The historic eruptions of La Palma Island (Canaries)

Detalhes bibliográficos
Autor(a) principal: Hernandez-Pacheco, Alfredo
Data de Publicação: 1982
Outros Autores: Valls, M. C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.3/4915
Resumo: International Symposium on the Activity of Oceanic Volcanoes. Ponta Delgada, 4-9 August 1980.
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spelling The historic eruptions of La Palma Island (Canaries)PetrologyVolcanismLa Palma Island (Canaries)International Symposium on the Activity of Oceanic Volcanoes. Ponta Delgada, 4-9 August 1980.From the first contacts of the European navigators who first visited the Canary Islands, around the middle of the XIV century, 18 eruptions he.ve taken place of which seven occurred on the island of La Palma. A historic-bibliographic study as well as a detailed field work have enabled us to accurately determine the places, dates, duration and volcanological patterns as well as the petrology and geochemistry of this historic eruptive cycle. In every instance, alcaline basalitic lavas were emitted: true basalts, basanitoids and/or ankaramites. A differentiation process always took place in the magma chamber and a sequence from amphibole to olivine-bearing lavas was erupted. These variations of the chemistry and mineralogy of the lavas were related to the different stages of the emption and the height over sea level, where the corresponding eruptive vents opened. The two main structural trends of the historic subhistoric volcanism of La Palma are N 5° W and N 35° W. Both trends correspond to the predominant ones of the dike swarms of the Basal Complex of the island. The secondary trends, N 80° E and N 15° E, likewise coincide with the corresponding main directions of the dike swarms of the Basal complexes of La Gomera and Fuerteventura. The duration of these historic eruptions was between 1 to 3 months and the area covered with lava and pyroclasts was 37 km2, 5 % of the total surface of the island.Universidade dos AçoresRepositório da Universidade dos AçoresHernandez-Pacheco, AlfredoValls, M. C.2018-12-03T13:00:19Z1982-071982-07-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.3/4915engHERNANDEZ-PACHECO, Alfredo; VALLS, M. C. (1982). The historic eruptions of La Palma Island (Canaries). "Arquipélago. Série Ciências da Natureza", 3: 83-94.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:RCAAP2022-12-20T14:33:10Zoai:repositorio.uac.pt:10400.3/4915Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:27:14.293629Repositório 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 The historic eruptions of La Palma Island (Canaries)
title The historic eruptions of La Palma Island (Canaries)
spellingShingle The historic eruptions of La Palma Island (Canaries)
Hernandez-Pacheco, Alfredo
Petrology
Volcanism
La Palma Island (Canaries)
title_short The historic eruptions of La Palma Island (Canaries)
title_full The historic eruptions of La Palma Island (Canaries)
title_fullStr The historic eruptions of La Palma Island (Canaries)
title_full_unstemmed The historic eruptions of La Palma Island (Canaries)
title_sort The historic eruptions of La Palma Island (Canaries)
author Hernandez-Pacheco, Alfredo
author_facet Hernandez-Pacheco, Alfredo
Valls, M. C.
author_role author
author2 Valls, M. C.
author2_role author
dc.contributor.none.fl_str_mv Repositório da Universidade dos Açores
dc.contributor.author.fl_str_mv Hernandez-Pacheco, Alfredo
Valls, M. C.
dc.subject.por.fl_str_mv Petrology
Volcanism
La Palma Island (Canaries)
topic Petrology
Volcanism
La Palma Island (Canaries)
description International Symposium on the Activity of Oceanic Volcanoes. Ponta Delgada, 4-9 August 1980.
publishDate 1982
dc.date.none.fl_str_mv 1982-07
1982-07-01T00:00:00Z
2018-12-03T13:00:19Z
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/10400.3/4915
url http://hdl.handle.net/10400.3/4915
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv HERNANDEZ-PACHECO, Alfredo; VALLS, M. C. (1982). The historic eruptions of La Palma Island (Canaries). "Arquipélago. Série Ciências da Natureza", 3: 83-94.
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 Universidade dos Açores
publisher.none.fl_str_mv Universidade dos Açores
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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