Axial seamount basalts in P3 segment of Phoenix Ridge, Drake passage Antarctica: K-Ar age determination and geochemistry SCOPUS KCI

DC Field Value Language Lee, J.I. - Hur, S.D. - Lee, M.J. - Kim, K.J. - Nagao, K. - 2020-04-21T06:40:23Z - 2020-04-21T06:40:23Z - 2020-01-28 - 2003 -
dc.identifier.issn 1598-141X -
dc.identifier.uri -
dc.description.abstract The axial seamount basalts in the P3 segment of the Phoenix Ridge were obtained from dredging and the K-Ar age determination and whole-rock geochemical analyses have been done for understanding their origin. The K-Ar ages for PR2 basalts sampled from 1,000 m below sea level are 2.6 - 2.2 Ma and those for PR3 basalts from 800 m are 1.6-1.5 Ma. The younger ages towards the crest of the seamount indicate that this submarine volcano has been grown by central eruptions. The youngest age of about 1.5 Ma for PR3 basalts corresponds to the final eruption period of this volcano. The seamount basalts contain small amounts of normative quartz and olivine. They have transitional geochemical nature between alkaline- and subalkaline-series basalts. Trace and rare earth elements compositions of the seamount basalts are very similar to those of ocean island basalts (OIB), and indicate that this seamount has been formed by a hotspot activity, not in association with a seafloor spreading. The melting degree from the source has decreased with time, and finally the volcanic activity has stopped when the basaltic magma reached mild alkaline composition. -
dc.description.uri 3 -
dc.language Korean -
dc.publisher Korea Ocean Research and Development Institute -
dc.title Axial seamount basalts in P3 segment of Phoenix Ridge, Drake passage Antarctica: K-Ar age determination and geochemistry -
dc.type Article -
dc.citation.endPage 118 -
dc.citation.startPage 107 -
dc.citation.title Ocean and Polar Research -
dc.citation.volume 25 -
dc.citation.number 1 -
dc.contributor.alternativeName 김규중 -
dc.identifier.bibliographicCitation Ocean and Polar Research, v.25, no.1, pp.107 - 118 -
dc.identifier.doi 10.4217/OPR.2003.25.1.107 -
dc.identifier.scopusid 2-s2.0-0037594710 -
dc.type.docType Article -
dc.identifier.kciid ART000855623 -
dc.description.journalClass 3 -
dc.description.isOpenAccess N -
dc.subject.keywordPlus basalt -
dc.subject.keywordPlus geochemistry -
dc.subject.keywordPlus hot spot -
dc.subject.keywordPlus ocean island basalt -
dc.subject.keywordPlus potassium-argon dating -
dc.subject.keywordPlus seamount -
dc.subject.keywordPlus submarine volcano -
dc.subject.keywordPlus Phoenix -
dc.subject.keywordAuthor Axial seamount -
dc.subject.keywordAuthor Hotspot-type volcanism -
dc.subject.keywordAuthor K-Ar age -
dc.subject.keywordAuthor Phoenix Ridge -
dc.description.journalRegisteredClass scopus -
dc.description.journalRegisteredClass kci -
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