IOCAS-IR  > 海洋地质与环境重点实验室
Interactions of the Greater Ontong Java mantle plume component with the Osbourn Trough
Zhang, Guo-Liang1,2; Li, Chao3
2016-11-21
Source PublicationSCIENTIFIC REPORTS
Volume6
SubtypeArticle
AbstractThe Ontong Java-Manihiki-Hikurangi plateau (OJMHP) is considered to have originated from a starting mantle plume, and have been rifted apart by two spreading ridges. However, the ages of these spreading ridges and their possible interactions with the presumed mantle plume are unclear. The Manihiki-Hikurangi plateau has been rifted apart by the Osbourn Trough which formed the southwestern Pacific crust to the east of the Tonga-Kermadec trench. Here we report Pb-Hf-Os isotopes of the basaltic crust (Site U1365 of IODP Expedition 329) formed by the Osbourn Trough. Linear regression of Re-Os isotopes results in an age of 103.7 +/- 2.3 Ma for Site U1365 basalts, indicating that the Manihiki-Hikurangi plateau was rifted apart by the Osbourn Trough with a spreading rate of similar to 190 mm/yr. The superfast spreading rate supports the Osbourn as an abandoned segment of the early Pacific spreading ridge, which initially overlapped with the giant starting plume. Moreover, the Pb-Hf isotopes of some of Site U1365 basalts show distinct differences from those of the Pacific mid-ocean ridge basalts, while they are similar to the basalts of the Ontong Java and Manihiki plateaus. We suggest that the OJMHP mantle plume components has been involved by the Osbourn spreading center.
DOI10.1038/srep37561
Indexed BySCI
Language英语
WOS IDWOS:000388083800001
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/136211
Collection海洋地质与环境重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China
3.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhang, Guo-Liang,Li, Chao. Interactions of the Greater Ontong Java mantle plume component with the Osbourn Trough[J]. SCIENTIFIC REPORTS,2016,6.
APA Zhang, Guo-Liang,&Li, Chao.(2016).Interactions of the Greater Ontong Java mantle plume component with the Osbourn Trough.SCIENTIFIC REPORTS,6.
MLA Zhang, Guo-Liang,et al."Interactions of the Greater Ontong Java mantle plume component with the Osbourn Trough".SCIENTIFIC REPORTS 6(2016).
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