Episodic remagnetizations related to tectonic events and their consequences for the South America polar wander path
The South American record of remagnetizations is linked to specific events of its tectonic history stretching back to Precambrian times. At the Ediacaran-Cambrian time interval (570-500 Ma), the final stages of the western Gondwana assemblage led to remagnetization of Neoproterozoic carbonates withi...
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ftconicet:oai:ri.conicet.gov.ar:11336/68225 2023-10-09T21:55:56+02:00 Episodic remagnetizations related to tectonic events and their consequences for the South America polar wander path Font, E. Rapalini, Augusto Ernesto Tomezzoli, Renata Nela Trindade, R. I. F. Tovher, E. application/pdf http://hdl.handle.net/11336/68225 eng eng Geological Society Publications House info:eu-repo/semantics/altIdentifier/doi/10.1144/SP371.7 info:eu-repo/semantics/altIdentifier/url/http://sp.lyellcollection.org/content/371/1/55 http://hdl.handle.net/11336/68225 Font, E.; Rapalini, Augusto Ernesto; Tomezzoli, Renata Nela; Trindade, R. I. F.; Tovher, E. Episodic remagnetizations related to tectonic events and their consequences for the South America polar wander path; Geological Society Publications House; Geological Society of London Special Publication; 371; 1; 8-2012; 55-87 0305-8719 2041-4927 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ Paleogeografía Paleozoico Gondwana Paleomagnetismo https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1144/SP371.7 2023-09-24T19:05:08Z The South American record of remagnetizations is linked to specific events of its tectonic history stretching back to Precambrian times. At the Ediacaran-Cambrian time interval (570-500 Ma), the final stages of the western Gondwana assemblage led to remagnetization of Neoproterozoic carbonates within the São Francisco-Congo Craton and at the border of the Amazon Craton, along the Araguaia-Paraguay-Pampean Belt. From the late Permian to early Triassic, the San Rafaelic orogeny and the emplacement of the Choiyoi magmatic province was responsible for widespread remagnetizations in Argentina and Uruguay. Cretaceous remagnetization has also been documented in Brazil and interpreted to result from magmatism and fault reactivations linked to the opening of the South Atlantic Ocean. We present a review of these widespread remagnetization events principally based on palaeomagnetic data and, when available, on rock magnetic and radiogenic isotope age data. This study gives an overview of the geographical distribution of the remagnetization events in South America, and provides important clues to better understand the geodynamic evolution of the South American plate at these times. In addition, magnetic mineralogy data for the different case studies presented here constrain the physical-chemical mechanisms that led to partial or total resetting of magnetic remanences in sedimentary rocks. Fil: Font, E. Universidade de Lisboa. Faculdade de Ciências; Brasil Fil: Rapalini, Augusto Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Instituto de Geofísica "Daniel Valencio"; Argentina Fil: Tomezzoli, Renata Nela. Consejo ... Article in Journal/Newspaper South Atlantic Ocean CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Argentina Uruguay Augusto ENVELOPE(-61.613,-61.613,-64.054,-64.054) Nela ENVELOPE(35.277,35.277,63.715,63.715) Geological Society, London, Special Publications 371 1 55 87 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
Paleogeografía Paleozoico Gondwana Paleomagnetismo https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
Paleogeografía Paleozoico Gondwana Paleomagnetismo https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Font, E. Rapalini, Augusto Ernesto Tomezzoli, Renata Nela Trindade, R. I. F. Tovher, E. Episodic remagnetizations related to tectonic events and their consequences for the South America polar wander path |
topic_facet |
Paleogeografía Paleozoico Gondwana Paleomagnetismo https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
The South American record of remagnetizations is linked to specific events of its tectonic history stretching back to Precambrian times. At the Ediacaran-Cambrian time interval (570-500 Ma), the final stages of the western Gondwana assemblage led to remagnetization of Neoproterozoic carbonates within the São Francisco-Congo Craton and at the border of the Amazon Craton, along the Araguaia-Paraguay-Pampean Belt. From the late Permian to early Triassic, the San Rafaelic orogeny and the emplacement of the Choiyoi magmatic province was responsible for widespread remagnetizations in Argentina and Uruguay. Cretaceous remagnetization has also been documented in Brazil and interpreted to result from magmatism and fault reactivations linked to the opening of the South Atlantic Ocean. We present a review of these widespread remagnetization events principally based on palaeomagnetic data and, when available, on rock magnetic and radiogenic isotope age data. This study gives an overview of the geographical distribution of the remagnetization events in South America, and provides important clues to better understand the geodynamic evolution of the South American plate at these times. In addition, magnetic mineralogy data for the different case studies presented here constrain the physical-chemical mechanisms that led to partial or total resetting of magnetic remanences in sedimentary rocks. Fil: Font, E. Universidade de Lisboa. Faculdade de Ciências; Brasil Fil: Rapalini, Augusto Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Instituto de Geofísica "Daniel Valencio"; Argentina Fil: Tomezzoli, Renata Nela. Consejo ... |
format |
Article in Journal/Newspaper |
author |
Font, E. Rapalini, Augusto Ernesto Tomezzoli, Renata Nela Trindade, R. I. F. Tovher, E. |
author_facet |
Font, E. Rapalini, Augusto Ernesto Tomezzoli, Renata Nela Trindade, R. I. F. Tovher, E. |
author_sort |
Font, E. |
title |
Episodic remagnetizations related to tectonic events and their consequences for the South America polar wander path |
title_short |
Episodic remagnetizations related to tectonic events and their consequences for the South America polar wander path |
title_full |
Episodic remagnetizations related to tectonic events and their consequences for the South America polar wander path |
title_fullStr |
Episodic remagnetizations related to tectonic events and their consequences for the South America polar wander path |
title_full_unstemmed |
Episodic remagnetizations related to tectonic events and their consequences for the South America polar wander path |
title_sort |
episodic remagnetizations related to tectonic events and their consequences for the south america polar wander path |
publisher |
Geological Society Publications House |
url |
http://hdl.handle.net/11336/68225 |
long_lat |
ENVELOPE(-61.613,-61.613,-64.054,-64.054) ENVELOPE(35.277,35.277,63.715,63.715) |
geographic |
Argentina Uruguay Augusto Nela |
geographic_facet |
Argentina Uruguay Augusto Nela |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1144/SP371.7 info:eu-repo/semantics/altIdentifier/url/http://sp.lyellcollection.org/content/371/1/55 http://hdl.handle.net/11336/68225 Font, E.; Rapalini, Augusto Ernesto; Tomezzoli, Renata Nela; Trindade, R. I. F.; Tovher, E. Episodic remagnetizations related to tectonic events and their consequences for the South America polar wander path; Geological Society Publications House; Geological Society of London Special Publication; 371; 1; 8-2012; 55-87 0305-8719 2041-4927 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1144/SP371.7 |
container_title |
Geological Society, London, Special Publications |
container_volume |
371 |
container_issue |
1 |
container_start_page |
55 |
op_container_end_page |
87 |
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1779320204533170176 |