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dc.contributor.authorFan, H.
dc.contributor.authorZhu, W.
dc.contributor.authorLi, Zheng-Xiang
dc.contributor.authorZhong, H.
dc.contributor.authorBai, Z.
dc.contributor.authorHe, D.
dc.contributor.authorChen, C.
dc.contributor.authorCao, C.
dc.date.accessioned2017-01-30T15:38:10Z
dc.date.available2017-01-30T15:38:10Z
dc.date.created2014-03-16T20:01:15Z
dc.date.issued2013
dc.identifier.citationFan, Hong-Peng and Zhu, Wei-Guang and Li, Zheng-Xiang and Zhong, Hong and Bai, Zhong-Jie and He, De-Feng and Chen, Cai-Jie and Cao, Chong-Yong. 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. 168-169: pp. 85-98.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/48216
dc.identifier.doi10.1016/j.lithos.2013.02.004
dc.description.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 εNd(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 ~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.

dc.publisherElsevier BV
dc.subjectFe–Ti–V oxide ore
dc.subjectZircon and baddeleyite geochronology
dc.subjectYangtze Block
dc.subjectMafic intrusion
dc.subjectSupercontinent Nuna/Columbia
dc.subjectMesoproterozoic
dc.titleCa. 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
dc.typeJournal Article
dcterms.source.volume168-169
dcterms.source.startPage85
dcterms.source.endPage98
dcterms.source.issn0024-4937
dcterms.source.titleLithos
curtin.department
curtin.accessStatusFulltext not available


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