Contribuição para a análise tectono-sedimentar do Fosso de Aljezur (SW de Portugal)
Autor(a) principal: | |
---|---|
Data de Publicação: | 2010 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10362/4713 |
Resumo: | The Aljezur "graben" is a crucial piece in understanding the Caenozoic evolution of the SW atlantic portuguese edge. Detailed study of the sedimentary filling and bordering accidents allows the identification of several evolution steps since the Miocene. The graben is bordered by accidents that dislocate geomorphologic surfaces (Littoral Platform to the W, Interior Platform to the E), and also Neogene sedimentary units. The sedimentary filling is composed by conglomerates and sands grading into clays and bioclastic limestones (Burdigalian to Serravalian), upon which lie unconformably fine reddish sands, sometimes with abundant micas. Genetic and geometric relationships between these sands, those in higher surfaces outside the "graben" and the main bordering faults, are discussed. As a conclusion, the reconstruction of the tectono-sedimentary evolution is attempted, integrating it in a "pull-apart" context associated with the Messejana-fault system and it's reactivation by the differently orientated alpine compressions. |
id |
RCAP_908f85b59217ce843f3ff1056090aaca |
---|---|
oai_identifier_str |
oai:run.unl.pt:10362/4713 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Contribuição para a análise tectono-sedimentar do Fosso de Aljezur (SW de Portugal)CenozoicPortugalAlpine tectonicsSedimentologyPull-appart basinsThe Aljezur "graben" is a crucial piece in understanding the Caenozoic evolution of the SW atlantic portuguese edge. Detailed study of the sedimentary filling and bordering accidents allows the identification of several evolution steps since the Miocene. The graben is bordered by accidents that dislocate geomorphologic surfaces (Littoral Platform to the W, Interior Platform to the E), and also Neogene sedimentary units. The sedimentary filling is composed by conglomerates and sands grading into clays and bioclastic limestones (Burdigalian to Serravalian), upon which lie unconformably fine reddish sands, sometimes with abundant micas. Genetic and geometric relationships between these sands, those in higher surfaces outside the "graben" and the main bordering faults, are discussed. As a conclusion, the reconstruction of the tectono-sedimentary evolution is attempted, integrating it in a "pull-apart" context associated with the Messejana-fault system and it's reactivation by the differently orientated alpine compressions.RUNPimentel, N.Amaro, H.2010-12-29T14:38:34Z2010-12-292010-12-29T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/4713porinfo: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:RCAAP2024-03-11T03:34:38Zoai:run.unl.pt:10362/4713Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:15:50.163309Repositório 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 |
Contribuição para a análise tectono-sedimentar do Fosso de Aljezur (SW de Portugal) |
title |
Contribuição para a análise tectono-sedimentar do Fosso de Aljezur (SW de Portugal) |
spellingShingle |
Contribuição para a análise tectono-sedimentar do Fosso de Aljezur (SW de Portugal) Pimentel, N. Cenozoic Portugal Alpine tectonics Sedimentology Pull-appart basins |
title_short |
Contribuição para a análise tectono-sedimentar do Fosso de Aljezur (SW de Portugal) |
title_full |
Contribuição para a análise tectono-sedimentar do Fosso de Aljezur (SW de Portugal) |
title_fullStr |
Contribuição para a análise tectono-sedimentar do Fosso de Aljezur (SW de Portugal) |
title_full_unstemmed |
Contribuição para a análise tectono-sedimentar do Fosso de Aljezur (SW de Portugal) |
title_sort |
Contribuição para a análise tectono-sedimentar do Fosso de Aljezur (SW de Portugal) |
author |
Pimentel, N. |
author_facet |
Pimentel, N. Amaro, H. |
author_role |
author |
author2 |
Amaro, H. |
author2_role |
author |
dc.contributor.none.fl_str_mv |
RUN |
dc.contributor.author.fl_str_mv |
Pimentel, N. Amaro, H. |
dc.subject.por.fl_str_mv |
Cenozoic Portugal Alpine tectonics Sedimentology Pull-appart basins |
topic |
Cenozoic Portugal Alpine tectonics Sedimentology Pull-appart basins |
description |
The Aljezur "graben" is a crucial piece in understanding the Caenozoic evolution of the SW atlantic portuguese edge. Detailed study of the sedimentary filling and bordering accidents allows the identification of several evolution steps since the Miocene. The graben is bordered by accidents that dislocate geomorphologic surfaces (Littoral Platform to the W, Interior Platform to the E), and also Neogene sedimentary units. The sedimentary filling is composed by conglomerates and sands grading into clays and bioclastic limestones (Burdigalian to Serravalian), upon which lie unconformably fine reddish sands, sometimes with abundant micas. Genetic and geometric relationships between these sands, those in higher surfaces outside the "graben" and the main bordering faults, are discussed. As a conclusion, the reconstruction of the tectono-sedimentary evolution is attempted, integrating it in a "pull-apart" context associated with the Messejana-fault system and it's reactivation by the differently orientated alpine compressions. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-12-29T14:38:34Z 2010-12-29 2010-12-29T00:00:00Z |
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/10362/4713 |
url |
http://hdl.handle.net/10362/4713 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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) 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 |
repository.mail.fl_str_mv |
|
_version_ |
1799137809037000704 |