Neoproterozoic A-type magmatism in the Western Sierras Pampeanas (Argentina): evidence for Rodinia break-up along a proto-Iapetus rift?

A-type orthogneisses of mid Neoproterozoic age (774 ± 6 Ma, U-Pb SHRIMP zircon age), are reported for the first time from the Grenvillian basement of the Western Sierras Pampeanas in Argentina. These anorogenic meta-igneous rocks represent the latest event of Rodinia break-up so far recognized in Gr...

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Detalles Bibliográficos
Autores principales: Baldo, Edgardo G., Casquet, César, Pankhurst, Robert J., Galindo, Carmen, Rapela, Carlos Washington, Fanning, Christopher, Dahlquist, Juan A., Murra, Juan A.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2006
Materias:
Geología
A-type orthogneisses
Neoproterozoic age
Rodinia break-up
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/128576
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-128576
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Geología
A-type orthogneisses
Neoproterozoic age
Rodinia break-up
spellingShingle Geología
A-type orthogneisses
Neoproterozoic age
Rodinia break-up
Baldo, Edgardo G.
Casquet, César
Pankhurst, Robert J.
Galindo, Carmen
Rapela, Carlos Washington
Fanning, Christopher
Dahlquist, Juan A.
Murra, Juan A.
Neoproterozoic A-type magmatism in the Western Sierras Pampeanas (Argentina): evidence for Rodinia break-up along a proto-Iapetus rift?
topic_facet Geología
A-type orthogneisses
Neoproterozoic age
Rodinia break-up
description A-type orthogneisses of mid Neoproterozoic age (774 ± 6 Ma, U-Pb SHRIMP zircon age), are reported for the first time from the Grenvillian basement of the Western Sierras Pampeanas in Argentina. These anorogenic meta-igneous rocks represent the latest event of Rodinia break-up so far recognized in Grenvillian basement exposures across Andean South America. Moreover, they compare well with A-type granitoids and volcanic rocks along the Appalachian margin of Laurentia (Blue Ridge), thus adding to former evidence that the Western Sierras Pampeanas Grenvillian basement was left on the conjugate rifted margin of eastern Laurentia during Rodinia break-up and the consequent opening of the Iapetus ocean.
format Articulo
Articulo
author Baldo, Edgardo G.
Casquet, César
Pankhurst, Robert J.
Galindo, Carmen
Rapela, Carlos Washington
Fanning, Christopher
Dahlquist, Juan A.
Murra, Juan A.
author_facet Baldo, Edgardo G.
Casquet, César
Pankhurst, Robert J.
Galindo, Carmen
Rapela, Carlos Washington
Fanning, Christopher
Dahlquist, Juan A.
Murra, Juan A.
author_sort Baldo, Edgardo G.
title Neoproterozoic A-type magmatism in the Western Sierras Pampeanas (Argentina): evidence for Rodinia break-up along a proto-Iapetus rift?
title_short Neoproterozoic A-type magmatism in the Western Sierras Pampeanas (Argentina): evidence for Rodinia break-up along a proto-Iapetus rift?
title_full Neoproterozoic A-type magmatism in the Western Sierras Pampeanas (Argentina): evidence for Rodinia break-up along a proto-Iapetus rift?
title_fullStr Neoproterozoic A-type magmatism in the Western Sierras Pampeanas (Argentina): evidence for Rodinia break-up along a proto-Iapetus rift?
title_full_unstemmed Neoproterozoic A-type magmatism in the Western Sierras Pampeanas (Argentina): evidence for Rodinia break-up along a proto-Iapetus rift?
title_sort neoproterozoic a-type magmatism in the western sierras pampeanas (argentina): evidence for rodinia break-up along a proto-iapetus rift?
publishDate 2006
url http://sedici.unlp.edu.ar/handle/10915/128576
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