Magnetic properties of some tholeiitic basalts dredged from the Gulf of California, Mexico

Detalhes bibliográficos
Autor(a) principal: Urrutia-Fucugauchi, J.
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/10400.3/4921
Resumo: International Symposium on the Activity of Oceanic Volcanoes. Ponta Delgada, 4-9 August 1980.
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spelling Magnetic properties of some tholeiitic basalts dredged from the Gulf of California, MexicoGeochemistryPetrologyInternational Symposium on the Activity of Oceanic Volcanoes. Ponta Delgada, 4-9 August 1980.This study is based on dredged samples collected from the mouth of the Gulf of California, a young opening oceanic basin. The samples are distributed between the East Pacific Rise crest and the Baja California continental slope. Ages are assigned on their position relative to magnetic anomalies and bathymetric profiles. Results from (1) non-destructive measurements, e.g. NRM intensity and direction, initial susceptibility, magnetic anisotropy and viscosity effects; (2) semi-destructive measurements, e.g. ARM acquisition and AF demagnetization of NRM and ARM; and (3) destructive measurements, e.g. viscous-partial TRM acquisition, are presented. Geochemical results of major and trace elements, including REE, are also presented. The samples show increasing alteration effects and enrichment of light-REE with distance away from the rise crest. Among the results we may mention: (1) the intensity pattern does not conform that usually expected for profiles normal to spreading centers; (2) low temperature weathering is of considerable importance, and its effects correlate well with time; (3) viscous effects at high temperatures (up to 200-300° C) are important in controlling the intensity pattern; and ( 4) magnetic anisotropy may constitute an alternative feature for determining orientation of dredged basalts.Universidade dos AçoresRepositório da Universidade dos AçoresUrrutia-Fucugauchi, J.2018-12-03T15:38:43Z1982-071982-07-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.3/4921engURRUTIA-FUCUGAUCHI, J. (1982). Magnetic properties of some tholeiitic basalts dredged from the Gulf of California, Mexico. "Arquipélago. Série Ciências da Natureza", 3: 43-44.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:RCAAP2022-12-20T14:33:11Zoai:repositorio.uac.pt:10400.3/4921Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:27:14.562389Repositório 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 Magnetic properties of some tholeiitic basalts dredged from the Gulf of California, Mexico
title Magnetic properties of some tholeiitic basalts dredged from the Gulf of California, Mexico
spellingShingle Magnetic properties of some tholeiitic basalts dredged from the Gulf of California, Mexico
Urrutia-Fucugauchi, J.
Geochemistry
Petrology
title_short Magnetic properties of some tholeiitic basalts dredged from the Gulf of California, Mexico
title_full Magnetic properties of some tholeiitic basalts dredged from the Gulf of California, Mexico
title_fullStr Magnetic properties of some tholeiitic basalts dredged from the Gulf of California, Mexico
title_full_unstemmed Magnetic properties of some tholeiitic basalts dredged from the Gulf of California, Mexico
title_sort Magnetic properties of some tholeiitic basalts dredged from the Gulf of California, Mexico
author Urrutia-Fucugauchi, J.
author_facet Urrutia-Fucugauchi, J.
author_role author
dc.contributor.none.fl_str_mv Repositório da Universidade dos Açores
dc.contributor.author.fl_str_mv Urrutia-Fucugauchi, J.
dc.subject.por.fl_str_mv Geochemistry
Petrology
topic Geochemistry
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
2018-12-03T15:38:43Z
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/10400.3/4921
url http://hdl.handle.net/10400.3/4921
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv URRUTIA-FUCUGAUCHI, J. (1982). Magnetic properties of some tholeiitic basalts dredged from the Gulf of California, Mexico. "Arquipélago. Série Ciências da Natureza", 3: 43-44.
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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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)
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