6篇
您的检索式：作者名="WANG XuanCe"
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| 1 | Role of mantle-derived magma in genesis of early Yanshanian granites in the Nanling Range, South China: in situ zircon Hf-O isotopic constraints显示文摘Although a number of petrographic observations and isotopic data suggest that magma mixing is common in genesis of many granite plutons, it is still controversial whether the mantle-derived magmas were involved in granites. We carried out in this study a systematic analysis of in situ zircon Hf-O isotopes for three early Yanshanian intrusions dated at ca. 160 Ma from the Nanling Range of Southeast China. The Qinghu monzonite has very homogeneous zircon Hf-O isotopic compositions, εHf(t) =11.6±0.3 and δ18O=5.4‰±0.3‰. In combination with whole-rock geochemical and Sr-Nd isotopic data, the parental magma of the Qinghu monzonite were likely derived from the partial melting of recently-metasomatized, phlogopite-bearing lithospheric mantle without appreciable crustal contamination. The Lisong and Fogang granites and the mafic microgranular enclaves (MME) within the Lisong granites have a wide range of zircon Hf-O isotopic compositions, with Hf and O isotopes being negatively correlated within each pluton. The Lisong MMEs were crystallized from a mantle-derived magma, similar to the parental magma of the Qinghu monzonite, with small amount of crustal assimilation. The Lisong and Fogang granites were formed by reworking of meta-sedimentary materials by mantle-derived magmas and mixing of the mantle-and sediment-derived melts to varying degrees. It is thus concluded that these two Yanshanian granites in the Nanling Range were formed associated with growth and differentiation of continental crust. | LI XianHua LI WuXian WANG XuanCe LI QiuLi LIU Yu TANG GuoQiang | 2009 | Science China Earth Sciences2009，52，9： | 101 |
| 2 | Thermodynamic evolution of lithosphere of the North China craton:Records from lower crust and upper mantle xenoliths from Hannuoba显示文摘Major element compositions of garnet, clino-pyroxene, orthopyroxene and spinel in the garnet-bearing lower crust and upper mantle xenoliths from Hannuoba, North China craton are analyzed by the electron microprobe (EMP). The pressure-temperature estimates reveal the in-creasing temperature and pressure from core to rim for granulites. In contrast, mantle xenoliths with core tempera-ture > 930℃ recorded a history of decrease in temperature and pressure. However, those with core temperature < 930℃ show a negligible change. The final pressures recorded by these xenoliths cluster at 0.9—1.5 GPa. The presence of high- Na2O cpx in granulite xenoliths suggests that they are prod-ucts of the transition from granulite to eclogite metamor-phism corresponding to the increasing temperature and pressure. Together with previous studies, it is suggested that the P-T changes preserved in the xenoliths are related to lithospheric thickening and subsequent thinning prior to their eruption in the Cenozoic. | LIU Yongsheng GAO Shan LIU Xiaoming CHEN Xiaoming ZHANG Wenlan WANG Xuance | 2003 | Chinese Science Bulletin2003，48，21： | 6 |
| 3 | The Willouran basic province of South Australia: Its relation to the Guibei large ig- neous province in South China and the breakup of Rodinia 显示文摘 | Wang Xuance Li Xianhua Li Zhengxiang | 2010 | Lithos2010，119，： | 1 |
| 4 | The Bikou basalts in the northwestern Yangtze block, South China: Remnants of 820- 810 Ma continental flood basalts?显示文摘 | Wang Xuance Li Xianhua Li Wuxian | 2008 | Geological Society of American Bulletin2008，120，： | 1 |
| 5 | Geochemical and Hf-Nd isotope data of Nanhua rift sedimentary and volcaniclastic rocks indicate a Neoproterozoic continental flood basalt provenance显示文摘 | Wang Xuance Li Zhengxiang Li Xianhua | 2011 | Lithos2011，127，： | 1 |
| 6 | SIMS U-Pb zircon geochronology of porphyry Cu-Au-(Mo) deposits in the Yangtze River Metallogenic Belt, eastern China:Magmatic response to early Cretaceous lithospheric extension显示文摘 | Li Xianhua Li Wuxian Wang Xuance | 2010 | Lithos2010，119，： | 1 |
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