Bio and magnetostratigraphy of two Lower Miocene sections, Tagus basin (Portugal)

Detalhes bibliográficos
Autor(a) principal: Sen, S.
Data de Publicação: 1992
Outros Autores: Antunes, M. Telles, Pais, João, Legoinha, P.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/4510
Resumo: The magnetostratigraphy of two sections in early Miocene marine deposits of the Tagus Basin is studied. Thermal demagnetization was used to isolate the primary component of magnetization for 45 samples from the Foz da Fonte section, and for 74 others from Trafaria section. The succession of the polarity zones found in these sections is tentatively correlated with the geomagnetic polarity time scale (GPTS) on the basis of the biostratigraphic data yielded by planktic Foraminifera. The planktic zones and magnetic polarities recognized in these sections can be adequately correlated with the part of the GPTS [table calibrated by BERGGRENET al. (1985)] corresponding to the Anomalies 6 and 5E (Foz da Fonte) and 5D (Trafaria). This correlations suggests ages between 19,35 and 18,14 Ma for Foz da Fonte section, and 17,90 to 16,98 Ma for Trafaria.
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spelling Bio and magnetostratigraphy of two Lower Miocene sections, Tagus basin (Portugal)Lower MioceneMagnetostratigraphyForaminiferaLisboaTagus BasinPortugalThe magnetostratigraphy of two sections in early Miocene marine deposits of the Tagus Basin is studied. Thermal demagnetization was used to isolate the primary component of magnetization for 45 samples from the Foz da Fonte section, and for 74 others from Trafaria section. The succession of the polarity zones found in these sections is tentatively correlated with the geomagnetic polarity time scale (GPTS) on the basis of the biostratigraphic data yielded by planktic Foraminifera. The planktic zones and magnetic polarities recognized in these sections can be adequately correlated with the part of the GPTS [table calibrated by BERGGRENET al. (1985)] corresponding to the Anomalies 6 and 5E (Foz da Fonte) and 5D (Trafaria). This correlations suggests ages between 19,35 and 18,14 Ma for Foz da Fonte section, and 17,90 to 16,98 Ma for Trafaria.RUNSen, S.Antunes, M. TellesPais, JoãoLegoinha, P.2010-12-14T15:44:12Z19921992-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/4510enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-10T15:24:33ZPortal AgregadorONG
dc.title.none.fl_str_mv Bio and magnetostratigraphy of two Lower Miocene sections, Tagus basin (Portugal)
title Bio and magnetostratigraphy of two Lower Miocene sections, Tagus basin (Portugal)
spellingShingle Bio and magnetostratigraphy of two Lower Miocene sections, Tagus basin (Portugal)
Sen, S.
Lower Miocene
Magnetostratigraphy
Foraminifera
Lisboa
Tagus Basin
Portugal
title_short Bio and magnetostratigraphy of two Lower Miocene sections, Tagus basin (Portugal)
title_full Bio and magnetostratigraphy of two Lower Miocene sections, Tagus basin (Portugal)
title_fullStr Bio and magnetostratigraphy of two Lower Miocene sections, Tagus basin (Portugal)
title_full_unstemmed Bio and magnetostratigraphy of two Lower Miocene sections, Tagus basin (Portugal)
title_sort Bio and magnetostratigraphy of two Lower Miocene sections, Tagus basin (Portugal)
author Sen, S.
author_facet Sen, S.
Antunes, M. Telles
Pais, João
Legoinha, P.
author_role author
author2 Antunes, M. Telles
Pais, João
Legoinha, P.
author2_role author
author
author
dc.contributor.none.fl_str_mv RUN
dc.contributor.author.fl_str_mv Sen, S.
Antunes, M. Telles
Pais, João
Legoinha, P.
dc.subject.por.fl_str_mv Lower Miocene
Magnetostratigraphy
Foraminifera
Lisboa
Tagus Basin
Portugal
topic Lower Miocene
Magnetostratigraphy
Foraminifera
Lisboa
Tagus Basin
Portugal
description The magnetostratigraphy of two sections in early Miocene marine deposits of the Tagus Basin is studied. Thermal demagnetization was used to isolate the primary component of magnetization for 45 samples from the Foz da Fonte section, and for 74 others from Trafaria section. The succession of the polarity zones found in these sections is tentatively correlated with the geomagnetic polarity time scale (GPTS) on the basis of the biostratigraphic data yielded by planktic Foraminifera. The planktic zones and magnetic polarities recognized in these sections can be adequately correlated with the part of the GPTS [table calibrated by BERGGRENET al. (1985)] corresponding to the Anomalies 6 and 5E (Foz da Fonte) and 5D (Trafaria). This correlations suggests ages between 19,35 and 18,14 Ma for Foz da Fonte section, and 17,90 to 16,98 Ma for Trafaria.
publishDate 1992
dc.date.none.fl_str_mv 1992
1992-01-01T00:00:00Z
2010-12-14T15:44:12Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/4510
url http://hdl.handle.net/10362/4510
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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