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
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–...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
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Elsevier BV
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/48216 |
| _version_ | 1848758048376487936 |
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| author | Fan, H. Zhu, W. Li, Zheng-Xiang Zhong, H. Bai, Z. He, D. Chen, C. Cao, C. |
| author_facet | Fan, H. Zhu, W. Li, Zheng-Xiang Zhong, H. Bai, Z. He, D. Chen, C. Cao, C. |
| author_sort | Fan, H. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T09:37:47Z |
| format | Journal Article |
| id | curtin-20.500.11937-48216 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:37:47Z |
| publishDate | 2013 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-482162017-09-13T14:22:14Z 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 Fan, H. Zhu, W. Li, Zheng-Xiang Zhong, H. Bai, Z. He, D. Chen, C. Cao, C. Fe–Ti–V oxide ore Zircon and baddeleyite geochronology Yangtze Block Mafic intrusion Supercontinent Nuna/Columbia Mesoproterozoic 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. 2013 Journal Article http://hdl.handle.net/20.500.11937/48216 10.1016/j.lithos.2013.02.004 Elsevier BV restricted |
| spellingShingle | Fe–Ti–V oxide ore Zircon and baddeleyite geochronology Yangtze Block Mafic intrusion Supercontinent Nuna/Columbia Mesoproterozoic Fan, H. Zhu, W. Li, Zheng-Xiang Zhong, H. Bai, Z. He, D. Chen, C. Cao, C. 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 |
| 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 |
| title_full | 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 |
| title_fullStr | 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 |
| title_full_unstemmed | 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 |
| title_short | 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 |
| title_sort | 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 |
| topic | Fe–Ti–V oxide ore Zircon and baddeleyite geochronology Yangtze Block Mafic intrusion Supercontinent Nuna/Columbia Mesoproterozoic |
| url | http://hdl.handle.net/20.500.11937/48216 |