resulted from the collision; syntectonic granitoids represent crustal melting. In that collision syntectonic to late-tectonic foreland basins developed. The recently proposed juxtaposition of Laurentia and East Antarctica-Australia in the Neoproterozoic raises the possibility that Laurentia and western South America were close together in the early Paleozoic, and therefore that the Famatinian belt resulted from Laurentia-Gondwana collision. Occidentalia, which is bordered by a Cambrian carbonate platform similar to that of eastern North America, may be a sliver detached from Laurentia during Late Ordovician time.
format Articulo
Articulo
author Dalla Salda, Luis Hugo
Cingolani, Carlos Alberto
Varela, Ricardo
author_facet Dalla Salda, Luis Hugo
Cingolani, Carlos Alberto
Varela, Ricardo
author_sort Dalla Salda, Luis Hugo
title Early Paleozoic orogenic belt of the Andes in southwestern South America: result of Laurentia-Gondwana collision?
title_short Early Paleozoic orogenic belt of the Andes in southwestern South America: result of Laurentia-Gondwana collision?
title_full Early Paleozoic orogenic belt of the Andes in southwestern South America: result of Laurentia-Gondwana collision?
title_fullStr Early Paleozoic orogenic belt of the Andes in southwestern South America: result of Laurentia-Gondwana collision?
title_full_unstemmed Early Paleozoic orogenic belt of the Andes in southwestern South America: result of Laurentia-Gondwana collision?
title_sort early paleozoic orogenic belt of the andes in southwestern south america: result of laurentia-gondwana collision?
publishDate 1992
url http://sedici.unlp.edu.ar/handle/10915/137526
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