Plagioclase accumulation and phenocryst reaction in oceanic tholeiite: an indication of spreading rate
Autor(a) principal: | |
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Data de Publicação: | 1982 |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.3/4894 |
Resumo: | International Symposium on the Activity of Oceanic Volcanoes. Ponta Delgada, 4-9 August 1980. |
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Plagioclase accumulation and phenocryst reaction in oceanic tholeiite: an indication of spreading rateGeologyLithologyPetrologyInternational Symposium on the Activity of Oceanic Volcanoes. Ponta Delgada, 4-9 August 1980.A comparison of basalt lithology and chemistry for different mid-ocean ridge spreading axes indicates: (1) basalt generated at slow spreading axes (< 5 cm/yr, e.g. Mid-Atlantic Ridge) reflects widespread flotation of calcic plagioclase and phenocryst-liquid reaction; (2) basalt generated at fast-spreading axes (> 5 cm/yr, e.g., Juan de Fuca Ridge, Galapagos spreading Center, East Pacific Rise) is invariably aphyric or sparsely phyric, phenocrysts if present representing low pressure Iiquidus crystallization products. Interestingly, basalt generated at intermediate spreading rates (e.g., Costa Rica Rift, Gorda Rise, Gulf of California shows incipient development of the «slow-spreading» petrographic tendencies. […].Universidade dos AçoresRepositório da Universidade dos AçoresFlower, Martin F. J.2018-11-28T12:19:48Z1982-071982-07-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.3/4894engFLOWER, Martin F. J. (1982). Plagioclase accumulation and phenocryst reaction in oceanic tholeiite: an indication of spreading rate. "Arquipélago. Série Ciências da Natureza", 3: 249-250.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:RCAAP2022-12-20T14:33:09Zoai:repositorio.uac.pt:10400.3/4894Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:27:13.264201Repositório 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 |
Plagioclase accumulation and phenocryst reaction in oceanic tholeiite: an indication of spreading rate |
title |
Plagioclase accumulation and phenocryst reaction in oceanic tholeiite: an indication of spreading rate |
spellingShingle |
Plagioclase accumulation and phenocryst reaction in oceanic tholeiite: an indication of spreading rate Flower, Martin F. J. Geology Lithology Petrology |
title_short |
Plagioclase accumulation and phenocryst reaction in oceanic tholeiite: an indication of spreading rate |
title_full |
Plagioclase accumulation and phenocryst reaction in oceanic tholeiite: an indication of spreading rate |
title_fullStr |
Plagioclase accumulation and phenocryst reaction in oceanic tholeiite: an indication of spreading rate |
title_full_unstemmed |
Plagioclase accumulation and phenocryst reaction in oceanic tholeiite: an indication of spreading rate |
title_sort |
Plagioclase accumulation and phenocryst reaction in oceanic tholeiite: an indication of spreading rate |
author |
Flower, Martin F. J. |
author_facet |
Flower, Martin F. J. |
author_role |
author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade dos Açores |
dc.contributor.author.fl_str_mv |
Flower, Martin F. J. |
dc.subject.por.fl_str_mv |
Geology Lithology Petrology |
topic |
Geology Lithology Petrology |
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 2018-11-28T12:19:48Z |
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/10400.3/4894 |
url |
http://hdl.handle.net/10400.3/4894 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
FLOWER, Martin F. J. (1982). Plagioclase accumulation and phenocryst reaction in oceanic tholeiite: an indication of spreading rate. "Arquipélago. Série Ciências da Natureza", 3: 249-250. |
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 |
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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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1799130727199014912 |