Miocene lithological, foraminiferal and palynological data from the Belverde borehole (Portugal)
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | , , , , |
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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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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7160 |
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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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799137801629859840 |