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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Autores principales: Sinito, Ana María, Valencio, Daniel Alberto
Publicado: 1981
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00168009_v67_n3_p635_Sinito
http://hdl.handle.net/20.500.12110/paper_00168009_v67_n3_p635_Sinito
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00168009_v67_n3_p635_Sinito
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spelling paper:paper_00168009_v67_n3_p635_Sinito2023-06-08T14:38:57Z Palaeomagnetic study of Permocarboniferous glacial varves from the Itarare Subgroup, southern Brazil Sinito, Ana María Valencio, Daniel Alberto 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. 1981 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00168009_v67_n3_p635_Sinito 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
author Sinito, Ana María
Valencio, Daniel Alberto
spellingShingle Sinito, Ana María
Valencio, Daniel Alberto
Palaeomagnetic study of Permocarboniferous glacial varves from the Itarare Subgroup, southern Brazil
author_facet Sinito, Ana María
Valencio, Daniel Alberto
author_sort Sinito, Ana María
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
publishDate 1981
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00168009_v67_n3_p635_Sinito
http://hdl.handle.net/20.500.12110/paper_00168009_v67_n3_p635_Sinito
work_keys_str_mv AT sinitoanamaria palaeomagneticstudyofpermocarboniferousglacialvarvesfromtheitararesubgroupsouthernbrazil
AT valenciodanielalberto palaeomagneticstudyofpermocarboniferousglacialvarvesfromtheitararesubgroupsouthernbrazil
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