The Grenville-age basement of the Andes

The analysis of the basement of the Andes shows the strong Grenville affinities of most of the inliers exposed in the different terranes from Colombia to Patagonia. The terranes have different histories, but most of them participated in the Rodinia supercontinent amalgamation during the Mesoproteroz...

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Autor principal:	Ramos, V.A.
Formato:	JOUR
Materias:	Arequipa Chilenia Cuyania Grenville Oaxaquia Patagonia basement rock Cambrian Gondwana inlier Laurentia Ordovician Paleozoic Phanerozoic plate motion Proterozoic Rodinia terrane Andes Canada Colombia Grenville Province
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_08959811_v29_n1_p77_Ramos
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_08959811_v29_n1_p77_Ramos
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spelling	todo:paper_08959811_v29_n1_p77_Ramos2023-10-03T15:42:52Z The Grenville-age basement of the Andes Ramos, V.A. Arequipa Chilenia Cuyania Grenville Oaxaquia Patagonia basement rock Cambrian Gondwana inlier Laurentia Ordovician Paleozoic Phanerozoic plate motion Proterozoic Rodinia terrane Andes Canada Colombia Grenville Province Patagonia The analysis of the basement of the Andes shows the strong Grenville affinities of most of the inliers exposed in the different terranes from Colombia to Patagonia. The terranes have different histories, but most of them participated in the Rodinia supercontinent amalgamation during the Mesoproterozoic between 1200 and 1000 Ma. After Rodinia break-up some terranes were left in the Laurentian side such as Cuyania and Chilenia, while others stayed in the Gondwanan side. Some of the terranes once collided with the Amazon craton remained attached, experiencing diverse rifting episodes all along the Phanerozoic, as the Arequipa and Pampia terranes. Some other basement inliers were detached in the Neoproterozoic and amalgamated again to Gondwana in the Early Cambrian, Middle Ordovician or Permian times. A few basement inliers with Permian metamorphic ages were transferred to Gondwana after Pangea break-up from the Laurentian side. Some of them were part of the present Middle America terrane. An exceptional case is the Oaxaquia terrane that was detached from the Gondwana margin after the Early Ordovician and is now one of the main Mexican terranes that collided with Laurentia. These displacements, detachments, and amalgamations indicate a complex terrane transfer between Laurentia and Gondwana during Paleozoic times, following plate reorganizations and changes in the absolute motion of Gondwana. © 2009 Elsevier Ltd. All rights reserved. Fil:Ramos, V.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08959811_v29_n1_p77_Ramos
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Arequipa Chilenia Cuyania Grenville Oaxaquia Patagonia basement rock Cambrian Gondwana inlier Laurentia Ordovician Paleozoic Phanerozoic plate motion Proterozoic Rodinia terrane Andes Canada Colombia Grenville Province Patagonia
spellingShingle	Arequipa Chilenia Cuyania Grenville Oaxaquia Patagonia basement rock Cambrian Gondwana inlier Laurentia Ordovician Paleozoic Phanerozoic plate motion Proterozoic Rodinia terrane Andes Canada Colombia Grenville Province Patagonia Ramos, V.A. The Grenville-age basement of the Andes
topic_facet	Arequipa Chilenia Cuyania Grenville Oaxaquia Patagonia basement rock Cambrian Gondwana inlier Laurentia Ordovician Paleozoic Phanerozoic plate motion Proterozoic Rodinia terrane Andes Canada Colombia Grenville Province Patagonia
description	The analysis of the basement of the Andes shows the strong Grenville affinities of most of the inliers exposed in the different terranes from Colombia to Patagonia. The terranes have different histories, but most of them participated in the Rodinia supercontinent amalgamation during the Mesoproterozoic between 1200 and 1000 Ma. After Rodinia break-up some terranes were left in the Laurentian side such as Cuyania and Chilenia, while others stayed in the Gondwanan side. Some of the terranes once collided with the Amazon craton remained attached, experiencing diverse rifting episodes all along the Phanerozoic, as the Arequipa and Pampia terranes. Some other basement inliers were detached in the Neoproterozoic and amalgamated again to Gondwana in the Early Cambrian, Middle Ordovician or Permian times. A few basement inliers with Permian metamorphic ages were transferred to Gondwana after Pangea break-up from the Laurentian side. Some of them were part of the present Middle America terrane. An exceptional case is the Oaxaquia terrane that was detached from the Gondwana margin after the Early Ordovician and is now one of the main Mexican terranes that collided with Laurentia. These displacements, detachments, and amalgamations indicate a complex terrane transfer between Laurentia and Gondwana during Paleozoic times, following plate reorganizations and changes in the absolute motion of Gondwana. © 2009 Elsevier Ltd. All rights reserved.
format	JOUR
author	Ramos, V.A.
author_facet	Ramos, V.A.
author_sort	Ramos, V.A.
title	The Grenville-age basement of the Andes
title_short	The Grenville-age basement of the Andes
title_full	The Grenville-age basement of the Andes
title_fullStr	The Grenville-age basement of the Andes
title_full_unstemmed	The Grenville-age basement of the Andes
title_sort	grenville-age basement of the andes
url	http://hdl.handle.net/20.500.12110/paper_08959811_v29_n1_p77_Ramos
work_keys_str_mv	AT ramosva thegrenvilleagebasementoftheandes AT ramosva grenvilleagebasementoftheandes
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The Grenville-age basement of the Andes

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