Tectonostratigraphy of Middle and Upper Palaeozoic black shales from the Porto-Tomar-Ferreira do Alentejo shear zone (W Portugal): new perspectives on the Iberian Massif
Autor(a) principal: | |
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Data de Publicação: | 2003 |
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/10174/2216 |
Resumo: | Abstract Middle/late Devonian and early Carboniferous metasedimentary sequences in the northernmost region (Porto-Espinho-Tomar) of the Ossa-Morena Zone (Portuguese Iberian Variscan Massif) contain black shales of very low to low-grade metamorphism. These metasedimentary rocks form a discrete NNW-SSE structure within a major shear zone (Porto-Tomar-Ferreira do Alentejo) and remain subparallel to the observed regional major structures (folding, thrusts or overthrusts). These black shales are overhanged and then imbricated in an upper Proterozoic metamorphic substratum. A multi-disciplinary study of these metasedimentary rocks from the Espinho-Tomar region has tectonostratigraphy, palynology, organic petrology and clay mineralogy combined methods. This approach provides new insights into the tectonic evolution and geological framework of Palaeozoic basement of the IberianVariscides. Palaeoenvironmental and tectonostratigraphic implications on the Iberian geodynamic framework are discussed. © 2003 Éditions scientifiques et médicales Elsevier SAS. All rights reserved. |
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Tectonostratigraphy of Middle and Upper Palaeozoic black shales from the Porto-Tomar-Ferreira do Alentejo shear zone (W Portugal): new perspectives on the Iberian MassifTectonostratigraphie du Paleozoïque moyen-supérieur de la bande de cisaillement Porto-Tomar-Ferreira de l’Alentejo (Ouest du Portugal) : nouvelles perspectives pour le Massif IbériqueDevonianCarboniferousTectonostratigraphyPalynomorphsPorto-Tomar-Ferreira do Alentejo Shear ZoneIberianVariscidesAbstract Middle/late Devonian and early Carboniferous metasedimentary sequences in the northernmost region (Porto-Espinho-Tomar) of the Ossa-Morena Zone (Portuguese Iberian Variscan Massif) contain black shales of very low to low-grade metamorphism. These metasedimentary rocks form a discrete NNW-SSE structure within a major shear zone (Porto-Tomar-Ferreira do Alentejo) and remain subparallel to the observed regional major structures (folding, thrusts or overthrusts). These black shales are overhanged and then imbricated in an upper Proterozoic metamorphic substratum. A multi-disciplinary study of these metasedimentary rocks from the Espinho-Tomar region has tectonostratigraphy, palynology, organic petrology and clay mineralogy combined methods. This approach provides new insights into the tectonic evolution and geological framework of Palaeozoic basement of the IberianVariscides. Palaeoenvironmental and tectonostratigraphic implications on the Iberian geodynamic framework are discussed. © 2003 Éditions scientifiques et médicales Elsevier SAS. All rights reserved.Elsevier2010-11-19T11:04:46Z2010-11-192003-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article116489 bytesapplication/pdfhttp://hdl.handle.net/10174/2216http://hdl.handle.net/10174/2216eng649–663Geobios36livreGEOndndndndndndndndndaaraujo@uevora.pt395Chaminé, H. I.Gama Pereira, L. C.Fonseca, P. E.Fernandes, J. P.Rocha, F. T.Flores, D.Pinto de Jesus, A.Gomes, C.Soares de Andrade, A. AAraújo, A. A.info: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:RCAAP2024-01-03T18:37:49Zoai:dspace.uevora.pt:10174/2216Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:57:40.917823Repositório 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 |
Tectonostratigraphy of Middle and Upper Palaeozoic black shales from the Porto-Tomar-Ferreira do Alentejo shear zone (W Portugal): new perspectives on the Iberian Massif Tectonostratigraphie du Paleozoïque moyen-supérieur de la bande de cisaillement Porto-Tomar-Ferreira de l’Alentejo (Ouest du Portugal) : nouvelles perspectives pour le Massif Ibérique |
title |
Tectonostratigraphy of Middle and Upper Palaeozoic black shales from the Porto-Tomar-Ferreira do Alentejo shear zone (W Portugal): new perspectives on the Iberian Massif |
spellingShingle |
Tectonostratigraphy of Middle and Upper Palaeozoic black shales from the Porto-Tomar-Ferreira do Alentejo shear zone (W Portugal): new perspectives on the Iberian Massif Chaminé, H. I. Devonian Carboniferous Tectonostratigraphy Palynomorphs Porto-Tomar-Ferreira do Alentejo Shear Zone IberianVariscides |
title_short |
Tectonostratigraphy of Middle and Upper Palaeozoic black shales from the Porto-Tomar-Ferreira do Alentejo shear zone (W Portugal): new perspectives on the Iberian Massif |
title_full |
Tectonostratigraphy of Middle and Upper Palaeozoic black shales from the Porto-Tomar-Ferreira do Alentejo shear zone (W Portugal): new perspectives on the Iberian Massif |
title_fullStr |
Tectonostratigraphy of Middle and Upper Palaeozoic black shales from the Porto-Tomar-Ferreira do Alentejo shear zone (W Portugal): new perspectives on the Iberian Massif |
title_full_unstemmed |
Tectonostratigraphy of Middle and Upper Palaeozoic black shales from the Porto-Tomar-Ferreira do Alentejo shear zone (W Portugal): new perspectives on the Iberian Massif |
title_sort |
Tectonostratigraphy of Middle and Upper Palaeozoic black shales from the Porto-Tomar-Ferreira do Alentejo shear zone (W Portugal): new perspectives on the Iberian Massif |
author |
Chaminé, H. I. |
author_facet |
Chaminé, H. I. Gama Pereira, L. C. Fonseca, P. E. Fernandes, J. P. Rocha, F. T. Flores, D. Pinto de Jesus, A. Gomes, C. Soares de Andrade, A. A Araújo, A. A. |
author_role |
author |
author2 |
Gama Pereira, L. C. Fonseca, P. E. Fernandes, J. P. Rocha, F. T. Flores, D. Pinto de Jesus, A. Gomes, C. Soares de Andrade, A. A Araújo, A. A. |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Chaminé, H. I. Gama Pereira, L. C. Fonseca, P. E. Fernandes, J. P. Rocha, F. T. Flores, D. Pinto de Jesus, A. Gomes, C. Soares de Andrade, A. A Araújo, A. A. |
dc.subject.por.fl_str_mv |
Devonian Carboniferous Tectonostratigraphy Palynomorphs Porto-Tomar-Ferreira do Alentejo Shear Zone IberianVariscides |
topic |
Devonian Carboniferous Tectonostratigraphy Palynomorphs Porto-Tomar-Ferreira do Alentejo Shear Zone IberianVariscides |
description |
Abstract Middle/late Devonian and early Carboniferous metasedimentary sequences in the northernmost region (Porto-Espinho-Tomar) of the Ossa-Morena Zone (Portuguese Iberian Variscan Massif) contain black shales of very low to low-grade metamorphism. These metasedimentary rocks form a discrete NNW-SSE structure within a major shear zone (Porto-Tomar-Ferreira do Alentejo) and remain subparallel to the observed regional major structures (folding, thrusts or overthrusts). These black shales are overhanged and then imbricated in an upper Proterozoic metamorphic substratum. A multi-disciplinary study of these metasedimentary rocks from the Espinho-Tomar region has tectonostratigraphy, palynology, organic petrology and clay mineralogy combined methods. This approach provides new insights into the tectonic evolution and geological framework of Palaeozoic basement of the IberianVariscides. Palaeoenvironmental and tectonostratigraphic implications on the Iberian geodynamic framework are discussed. © 2003 Éditions scientifiques et médicales Elsevier SAS. All rights reserved. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-01-01T00:00:00Z 2010-11-19T11:04:46Z 2010-11-19 |
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/10174/2216 http://hdl.handle.net/10174/2216 |
url |
http://hdl.handle.net/10174/2216 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
649–663 Geobios 36 livre GEO nd nd nd nd nd nd nd nd nd aaraujo@uevora.pt 395 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
116489 bytes application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
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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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