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...
Main Authors: | , , |
---|---|
Language: | unknown |
Published: |
2015
|
Subjects: | |
Online Access: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1342937X_v27_n4_p1534_Rapalini https://hdl.handle.net/20.500.12110/paper_1342937X_v27_n4_p1534_Rapalini |
id |
ftunibueairesbd:paper:paper_1342937X_v27_n4_p1534_Rapalini |
---|---|
record_format |
openpolar |
spelling |
ftunibueairesbd:paper:paper_1342937X_v27_n4_p1534_Rapalini 2023-05-15T16:19:40+02:00 Paleomagnetic study on mid-Paleoproterozoic rocks from the Rio de la Plata craton: Implications for Atlantica Rapalini, Augusto Ernesto Sánchez Bettucci, Leda Vasquez, Carlos Alberto 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1342937X_v27_n4_p1534_Rapalini https://hdl.handle.net/20.500.12110/paper_1342937X_v27_n4_p1534_Rapalini unknown https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1342937X_v27_n4_p1534_Rapalini http://hdl.handle.net/20.500.12110/paper_1342937X_v27_n4_p1534_Rapalini Atlantica Paleomagnetism Paleoproterozoic Rio de la Plata craton South America 2015 ftunibueairesbd https://doi.org/20.500.12110/paper_1342937X_v27_n4_p1534_Rapalini 2023-02-16T02:10:36Z 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. © 2014 International Association for Gondwana Research. Fil:Rapalini, A.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Sánchez Bettucci, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vásquez, C.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Other/Unknown Material Geomagnetic Pole Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) Argentina Uruguay |
institution |
Open Polar |
collection |
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) |
op_collection_id |
ftunibueairesbd |
language |
unknown |
topic |
Atlantica Paleomagnetism Paleoproterozoic Rio de la Plata craton South America |
spellingShingle |
Atlantica Paleomagnetism Paleoproterozoic Rio de la Plata craton South America Rapalini, Augusto Ernesto Sánchez Bettucci, Leda 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 |
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. © 2014 International Association for Gondwana Research. Fil:Rapalini, A.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Sánchez Bettucci, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vásquez, C.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. |
author |
Rapalini, Augusto Ernesto Sánchez Bettucci, Leda Vasquez, Carlos Alberto |
author_facet |
Rapalini, Augusto Ernesto Sánchez Bettucci, Leda 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 |
publishDate |
2015 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1342937X_v27_n4_p1534_Rapalini https://hdl.handle.net/20.500.12110/paper_1342937X_v27_n4_p1534_Rapalini |
geographic |
Argentina Uruguay |
geographic_facet |
Argentina Uruguay |
genre |
Geomagnetic Pole |
genre_facet |
Geomagnetic Pole |
op_relation |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1342937X_v27_n4_p1534_Rapalini http://hdl.handle.net/20.500.12110/paper_1342937X_v27_n4_p1534_Rapalini |
op_doi |
https://doi.org/20.500.12110/paper_1342937X_v27_n4_p1534_Rapalini |
_version_ |
1766006071566008320 |