TRACE ELEMENT AND SR-ND-PB-O ISOTOPIC SYSTEMS OF THE PANZHIHUA LAYERED GABBRO INTRUSION: CONSTRAINTS ON THE MANTLE SOURCE REGIONS AND ORIGIN OF V-TI-FE OXIDE DEPOSIT
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dc.contributor.author | Ai Y. | |
dc.contributor.author | Zhang Z. | |
dc.contributor.author | Zhao L. | |
dc.contributor.author | Yang T. | |
dc.contributor.author | Wang F. | |
dc.contributor.author | Hao Y. | |
dc.date.accessioned | 2024-09-03T09:56:15Z | |
dc.date.available | 2024-09-03T09:56:15Z | |
dc.date.issued | 2006 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=41838653 | |
dc.identifier.citation | Acta Geologica Sinica (English Edition), 2006, 80, 7, 995-1004 | |
dc.identifier.issn | 1000-9515 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/44827 | |
dc.description.abstract | The Panzhihua intrusion, a part of the Emeishan large igneous province, is one of typical V - Ti magnetite ore-bearing layered gabbro intrusions. The Sr, Nd and Pb isotopic data overlap the field of the Emeishan basalts and oceanic island basalts, which suggests a genetic relationship to mantle plume. The high ratio of La/Nb values (> 1) and negative Nb anomalies on the primitive mantle-normalized trace element patterns characterize the contamination of lithospheric mantle or crustal materials. However, the low δ18OSMOW (‰) values (<6) suggest the absence of crustal contamination. Thus, the Panzhihua intrusion can be produced by a partial melting of mantle plume and lithospheric mantle, but not underwent crustal contamination. Positive correlation between Mg# and P2O5 and negative correlation between P2O5 and FeO suggest that addition of P is not the key role for the separation of immiscible oxide melts. In contrast, negative correlation between Mg# and Fe2 O3/FeO ratios implies that the increasing of oxygen fugacity is very likely the main factor to induce immiscibility of oxide melt. | |
dc.subject | CRUSTAL CONTAMINATION | |
dc.subject | GABBRO | |
dc.subject | IMMISCIBILITY | |
dc.subject | LITHOSPHERIC MANTLE | |
dc.subject | MANTLE PLUME | |
dc.subject | OXYGEN FUGACITY | |
dc.subject | PANZHIHUA | |
dc.title | TRACE ELEMENT AND SR-ND-PB-O ISOTOPIC SYSTEMS OF THE PANZHIHUA LAYERED GABBRO INTRUSION: CONSTRAINTS ON THE MANTLE SOURCE REGIONS AND ORIGIN OF V-TI-FE OXIDE DEPOSIT | |
dc.type | Статья |
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