Mantle heterogeneity in the source region of mid-ocean ridge basalts along the northern Central Indian Ridge (8 degrees S-17 degrees S) SCIE SCOPUS
DC Field | Value | Language |
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dc.contributor.author | Kim, Jonguk | - |
dc.contributor.author | Pak, Sang-Joon | - |
dc.contributor.author | Moon, Jai-Woon | - |
dc.contributor.author | Lee, Sang-Mook | - |
dc.contributor.author | Oh, Jihye | - |
dc.contributor.author | Stuart, Finlay M. | - |
dc.date.accessioned | 2020-04-16T10:55:04Z | - |
dc.date.available | 2020-04-16T10:55:04Z | - |
dc.date.created | 2020-01-28 | - |
dc.date.issued | 2017-04 | - |
dc.identifier.issn | 1525-2027 | - |
dc.identifier.uri | https://sciwatch.kiost.ac.kr/handle/2020.kiost/1263 | - |
dc.description.abstract | The northern Central Indian Ridge (CIR) between 8 degrees S and 17 degrees S is composed of seven segments whose spreading rates increase southward from similar to 35 to similar to 40 mm/yr. During expeditions of R/V Onnuri to study hydrothermal activity on the northern CIR in 2009-2011, high-resolution multibeam mapping was conducted and ridge axis basalts were dredged. The major and trace element and Sr-Nd-Pb-He isotopic compositions of basaltic glasses dredged from the spreading axis require three mantle sources: depleted mantle and two distinct enriched mantle sources. The southern segments have Sr, Nd, and Pb that are a mix of depleted mantle and an enriched component as recorded in southern CIR MORB. This enrichment is indistinguishable from Re` union plume mantle, except for He isotopes. This suggests that the southern segments have incorporated a contribution of the fossil Re` union plume mantle, as the CIR migrated over hot-spot-modified mantle. The low He-3/He-4 (7.5-9.2 RA) of this enriched component may result from radiogenic He-4 ingrowth in the fossil Re` union mantle component. Basalts from the northern segments have high Pb-206/Pb-204 (18.53-19.15) and low Sr-87/Sr-86 (0.70286-0.70296) that are distinct from the Re` union plume but consistent with derivation from mantle with FOZO signature, albeit with He-3/He-4 (9.2-11.8 RA) that are higher than typical. The FOZO-like enriched mantle cannot be attributed to the track of a nearby mantle plume. Instead, this enrichment may have resulted from recycling oceanic crust, possibly accompanied by small plume activity. | - |
dc.description.uri | 1 | - |
dc.language | English | - |
dc.publisher | AMER GEOPHYSICAL UNION | - |
dc.subject | ISOTOPIC COMPOSITION | - |
dc.subject | TRIPLE JUNCTION | - |
dc.subject | OCEANIC-CRUST | - |
dc.subject | LA-FOURNAISE | - |
dc.subject | PLUMES | - |
dc.subject | ISLAND | - |
dc.subject | REUNION | - |
dc.subject | ORIGIN | - |
dc.subject | PB | - |
dc.subject | GEOCHEMISTRY | - |
dc.title | Mantle heterogeneity in the source region of mid-ocean ridge basalts along the northern Central Indian Ridge (8 degrees S-17 degrees S) | - |
dc.type | Article | - |
dc.citation.endPage | 1434 | - |
dc.citation.startPage | 1419 | - |
dc.citation.title | GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS | - |
dc.citation.volume | 18 | - |
dc.citation.number | 4 | - |
dc.contributor.alternativeName | 김종욱 | - |
dc.contributor.alternativeName | 박상준 | - |
dc.contributor.alternativeName | 문재운 | - |
dc.contributor.alternativeName | 오지혜 | - |
dc.identifier.bibliographicCitation | GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS, v.18, no.4, pp.1419 - 1434 | - |
dc.identifier.doi | 10.1002/2016GC006673 | - |
dc.identifier.scopusid | 2-s2.0-85017472999 | - |
dc.identifier.wosid | 000403478500007 | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | ISOTOPIC COMPOSITION | - |
dc.subject.keywordPlus | TRIPLE JUNCTION | - |
dc.subject.keywordPlus | OCEANIC-CRUST | - |
dc.subject.keywordPlus | LA-FOURNAISE | - |
dc.subject.keywordPlus | PLUMES | - |
dc.subject.keywordPlus | ISLAND | - |
dc.subject.keywordPlus | REUNION | - |
dc.subject.keywordPlus | ORIGIN | - |
dc.subject.keywordPlus | PB | - |
dc.subject.keywordPlus | GEOCHEMISTRY | - |
dc.subject.keywordAuthor | Central Indian Ridge | - |
dc.subject.keywordAuthor | FOZO | - |
dc.subject.keywordAuthor | mantle heterogeneity | - |
dc.subject.keywordAuthor | MORB | - |
dc.subject.keywordAuthor | Rèunion hot spot | - |
dc.relation.journalWebOfScienceCategory | Geochemistry & Geophysics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Geochemistry & Geophysics | - |