Ca. 1.5 Ga mafic magmatism in South China during the break-up of the supercontinent Nuna/Columbia: The Zhuqing Fe-Ti-V oxide ore-bearing mafic intrusions in western Yangtze Block

	Ca. 1.5 Ga mafic magmatism in South China during the break-up of the supercontinent Nuna/Columbia: The Zhuqing Fe-Ti-V oxide ore-bearing mafic intrusions in western Yangtze Block
	Hong-Peng Fan; Wei-Guang Zhu; Zheng-Xiang Li; Hong Zhong; Zhong-Jie Bai; De-Feng He; Cai-Jie Chend, Chong-Yong Cao
	2013
Source Publication	Lithos
Volume	168 Issue:1 Pages:85-98
Abstract	Secondary ion mass spectroscopy (SIMS) zircon and baddeleyite U-Pb ages, elemental, and Nd isotopic data are reported for the Zhuqing Fe-Ti-V oxide ore-bearing mafic intrusions in western Yangtze Block, South China. The mafic intrusions are dated at 1494 +/- 6 Ma (zircon U-Pb), 1486 +/- 3 Ma (baddeleyite U-Pb) and 1490 +/- 4 Ma (baddeleyite U-Pb). The intrusions are dominantly gabbros that experienced variable degrees of alteration. All the studied rocks are high-Ti and alkaline in composition, and exhibit light rare earth element enrichment and "humped" incompatible trace-element patterns with no obvious Nb-Ta depletion, similar to intraplate alkali basaltic rocks in continental flood basalt (CFB) and ocean island basalt (OIB) provinces. Negative epsilon(Nd)(T) values (-0.97 to -3.58) and fractionation of the HREE of these rocks indicate that they were derived from a time-integrated, slightly enriched asthenospheric mantle source with minor crustal contamination. Like other Fe-Ti oxide mineralized rocks in plume-related layered intrusions or large igneous provinces around the world, the Zhuqing gabbros likely occurred in an intraplate setting. The similar to 1.5 Ga mafic magmatism was likely part of the global 1.6-1.2 Ga anorogenic magmatism related to the break-up of the supercontinent Nuna/Columbia, suggesting that the Yangtze Block may have been a component of the supercontinent.
Subject Area	矿床地球化学
Indexed By	SCI
Language	英语
Document Type	期刊论文
Identifier	http://ir.gyig.ac.cn/handle/352002/5086
Collection	矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文矿床地球化学国家重点实验室
Recommended Citation GB/T 7714	Hong-Peng Fan,Wei-Guang Zhu,Zheng-Xiang Li,et al. Ca. 1.5 Ga mafic magmatism in South China during the break-up of the supercontinent Nuna/Columbia: The Zhuqing Fe-Ti-V oxide ore-bearing mafic intrusions in western Yangtze Block[J]. Lithos,2013,168(1):85-98.
APA	Hong-Peng Fan.,Wei-Guang Zhu.,Zheng-Xiang Li.,Hong Zhong.,Zhong-Jie Bai.,...&Cai-Jie Chend, Chong-Yong Cao.(2013).Ca. 1.5 Ga mafic magmatism in South China during the break-up of the supercontinent Nuna/Columbia: The Zhuqing Fe-Ti-V oxide ore-bearing mafic intrusions in western Yangtze Block.Lithos,168(1),85-98.
MLA	Hong-Peng Fan,et al."Ca. 1.5 Ga mafic magmatism in South China during the break-up of the supercontinent Nuna/Columbia: The Zhuqing Fe-Ti-V oxide ore-bearing mafic intrusions in western Yangtze Block".Lithos 168.1(2013):85-98.

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