Contemporaneous assembly of Western Gondwana and final Rodinia break-up: Implications for the supercontinent cycle
Geological, geochronological and isotopic data are integrated in order to present a revised model for the Neoproterozoic evolution of Western Gondwana. Although the classical geodynamic scenario assumed for the period 800e700 Ma is related to Rodinia break-up and the consequent opening of major ocea...
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ftsubgoettingen:oai:goescholar:1/14809 2023-05-15T13:44:06+02:00 Contemporaneous assembly of Western Gondwana and final Rodinia break-up: Implications for the supercontinent cycle Oriolo, Sebastián Oyhantçabal, Pedro Wemmer, Klaus Siegesmund, Siegfried 2017 http://resolver.sub.uni-goettingen.de/purl?gs-1/14809 https://doi.org/10.1016/j.gsf.2017.01.009 eng eng 1674-9871 16749871 http://resolver.sub.uni-goettingen.de/purl?gs-1/14809 doi:10.1016/j.gsf.2017.01.009 openAccess Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ CC-BY-NC-ND Brasiliano-Pan-African Orogeny Neoproterozoic Collisional tectonics Pannotia Metacratonization Introversion-extroversion 550 journalArticle publishedVersion 2017 ftsubgoettingen https://doi.org/10.1016/j.gsf.2017.01.009 2022-11-02T09:29:00Z Geological, geochronological and isotopic data are integrated in order to present a revised model for the Neoproterozoic evolution of Western Gondwana. Although the classical geodynamic scenario assumed for the period 800e700 Ma is related to Rodinia break-up and the consequent opening of major oceanic basins, a significantly different tectonic evolution can be inferred for most Western Gondwana cratons. These cratons occupied a marginal position in the southern hemisphere with respect to Rodinia and recorded subduction with back-arc extension, island arc development and limited formation of oceanic crust in internal oceans. This period was thus characterized by increased crustal growth in Western Gondwana, resulting from addition of juvenile continental crust along convergent margins. In contrast, crustal reworking and metacratonization were dominant during the subsequent assembly of Gondwana. The Río de la Plata, Congo-São Francisco, West African and Amazonian cratons collided at ca. 630 e600 Ma along the West Gondwana Orogen. These events overlap in time with the onset of the opening of the Iapetus Ocean at ca. 610e600 Ma, which gave rise to the separation of Baltica, Laurentia and Amazonia and resulted from the final Rodinia break-up. The East African/Antarctic Orogen recorded the subsequent amalgamation of Western and Eastern Gondwana after ca. 580 Ma, contemporaneously with the beginning of subduction in the Terra Australis Orogen along the southern Gondwana margin. However, the Kalahari Craton was lately incorporated during the Late EdiacaraneEarly Cambrian. The proposed Gondwana evolution rules out the existence of Pannotia, as the final Gondwana amalgamation postdates latest connections between Laurentia and Amazonia. Additionally, a combination of introversion and extroversion is proposed for the assembly of Gondwana. The contemporaneous record of final Rodinia break-up and Gondwana assembly has major implications for the supercontinent cycle, as supercontinent amalgamation and break-up do not ... Article in Journal/Newspaper Antarc* Antarctic Georg-August-Universität Göttingen: GoeScholar Antarctic Terra Australis ENVELOPE(-62.900,-62.900,-64.900,-64.900) Geoscience Frontiers 8 6 1431 1445 |
institution |
Open Polar |
collection |
Georg-August-Universität Göttingen: GoeScholar |
op_collection_id |
ftsubgoettingen |
language |
English |
topic |
Brasiliano-Pan-African Orogeny Neoproterozoic Collisional tectonics Pannotia Metacratonization Introversion-extroversion 550 |
spellingShingle |
Brasiliano-Pan-African Orogeny Neoproterozoic Collisional tectonics Pannotia Metacratonization Introversion-extroversion 550 Oriolo, Sebastián Oyhantçabal, Pedro Wemmer, Klaus Siegesmund, Siegfried Contemporaneous assembly of Western Gondwana and final Rodinia break-up: Implications for the supercontinent cycle |
topic_facet |
Brasiliano-Pan-African Orogeny Neoproterozoic Collisional tectonics Pannotia Metacratonization Introversion-extroversion 550 |
description |
Geological, geochronological and isotopic data are integrated in order to present a revised model for the Neoproterozoic evolution of Western Gondwana. Although the classical geodynamic scenario assumed for the period 800e700 Ma is related to Rodinia break-up and the consequent opening of major oceanic basins, a significantly different tectonic evolution can be inferred for most Western Gondwana cratons. These cratons occupied a marginal position in the southern hemisphere with respect to Rodinia and recorded subduction with back-arc extension, island arc development and limited formation of oceanic crust in internal oceans. This period was thus characterized by increased crustal growth in Western Gondwana, resulting from addition of juvenile continental crust along convergent margins. In contrast, crustal reworking and metacratonization were dominant during the subsequent assembly of Gondwana. The Río de la Plata, Congo-São Francisco, West African and Amazonian cratons collided at ca. 630 e600 Ma along the West Gondwana Orogen. These events overlap in time with the onset of the opening of the Iapetus Ocean at ca. 610e600 Ma, which gave rise to the separation of Baltica, Laurentia and Amazonia and resulted from the final Rodinia break-up. The East African/Antarctic Orogen recorded the subsequent amalgamation of Western and Eastern Gondwana after ca. 580 Ma, contemporaneously with the beginning of subduction in the Terra Australis Orogen along the southern Gondwana margin. However, the Kalahari Craton was lately incorporated during the Late EdiacaraneEarly Cambrian. The proposed Gondwana evolution rules out the existence of Pannotia, as the final Gondwana amalgamation postdates latest connections between Laurentia and Amazonia. Additionally, a combination of introversion and extroversion is proposed for the assembly of Gondwana. The contemporaneous record of final Rodinia break-up and Gondwana assembly has major implications for the supercontinent cycle, as supercontinent amalgamation and break-up do not ... |
format |
Article in Journal/Newspaper |
author |
Oriolo, Sebastián Oyhantçabal, Pedro Wemmer, Klaus Siegesmund, Siegfried |
author_facet |
Oriolo, Sebastián Oyhantçabal, Pedro Wemmer, Klaus Siegesmund, Siegfried |
author_sort |
Oriolo, Sebastián |
title |
Contemporaneous assembly of Western Gondwana and final Rodinia break-up: Implications for the supercontinent cycle |
title_short |
Contemporaneous assembly of Western Gondwana and final Rodinia break-up: Implications for the supercontinent cycle |
title_full |
Contemporaneous assembly of Western Gondwana and final Rodinia break-up: Implications for the supercontinent cycle |
title_fullStr |
Contemporaneous assembly of Western Gondwana and final Rodinia break-up: Implications for the supercontinent cycle |
title_full_unstemmed |
Contemporaneous assembly of Western Gondwana and final Rodinia break-up: Implications for the supercontinent cycle |
title_sort |
contemporaneous assembly of western gondwana and final rodinia break-up: implications for the supercontinent cycle |
publishDate |
2017 |
url |
http://resolver.sub.uni-goettingen.de/purl?gs-1/14809 https://doi.org/10.1016/j.gsf.2017.01.009 |
long_lat |
ENVELOPE(-62.900,-62.900,-64.900,-64.900) |
geographic |
Antarctic Terra Australis |
geographic_facet |
Antarctic Terra Australis |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
1674-9871 16749871 http://resolver.sub.uni-goettingen.de/purl?gs-1/14809 doi:10.1016/j.gsf.2017.01.009 |
op_rights |
openAccess Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.gsf.2017.01.009 |
container_title |
Geoscience Frontiers |
container_volume |
8 |
container_issue |
6 |
container_start_page |
1431 |
op_container_end_page |
1445 |
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1766197763772514304 |