Paleomagnetic study on mid-Paleoproterozoic rocks from the Rio de la Plata craton: Implications for Atlantica
The first successful paleomagnetic study on middle Paleoproterozoic rocks from the Rio de la Plata craton is reported. Samples collected from the Soca and Isla Mala granitic bodies, located in southern Uruguay, provided characteristic remanences that were used to compute the first paleomagnetic pole...
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ftconicet:oai:ri.conicet.gov.ar:11336/60376 2023-10-09T21:51:41+02:00 Paleomagnetic study on mid-Paleoproterozoic rocks from the Rio de la Plata craton: Implications for Atlantica Rapalini, Augusto Ernesto Bettucci Sanchez, Leda Badgen, Ezequiel Vasquez, Carlos Alberto application/pdf http://hdl.handle.net/11336/60376 eng eng Elsevier Science info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gr.2014.01.012 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1342937X14000434 http://hdl.handle.net/11336/60376 Rapalini, Augusto Ernesto; Bettucci Sanchez, Leda; Badgen, Ezequiel; Vasquez, Carlos Alberto; Paleomagnetic study on mid-Paleoproterozoic rocks from the Rio de la Plata craton: Implications for Atlantica; Elsevier Science; Gondwana Research; 27; 4; 6-2015; 1534-1549 1342-937X CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ Atlantica Paleomagnetism Paleoproterozoic Rio de La Plata Craton South America 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/10.1016/j.gr.2014.01.012 2023-09-24T19:43:15Z The first successful paleomagnetic study on middle Paleoproterozoic rocks from the Rio de la Plata craton is reported. Samples collected from the Soca and Isla Mala granitic bodies, located in southern Uruguay, provided characteristic remanences that were used to compute the first paleomagnetic poles for the craton for ca. 2.05-2.02. Ga. The poles were complemented by a virtual geomagnetic pole from the slightly older Marincho and Mahoma complexes. The paleomagnetic results suggest fast apparent polar wander at high paleolatitudes for the Rio de la Plata craton. Comparison with coeval poles from the Guiana, Congo-São Francisco and West African cratons indicates that a configuration of Atlantica that resembles their Western Gondwana fit is not supported by paleomagnetic data. The geologic similarities in these four cratons are supportive of a major crustal forming event between 2.2-2.0. Ga. A modified configuration for Atlantica is proposed that is consistent with our new (and older) paleomagnetic data. Atlantica was assembled at 2.1-2.05. Ga at polar latitudes and drifted towards the equator soon afterwards. 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 Fil: Bettucci Sanchez, Leda. Universidad de la República; Uruguay Fil: Badgen, Ezequiel. 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 Fil: Vasquez, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y ... Article in Journal/Newspaper Geomagnetic Pole CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Argentina Uruguay Augusto ENVELOPE(-61.613,-61.613,-64.054,-64.054) Leda ENVELOPE(140.024,140.024,-66.661,-66.661) Gondwana Research 27 4 1534 1549 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
Atlantica Paleomagnetism Paleoproterozoic Rio de La Plata Craton South America https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
Atlantica Paleomagnetism Paleoproterozoic Rio de La Plata Craton South America https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Rapalini, Augusto Ernesto Bettucci Sanchez, Leda Badgen, Ezequiel Vasquez, Carlos Alberto Paleomagnetic study on mid-Paleoproterozoic rocks from the Rio de la Plata craton: Implications for Atlantica |
topic_facet |
Atlantica Paleomagnetism Paleoproterozoic Rio de La Plata Craton South America https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
The first successful paleomagnetic study on middle Paleoproterozoic rocks from the Rio de la Plata craton is reported. Samples collected from the Soca and Isla Mala granitic bodies, located in southern Uruguay, provided characteristic remanences that were used to compute the first paleomagnetic poles for the craton for ca. 2.05-2.02. Ga. The poles were complemented by a virtual geomagnetic pole from the slightly older Marincho and Mahoma complexes. The paleomagnetic results suggest fast apparent polar wander at high paleolatitudes for the Rio de la Plata craton. Comparison with coeval poles from the Guiana, Congo-São Francisco and West African cratons indicates that a configuration of Atlantica that resembles their Western Gondwana fit is not supported by paleomagnetic data. The geologic similarities in these four cratons are supportive of a major crustal forming event between 2.2-2.0. Ga. A modified configuration for Atlantica is proposed that is consistent with our new (and older) paleomagnetic data. Atlantica was assembled at 2.1-2.05. Ga at polar latitudes and drifted towards the equator soon afterwards. 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 Fil: Bettucci Sanchez, Leda. Universidad de la República; Uruguay Fil: Badgen, Ezequiel. 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 Fil: Vasquez, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y ... |
format |
Article in Journal/Newspaper |
author |
Rapalini, Augusto Ernesto Bettucci Sanchez, Leda Badgen, Ezequiel Vasquez, Carlos Alberto |
author_facet |
Rapalini, Augusto Ernesto Bettucci Sanchez, Leda Badgen, Ezequiel Vasquez, Carlos Alberto |
author_sort |
Rapalini, Augusto Ernesto |
title |
Paleomagnetic study on mid-Paleoproterozoic rocks from the Rio de la Plata craton: Implications for Atlantica |
title_short |
Paleomagnetic study on mid-Paleoproterozoic rocks from the Rio de la Plata craton: Implications for Atlantica |
title_full |
Paleomagnetic study on mid-Paleoproterozoic rocks from the Rio de la Plata craton: Implications for Atlantica |
title_fullStr |
Paleomagnetic study on mid-Paleoproterozoic rocks from the Rio de la Plata craton: Implications for Atlantica |
title_full_unstemmed |
Paleomagnetic study on mid-Paleoproterozoic rocks from the Rio de la Plata craton: Implications for Atlantica |
title_sort |
paleomagnetic study on mid-paleoproterozoic rocks from the rio de la plata craton: implications for atlantica |
publisher |
Elsevier Science |
url |
http://hdl.handle.net/11336/60376 |
long_lat |
ENVELOPE(-61.613,-61.613,-64.054,-64.054) ENVELOPE(140.024,140.024,-66.661,-66.661) |
geographic |
Argentina Uruguay Augusto Leda |
geographic_facet |
Argentina Uruguay Augusto Leda |
genre |
Geomagnetic Pole |
genre_facet |
Geomagnetic Pole |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gr.2014.01.012 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1342937X14000434 http://hdl.handle.net/11336/60376 Rapalini, Augusto Ernesto; Bettucci Sanchez, Leda; Badgen, Ezequiel; Vasquez, Carlos Alberto; Paleomagnetic study on mid-Paleoproterozoic rocks from the Rio de la Plata craton: Implications for Atlantica; Elsevier Science; Gondwana Research; 27; 4; 6-2015; 1534-1549 1342-937X CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
op_doi |
https://doi.org/10.1016/j.gr.2014.01.012 |
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Gondwana Research |
container_volume |
27 |
container_issue |
4 |
container_start_page |
1534 |
op_container_end_page |
1549 |
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1779314818283470848 |