Jointing patterns and tectonic evolution of the Maciço Calcário Estremenho, Lusitanian Basin, Portugal
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.9/3171 |
Resumo: | ABSTRACT: The Macico Calcario Estremenho (MCE) is an uplifted Jurassic limestone massif unit of the Lusitanian Basin, Portugal, where five main joint sets trending NNE-SSW, WSW-ENE, WNW-ESE, NW-SE, and NNW-SSE are recognized. Except for the NNW-SSE set, all the other sets host calcite veins and barren joints, evidencing a multistage development by several deformation episodes, including shear reactivation. Orthogonal patterns defined by the NNE-SSW/WNW-ESE and NNW-SSE/WSW-ENE systems are characteristic of some tectonos-tratigraphic units of the MCE, but the sets of each one of the systems are genetically independent. They result from specific deformation episodes undergone by the studied area in the course of its Meso-Cenozoic evolution. NNE-SSW calcite veins were the first to form during Middle Jurassic fault-controlled subsidence. A renewal of this set as barren joints took place during the Eocene Pyrenean compressive phase. The WSW-ENE and WNW-ESE sets have a restricted spatial distribution and relate to transient compressive episodes of the Middle - Late Jurassic and Jurassic - Cretaceous transitions, respectively. The NW-SE set, also characteristic of a specific region, formed during the Late Jurassic rifting and is related to local NE-SW tension dependent on block tilting towards a major NW-SE fault. The Miocene Betic compressive phase is responsible for the formation of the NNW-SSE set, which is widespread throughout the MCE. |
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Jointing patterns and tectonic evolution of the Maciço Calcário Estremenho, Lusitanian Basin, PortugalTectónicaMaciço Calcário Estremenho (Portugal)Bacia Lusitânica (Portugal)ABSTRACT: The Macico Calcario Estremenho (MCE) is an uplifted Jurassic limestone massif unit of the Lusitanian Basin, Portugal, where five main joint sets trending NNE-SSW, WSW-ENE, WNW-ESE, NW-SE, and NNW-SSE are recognized. Except for the NNW-SSE set, all the other sets host calcite veins and barren joints, evidencing a multistage development by several deformation episodes, including shear reactivation. Orthogonal patterns defined by the NNE-SSW/WNW-ESE and NNW-SSE/WSW-ENE systems are characteristic of some tectonos-tratigraphic units of the MCE, but the sets of each one of the systems are genetically independent. They result from specific deformation episodes undergone by the studied area in the course of its Meso-Cenozoic evolution. NNE-SSW calcite veins were the first to form during Middle Jurassic fault-controlled subsidence. A renewal of this set as barren joints took place during the Eocene Pyrenean compressive phase. The WSW-ENE and WNW-ESE sets have a restricted spatial distribution and relate to transient compressive episodes of the Middle - Late Jurassic and Jurassic - Cretaceous transitions, respectively. The NW-SE set, also characteristic of a specific region, formed during the Late Jurassic rifting and is related to local NE-SW tension dependent on block tilting towards a major NW-SE fault. The Miocene Betic compressive phase is responsible for the formation of the NNW-SSE set, which is widespread throughout the MCE.ElsevierRepositório do LNEGCarvalho, Jorge2019-03-20T16:07:58Z2018-01-01T00:00:00Z2018-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.9/3171engCarvalho, Jorge M.F. - Jointing patterns and tectonic evolution of the Maciço Calcário Estremenho, Lusitanian Basin, Portugal. In: Journal of Structural Geology, Vol. 110, 2018, p. 155-1710191-8141info: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:RCAAP2022-09-06T12:28:35Zoai:repositorio.lneg.pt:10400.9/3171Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:36:24.247037Repositório 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 |
Jointing patterns and tectonic evolution of the Maciço Calcário Estremenho, Lusitanian Basin, Portugal |
title |
Jointing patterns and tectonic evolution of the Maciço Calcário Estremenho, Lusitanian Basin, Portugal |
spellingShingle |
Jointing patterns and tectonic evolution of the Maciço Calcário Estremenho, Lusitanian Basin, Portugal Carvalho, Jorge Tectónica Maciço Calcário Estremenho (Portugal) Bacia Lusitânica (Portugal) |
title_short |
Jointing patterns and tectonic evolution of the Maciço Calcário Estremenho, Lusitanian Basin, Portugal |
title_full |
Jointing patterns and tectonic evolution of the Maciço Calcário Estremenho, Lusitanian Basin, Portugal |
title_fullStr |
Jointing patterns and tectonic evolution of the Maciço Calcário Estremenho, Lusitanian Basin, Portugal |
title_full_unstemmed |
Jointing patterns and tectonic evolution of the Maciço Calcário Estremenho, Lusitanian Basin, Portugal |
title_sort |
Jointing patterns and tectonic evolution of the Maciço Calcário Estremenho, Lusitanian Basin, Portugal |
author |
Carvalho, Jorge |
author_facet |
Carvalho, Jorge |
author_role |
author |
dc.contributor.none.fl_str_mv |
Repositório do LNEG |
dc.contributor.author.fl_str_mv |
Carvalho, Jorge |
dc.subject.por.fl_str_mv |
Tectónica Maciço Calcário Estremenho (Portugal) Bacia Lusitânica (Portugal) |
topic |
Tectónica Maciço Calcário Estremenho (Portugal) Bacia Lusitânica (Portugal) |
description |
ABSTRACT: The Macico Calcario Estremenho (MCE) is an uplifted Jurassic limestone massif unit of the Lusitanian Basin, Portugal, where five main joint sets trending NNE-SSW, WSW-ENE, WNW-ESE, NW-SE, and NNW-SSE are recognized. Except for the NNW-SSE set, all the other sets host calcite veins and barren joints, evidencing a multistage development by several deformation episodes, including shear reactivation. Orthogonal patterns defined by the NNE-SSW/WNW-ESE and NNW-SSE/WSW-ENE systems are characteristic of some tectonos-tratigraphic units of the MCE, but the sets of each one of the systems are genetically independent. They result from specific deformation episodes undergone by the studied area in the course of its Meso-Cenozoic evolution. NNE-SSW calcite veins were the first to form during Middle Jurassic fault-controlled subsidence. A renewal of this set as barren joints took place during the Eocene Pyrenean compressive phase. The WSW-ENE and WNW-ESE sets have a restricted spatial distribution and relate to transient compressive episodes of the Middle - Late Jurassic and Jurassic - Cretaceous transitions, respectively. The NW-SE set, also characteristic of a specific region, formed during the Late Jurassic rifting and is related to local NE-SW tension dependent on block tilting towards a major NW-SE fault. The Miocene Betic compressive phase is responsible for the formation of the NNW-SSE set, which is widespread throughout the MCE. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-01T00:00:00Z 2018-01-01T00:00:00Z 2019-03-20T16:07:58Z |
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/10400.9/3171 |
url |
http://hdl.handle.net/10400.9/3171 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Carvalho, Jorge M.F. - Jointing patterns and tectonic evolution of the Maciço Calcário Estremenho, Lusitanian Basin, Portugal. In: Journal of Structural Geology, Vol. 110, 2018, p. 155-171 0191-8141 |
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 |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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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1799130230143582208 |