Palaeomagnetic study of Permocarboniferous glacial varves from the Itarare Subgroup, southern Brazil
Summary. A sequence of 167 glacial varves from Itu, State of São Paulo (Brazil), has been sampled for palaeomagnetic analysis. Since the varve thicknesses permit individual measurements, an attempt was made to compare annual palaeomagnetic results with recent observatory data. Inclination and declin...
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todo:paper_00168009_v67_n3_p635_Sinito2023-10-03T14:14:52Z Palaeomagnetic study of Permocarboniferous glacial varves from the Itarare Subgroup, southern Brazil Sinito, A.M. Valencio, D.A. Ernesto, M. Pacca, I.G. Summary. A sequence of 167 glacial varves from Itu, State of São Paulo (Brazil), has been sampled for palaeomagnetic analysis. Since the varve thicknesses permit individual measurements, an attempt was made to compare annual palaeomagnetic results with recent observatory data. Inclination and declination plots show larger variations than those displayed by the present geomagnetic field. This could, however, be due to sedimentation factors since it may be assumed that the pattern of the present geomagnetic field variations is not greatly different from that of the Permocarboniferous field. In the next paper (Ernesto & Pacca) the experimental data are submitted to spectral analysis and the results support some of the hypotheses raised in this work. Copyright © 1981, Wiley Blackwell. All rights reserved Fil:Sinito, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Valencio, D.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_00168009_v67_n3_p635_Sinito |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
Summary. A sequence of 167 glacial varves from Itu, State of São Paulo (Brazil), has been sampled for palaeomagnetic analysis. Since the varve thicknesses permit individual measurements, an attempt was made to compare annual palaeomagnetic results with recent observatory data. Inclination and declination plots show larger variations than those displayed by the present geomagnetic field. This could, however, be due to sedimentation factors since it may be assumed that the pattern of the present geomagnetic field variations is not greatly different from that of the Permocarboniferous field. In the next paper (Ernesto & Pacca) the experimental data are submitted to spectral analysis and the results support some of the hypotheses raised in this work. Copyright © 1981, Wiley Blackwell. All rights reserved |
| format |
JOUR |
| author |
Sinito, A.M. Valencio, D.A. Ernesto, M. Pacca, I.G. |
| spellingShingle |
Sinito, A.M. Valencio, D.A. Ernesto, M. Pacca, I.G. Palaeomagnetic study of Permocarboniferous glacial varves from the Itarare Subgroup, southern Brazil |
| author_facet |
Sinito, A.M. Valencio, D.A. Ernesto, M. Pacca, I.G. |
| author_sort |
Sinito, A.M. |
| title |
Palaeomagnetic study of Permocarboniferous glacial varves from the Itarare Subgroup, southern Brazil |
| title_short |
Palaeomagnetic study of Permocarboniferous glacial varves from the Itarare Subgroup, southern Brazil |
| title_full |
Palaeomagnetic study of Permocarboniferous glacial varves from the Itarare Subgroup, southern Brazil |
| title_fullStr |
Palaeomagnetic study of Permocarboniferous glacial varves from the Itarare Subgroup, southern Brazil |
| title_full_unstemmed |
Palaeomagnetic study of Permocarboniferous glacial varves from the Itarare Subgroup, southern Brazil |
| title_sort |
palaeomagnetic study of permocarboniferous glacial varves from the itarare subgroup, southern brazil |
| url |
http://hdl.handle.net/20.500.12110/paper_00168009_v67_n3_p635_Sinito |
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