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
dc.contributor.author | Fan, H. | |
dc.contributor.author | Zhu, W. | |
dc.contributor.author | Li, Zheng-Xiang | |
dc.contributor.author | Zhong, H. | |
dc.contributor.author | Bai, Z. | |
dc.contributor.author | He, D. | |
dc.contributor.author | Chen, C. | |
dc.contributor.author | Cao, C. | |
dc.date.accessioned | 2017-01-30T15:38:10Z | |
dc.date.available | 2017-01-30T15:38:10Z | |
dc.date.created | 2014-03-16T20:01:15Z | |
dc.date.issued | 2013 | |
dc.identifier.citation | Fan, 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.uri | http://hdl.handle.net/20.500.11937/48216 | |
dc.identifier.doi | 10.1016/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.publisher | Elsevier BV | |
dc.subject | Fe–Ti–V oxide ore | |
dc.subject | Zircon and baddeleyite geochronology | |
dc.subject | Yangtze Block | |
dc.subject | Mafic intrusion | |
dc.subject | Supercontinent Nuna/Columbia | |
dc.subject | Mesoproterozoic | |
dc.title | 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 | |
dc.type | Journal Article | |
dcterms.source.volume | 168-169 | |
dcterms.source.startPage | 85 | |
dcterms.source.endPage | 98 | |
dcterms.source.issn | 0024-4937 | |
dcterms.source.title | Lithos | |
curtin.department | ||
curtin.accessStatus | Fulltext not available |