The metamorphic complexes of the Patagonian and Fuegian Andes
The Patagonian and Fuegian Andes are made up in part by late Paleozoic to Mesozoic metamorphic complexes. The mostly low grade late Paleozoic Eastern Andes Metamorphic Complex (EAMC) crops out to the East of the Meso-Cenozoic South Patagonian batholith (SPB), which intruded the metamorphic complexes...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Universitat de Barcelona
2008
|
Subjects: | |
Online Access: | http://www.raco.cat/index.php/GeologicaActa/article/view/83443 |
id |
ftraco:oai:raco.cat:article/83443 |
---|---|
record_format |
openpolar |
spelling |
ftraco:oai:raco.cat:article/83443 2023-05-15T13:32:59+02:00 The metamorphic complexes of the Patagonian and Fuegian Andes F. Hervé M. Calderón V. Faúndez 2008-03-26 application/pdf http://www.raco.cat/index.php/GeologicaActa/article/view/83443 eng eng Universitat de Barcelona Tots els documents inclosos a RACO són d'accés lliure i propietat dels seus autors i/o institucions editores, i per tant, qualsevol acte de reproducció, comercialització, comunicació pública o transformació total o parcial necessita el consentiment exprés i escrit d'aquests. Geologica Acta; Vol.: 6 Núm.: 1 Peer-reviewed Article 2008 ftraco 2008-05-18T18:21:01Z The Patagonian and Fuegian Andes are made up in part by late Paleozoic to Mesozoic metamorphic complexes. The mostly low grade late Paleozoic Eastern Andes Metamorphic Complex (EAMC) crops out to the East of the Meso-Cenozoic South Patagonian batholith (SPB), which intruded the metamorphic complexes. The protholit of the EAMC was likely deposited in a passive margin setting and at the Puerto Edén area underwent Late Jurassic sillimanite grade and migmatite local metamorphic conditions. It is suspected, but not proven, that the Cordillera Darwin Metamorphic Complex is a higher grade metamorphic complex equivalent of the EAMC. West of the SPB, paleo subduction complexes occur and are represented by the allochtonous Madre de Dios terrane. This terrane is composed of the ocean floor lithologies of the Denaro Complex topped by the Tarlton limestones that represent a guyot assemblage. The low grade continent derived Duque de York complex was deposited down top of the ocean floor lithologies. Further west, the blueschist bearing Middle Jurassic Diego de Almagro Complex, with psammopelitic, mafic and siliceous volcanic rock protoliths, evolved deep in a subduction zone during the Cretaceous. The possibility that the Antarctic Peninsula was located west of the present margin of South America is discussed. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula RACO: Revistes Catalanes amb Accés Obert Antarctic Antarctic Peninsula Edén ENVELOPE(-63.221,-63.221,-66.207,-66.207) The Antarctic |
institution |
Open Polar |
collection |
RACO: Revistes Catalanes amb Accés Obert |
op_collection_id |
ftraco |
language |
English |
description |
The Patagonian and Fuegian Andes are made up in part by late Paleozoic to Mesozoic metamorphic complexes. The mostly low grade late Paleozoic Eastern Andes Metamorphic Complex (EAMC) crops out to the East of the Meso-Cenozoic South Patagonian batholith (SPB), which intruded the metamorphic complexes. The protholit of the EAMC was likely deposited in a passive margin setting and at the Puerto Edén area underwent Late Jurassic sillimanite grade and migmatite local metamorphic conditions. It is suspected, but not proven, that the Cordillera Darwin Metamorphic Complex is a higher grade metamorphic complex equivalent of the EAMC. West of the SPB, paleo subduction complexes occur and are represented by the allochtonous Madre de Dios terrane. This terrane is composed of the ocean floor lithologies of the Denaro Complex topped by the Tarlton limestones that represent a guyot assemblage. The low grade continent derived Duque de York complex was deposited down top of the ocean floor lithologies. Further west, the blueschist bearing Middle Jurassic Diego de Almagro Complex, with psammopelitic, mafic and siliceous volcanic rock protoliths, evolved deep in a subduction zone during the Cretaceous. The possibility that the Antarctic Peninsula was located west of the present margin of South America is discussed. |
format |
Article in Journal/Newspaper |
author |
F. Hervé M. Calderón V. Faúndez |
spellingShingle |
F. Hervé M. Calderón V. Faúndez The metamorphic complexes of the Patagonian and Fuegian Andes |
author_facet |
F. Hervé M. Calderón V. Faúndez |
author_sort |
F. Hervé |
title |
The metamorphic complexes of the Patagonian and Fuegian Andes |
title_short |
The metamorphic complexes of the Patagonian and Fuegian Andes |
title_full |
The metamorphic complexes of the Patagonian and Fuegian Andes |
title_fullStr |
The metamorphic complexes of the Patagonian and Fuegian Andes |
title_full_unstemmed |
The metamorphic complexes of the Patagonian and Fuegian Andes |
title_sort |
metamorphic complexes of the patagonian and fuegian andes |
publisher |
Universitat de Barcelona |
publishDate |
2008 |
url |
http://www.raco.cat/index.php/GeologicaActa/article/view/83443 |
long_lat |
ENVELOPE(-63.221,-63.221,-66.207,-66.207) |
geographic |
Antarctic Antarctic Peninsula Edén The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Edén The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_source |
Geologica Acta; Vol.: 6 Núm.: 1 |
op_rights |
Tots els documents inclosos a RACO són d'accés lliure i propietat dels seus autors i/o institucions editores, i per tant, qualsevol acte de reproducció, comercialització, comunicació pública o transformació total o parcial necessita el consentiment exprés i escrit d'aquests. |
_version_ |
1766037442184347648 |