气候变化领域集成服务门户(CCPortal): Petrogenesis of diabase from accretionary prism in the southern Qiangtang terrane, central Tibet: Evidence from U-Pb geochronology, petrochemistry and Sr-Nd-Hf-O isotope characteristics

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DOI	10.1111/iar.12107
	Petrogenesis of diabase from accretionary prism in the southern Qiangtang terrane, central Tibet: Evidence from U-Pb geochronology, petrochemistry and Sr-Nd-Hf-O isotope characteristics
	Li, Jin-Xiang; Qin, Ke-Zhang; Li, Guang-Ming; Zhao, Jun-Xing; Cao, Ming-Jian
通讯作者	Li, JX (通讯作者)
发表日期	2015
ISSN	1038-4871
EISSN	1440-1738
起始页码	232
结束页码	244
卷号	24 期号:2
英文摘要	The Bangong-Nujiang suture (BNS) between the Lhasa and Qiangtang terranes is an important boundary and its petrogenesis is controversial. Diabase from the accretionary prism in the southern Qiangtang terrane yields a zircon U-Pb age of 181.3 +/- 1.4Ma. All the diabases show tholeiitic basalt compositions, gentle enrichment patters of light rare earth elements (REE), variable enrichment in incompatible element concentrations (e.g. Th and Rb), and no anomaly in high field strength elements (e.g. Nb and Ta), similar to that of enriched mid-ocean ridge basalt (E-MORB). They have relatively homogeneous whole rock Nd (epsilon Nd(t)=7.3-9.1) and zircon Hf-O isotopic compositions (epsilon Hf(t)=14.8-16.1, and O-18=4.57-6.12 parts per thousand), possibly indicating melting of the depleted mantle and no significant crustal contamination during the petrogenesis. The element variations suggest that the diabases were formed by plume-ridge interaction at a mid-ocean ridge within the Bangong-Nujiang ocean.
关键词	ZIRCON REFERENCE MATERIAL PORPHYRY COPPER-DEPOSIT BANGONG-NUJIANG SUTURE TECTONIC EVOLUTION DEPLETED MANTLE NORTHERN TIBET TRACE-ELEMENTS OCEAN ISLAND LU-HF CONSTRAINTS
英文关键词	diabase; petrogenesis; Qiangtang terrane; Tibet; zircon Hf-O isotope
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000357300000010
来源期刊	ISLAND ARC
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258433
推荐引用方式 GB/T 7714	Li, Jin-Xiang,Qin, Ke-Zhang,Li, Guang-Ming,et al. Petrogenesis of diabase from accretionary prism in the southern Qiangtang terrane, central Tibet: Evidence from U-Pb geochronology, petrochemistry and Sr-Nd-Hf-O isotope characteristics[J]. 中国科学院青藏高原研究所,2015,24(2).
APA	Li, Jin-Xiang,Qin, Ke-Zhang,Li, Guang-Ming,Zhao, Jun-Xing,&Cao, Ming-Jian.(2015).Petrogenesis of diabase from accretionary prism in the southern Qiangtang terrane, central Tibet: Evidence from U-Pb geochronology, petrochemistry and Sr-Nd-Hf-O isotope characteristics.ISLAND ARC,24(2).
MLA	Li, Jin-Xiang,et al."Petrogenesis of diabase from accretionary prism in the southern Qiangtang terrane, central Tibet: Evidence from U-Pb geochronology, petrochemistry and Sr-Nd-Hf-O isotope characteristics".ISLAND ARC 24.2(2015).