The Role of the Seismically Slow Central‐East Atlantic Anomaly in the Genesis of the Canary and Madeira Volcanic Provinces

Detalhes bibliográficos
Autor(a) principal: Civiero, Chiara
Data de Publicação: 2021
Outros Autores: Custódio, Susana, Neres, Marta, Schlaphorst, David, Mata, João, Silveira, Graça
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10451/56752
Resumo: An edited version of this paper was published by AGU. Copyright (2001) American Geophysical Union.
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spelling The Role of the Seismically Slow Central‐East Atlantic Anomaly in the Genesis of the Canary and Madeira Volcanic ProvincesCanary islandsMadeira islandVolcanismSeismic tomographyAn edited version of this paper was published by AGU. Copyright (2001) American Geophysical Union.The Canary and Madeira provinces in the Central-East Atlantic Ocean are characterized by an irregular spatio-temporal distribution of volcanism along the hotspot tracks, and several alternative scenarios have been suggested to explain it. Here, we combine results from seismic tomography, shear-wave splitting and gravity along with plate reconstruction constraints to investigate the mantle structure and dynamics beneath those provinces. We find that the Central-East Atlantic Anomaly (CEAA), which rises from the core-mantle boundary and stalls in the topmost lower mantle, is the deep source of distinct upper-mantle upwellings beneath the region. The upwellings detach intermittently from the top of the CEAA and appear to be at different evolutionary stages. We argue that the accumulation of plume material in the topmost lower mantle can play a key role in governing the first-order spatio-temporal irregularities in the distribution of hotspot volcanism.WileyRepositório da Universidade de LisboaCiviero, ChiaraCustódio, SusanaNeres, MartaSchlaphorst, DavidMata, JoãoSilveira, Graça2023-03-22T11:30:03Z2021-06-162021-06-16T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10451/56752engCiviero, C., Custódio, S., Neres, M., Schlaphorst, D., Mata, J., & Silveira, G. (2021). The role of the seismically slow Central-East Atlantic Anomaly in the genesis of the Canary and Madeira volcanic provinces. Geophysical Research Letters, 48, e2021GL092874. https://doi.org/10.1029/2021GL09287410.1029/2021GL092874info: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:RCAAP2023-07-14T15:43:11ZPortal AgregadorONG
dc.title.none.fl_str_mv The Role of the Seismically Slow Central‐East Atlantic Anomaly in the Genesis of the Canary and Madeira Volcanic Provinces
title The Role of the Seismically Slow Central‐East Atlantic Anomaly in the Genesis of the Canary and Madeira Volcanic Provinces
spellingShingle The Role of the Seismically Slow Central‐East Atlantic Anomaly in the Genesis of the Canary and Madeira Volcanic Provinces
Civiero, Chiara
Canary islands
Madeira island
Volcanism
Seismic tomography
title_short The Role of the Seismically Slow Central‐East Atlantic Anomaly in the Genesis of the Canary and Madeira Volcanic Provinces
title_full The Role of the Seismically Slow Central‐East Atlantic Anomaly in the Genesis of the Canary and Madeira Volcanic Provinces
title_fullStr The Role of the Seismically Slow Central‐East Atlantic Anomaly in the Genesis of the Canary and Madeira Volcanic Provinces
title_full_unstemmed The Role of the Seismically Slow Central‐East Atlantic Anomaly in the Genesis of the Canary and Madeira Volcanic Provinces
title_sort The Role of the Seismically Slow Central‐East Atlantic Anomaly in the Genesis of the Canary and Madeira Volcanic Provinces
author Civiero, Chiara
author_facet Civiero, Chiara
Custódio, Susana
Neres, Marta
Schlaphorst, David
Mata, João
Silveira, Graça
author_role author
author2 Custódio, Susana
Neres, Marta
Schlaphorst, David
Mata, João
Silveira, Graça
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Civiero, Chiara
Custódio, Susana
Neres, Marta
Schlaphorst, David
Mata, João
Silveira, Graça
dc.subject.por.fl_str_mv Canary islands
Madeira island
Volcanism
Seismic tomography
topic Canary islands
Madeira island
Volcanism
Seismic tomography
description An edited version of this paper was published by AGU. Copyright (2001) American Geophysical Union.
publishDate 2021
dc.date.none.fl_str_mv 2021-06-16
2021-06-16T00:00:00Z
2023-03-22T11:30:03Z
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/10451/56752
url http://hdl.handle.net/10451/56752
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Civiero, C., Custódio, S., Neres, M., Schlaphorst, D., Mata, J., & Silveira, G. (2021). The role of the seismically slow Central-East Atlantic Anomaly in the genesis of the Canary and Madeira volcanic provinces. Geophysical Research Letters, 48, e2021GL092874. https://doi.org/10.1029/2021GL092874
10.1029/2021GL092874
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 Wiley
publisher.none.fl_str_mv Wiley
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
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instacron_str RCAAP
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collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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