Miocene lithological, foraminiferal and palynological data from the Belverde borehole (Portugal)

Detalhes bibliográficos
Autor(a) principal: Legoinha, P.
Data de Publicação: 2004
Outros Autores: Sousa, Lígia, Pais, João, Ferreira, João, Amado, Ana Rita, Ribeiro, Isabel
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/1893
Resumo: XVIII Jornadas de Paleontología, 2002
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spelling Miocene lithological, foraminiferal and palynological data from the Belverde borehole (Portugal)Belverde boreholeLower Tagus basinPortugal, miocenePalynology87Sr j86Sr agesXVIII Jornadas de Paleontología, 2002Preliminary data on litho stratigraphy and biostratigraphy of the Belverde borehole (http://www. dct.Jct.unl.pt/ SondagemISondagem/colunalindex_col.html) is presented. The borehole attained 619,77 m of depth, crossing 130 m of Plio-Pleistocene and 460 m of Miocene dep osits. Main lithologies are fine sands , marl s and biocalcarenites. A coral reef was recognized in the lower part of the borehole (530-585 m). Gamma ray, neutrons and sonic diagraphies were obtained. Eight 87Sr/86Sr isotopic ages (H. Elderfield, Cambridge University)and the presence of some of the main planktonic foraminifera markers were used to establish the chronostratigraphic framework. Plankt onic spikes are related to the major transgression s of the Lower Tagus Basin (LTB): M. Burdigalian (sample Belv 459 ; 446 m), L. Serravallian (Belv 76; 244 m) and L. Tortonian (Belv 51, 202 m). Benthi c assemblages are dominated by Ammonia, Elphidium and Nonion. Spores suggest a mild and humid climate during the uppermost Burdigalian to the Tortonian. Pollen is scarce. Thirty dinoflagellates taxa (26 Gonyaulacoids and 4 Peridinioids) have been identi fied, indicating coastal to shallow marine environments. In the uppermost Burdigalian to the Tortonian the presence of peridinioids and scarce acritarchs suggest influence of inshore to brackish environments. Several 87Sr /86Sr ages obtained by H. Elderfield (Cambridge University) fit well with the biostratigraphy for the Lower an Middle Miocene, but values given by Howarth and Mcarthur (1997) are closer to the Upper Miocene bio stratigraphic data.Universidad de SalamancaRUNLegoinha, P.Sousa, LígiaPais, JoãoFerreira, JoãoAmado, Ana RitaRibeiro, Isabel2009-04-07T10:49:57Z20042004-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/1893eng0213-6937info: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:RCAAP2024-03-11T03:32:01Zoai:run.unl.pt:10362/1893Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:14:54.646737Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Miocene lithological, foraminiferal and palynological data from the Belverde borehole (Portugal)
title Miocene lithological, foraminiferal and palynological data from the Belverde borehole (Portugal)
spellingShingle Miocene lithological, foraminiferal and palynological data from the Belverde borehole (Portugal)
Legoinha, P.
Belverde borehole
Lower Tagus basin
Portugal, miocene
Palynology
87Sr j86Sr ages
title_short Miocene lithological, foraminiferal and palynological data from the Belverde borehole (Portugal)
title_full Miocene lithological, foraminiferal and palynological data from the Belverde borehole (Portugal)
title_fullStr Miocene lithological, foraminiferal and palynological data from the Belverde borehole (Portugal)
title_full_unstemmed Miocene lithological, foraminiferal and palynological data from the Belverde borehole (Portugal)
title_sort Miocene lithological, foraminiferal and palynological data from the Belverde borehole (Portugal)
author Legoinha, P.
author_facet Legoinha, P.
Sousa, Lígia
Pais, João
Ferreira, João
Amado, Ana Rita
Ribeiro, Isabel
author_role author
author2 Sousa, Lígia
Pais, João
Ferreira, João
Amado, Ana Rita
Ribeiro, Isabel
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv RUN
dc.contributor.author.fl_str_mv Legoinha, P.
Sousa, Lígia
Pais, João
Ferreira, João
Amado, Ana Rita
Ribeiro, Isabel
dc.subject.por.fl_str_mv Belverde borehole
Lower Tagus basin
Portugal, miocene
Palynology
87Sr j86Sr ages
topic Belverde borehole
Lower Tagus basin
Portugal, miocene
Palynology
87Sr j86Sr ages
description XVIII Jornadas de Paleontología, 2002
publishDate 2004
dc.date.none.fl_str_mv 2004
2004-01-01T00:00:00Z
2009-04-07T10:49:57Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/1893
url http://hdl.handle.net/10362/1893
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0213-6937
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.publisher.none.fl_str_mv Universidad de Salamanca
publisher.none.fl_str_mv Universidad de Salamanca
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
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)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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