Interactions of the Greater Ontong Java mantle plume component with the Osbourn Trough

doi:10.1038/srep37561

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-Liang 1,2; Li, Chao 3
	2016-11-21
发表期刊	SCIENTIFIC REPORTS
卷号	6
文章类型	Article
摘要	The 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.
DOI	10.1038/srep37561
收录类别	SCI
语种	英语
WOS记录号	WOS:000388083800001
引用统计	被引频次：19[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.qdio.ac.cn/handle/337002/136211
专题	海洋地质与环境重点实验室
作者单位	1.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
第一作者单位	中国科学院海洋研究所
推荐引用方式 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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