Magnetostratigraphy of a Middle Jurassic red bed sequence from southern Mexico

Palaeomagnetic results for 178 oriented samples from five sections (combined thickness of 75 m) of the red bed Tecomazuchil Formation, southern Mexico are reported. The formation has been assigned to the Bathonian(?)-Callovian, and the sections studied cover its uppermost portion. Alternating field...

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Detalles Bibliográficos
Autor principal:	Valencio, Daniel Alberto
Publicado:	1990
Materias:	Jurassic magnetostratigraphy palaeomagnetism red bed Mexico
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319201_v64_n2-4_p237_Fucugauchi http://hdl.handle.net/20.500.12110/paper_00319201_v64_n2-4_p237_Fucugauchi
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00319201_v64_n2-4_p237_Fucugauchi
record_format	dspace
spelling	paper:paper_00319201_v64_n2-4_p237_Fucugauchi2023-06-08T14:58:55Z Magnetostratigraphy of a Middle Jurassic red bed sequence from southern Mexico Valencio, Daniel Alberto Jurassic magnetostratigraphy palaeomagnetism red bed Mexico Palaeomagnetic results for 178 oriented samples from five sections (combined thickness of 75 m) of the red bed Tecomazuchil Formation, southern Mexico are reported. The formation has been assigned to the Bathonian(?)-Callovian, and the sections studied cover its uppermost portion. Alternating field (a.f.), thermal, combination of a.f. and thermal, and chemical demagnetizations were used to investigate the magnetic stability and vectorial directions of all samples. Most samples showed apparent stable behaviour with dominantly single or two-component magnetization. Reverse and intermediate polarity samples more often showed two- and multi-component remanences. Behaviour during demagnetization and rock-magnetic experiments indicate that the remanences reside in magnetite, haematite and goethite. The magnetostratigraphic results reveal a polarity pattern characterized by frequent polarity changes. © 1990. Fil:Valencio, D.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1990 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319201_v64_n2-4_p237_Fucugauchi http://hdl.handle.net/20.500.12110/paper_00319201_v64_n2-4_p237_Fucugauchi
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Jurassic magnetostratigraphy palaeomagnetism red bed Mexico
spellingShingle	Jurassic magnetostratigraphy palaeomagnetism red bed Mexico Valencio, Daniel Alberto Magnetostratigraphy of a Middle Jurassic red bed sequence from southern Mexico
topic_facet	Jurassic magnetostratigraphy palaeomagnetism red bed Mexico
description	Palaeomagnetic results for 178 oriented samples from five sections (combined thickness of 75 m) of the red bed Tecomazuchil Formation, southern Mexico are reported. The formation has been assigned to the Bathonian(?)-Callovian, and the sections studied cover its uppermost portion. Alternating field (a.f.), thermal, combination of a.f. and thermal, and chemical demagnetizations were used to investigate the magnetic stability and vectorial directions of all samples. Most samples showed apparent stable behaviour with dominantly single or two-component magnetization. Reverse and intermediate polarity samples more often showed two- and multi-component remanences. Behaviour during demagnetization and rock-magnetic experiments indicate that the remanences reside in magnetite, haematite and goethite. The magnetostratigraphic results reveal a polarity pattern characterized by frequent polarity changes. © 1990.
author	Valencio, Daniel Alberto
author_facet	Valencio, Daniel Alberto
author_sort	Valencio, Daniel Alberto
title	Magnetostratigraphy of a Middle Jurassic red bed sequence from southern Mexico
title_short	Magnetostratigraphy of a Middle Jurassic red bed sequence from southern Mexico
title_full	Magnetostratigraphy of a Middle Jurassic red bed sequence from southern Mexico
title_fullStr	Magnetostratigraphy of a Middle Jurassic red bed sequence from southern Mexico
title_full_unstemmed	Magnetostratigraphy of a Middle Jurassic red bed sequence from southern Mexico
title_sort	magnetostratigraphy of a middle jurassic red bed sequence from southern mexico
publishDate	1990
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319201_v64_n2-4_p237_Fucugauchi http://hdl.handle.net/20.500.12110/paper_00319201_v64_n2-4_p237_Fucugauchi
work_keys_str_mv	AT valenciodanielalberto magnetostratigraphyofamiddlejurassicredbedsequencefromsouthernmexico
_version_	1768541882131939328

Magnetostratigraphy of a Middle Jurassic red bed sequence from southern Mexico

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