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3篇 您的检索式:作者名="Ximing Rong"
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1Possible early Neoproterozoic magmatism associated with slab window in the Pingshui segment of the Jiangshan-Shaoxing suture zone: Evidence from zircon LA-ICP-MS U-Pb geochronology and geochemistry显示文摘We report here geochemical data, U-Pb zircon ages, and Hf isotopes for the high-Mg diorites (HMDs), Nb-enriched basaltic porphyrys (NEBPs) and plagiogranites (PLAGs) in the Pingshui segment of the Jiangshan-Shaoxing suture zone. The HMDs are characterized by high Mg# (>60), high Na and LREE contents, depletion of HREE and HFSE, and pronounced positive εNd(t) values of 7.0 to 7.7, similar to some adakitic high-Mg andesites. The NEBPs are relatively Na-rich (Na2O/K2O>6) and display high abundances of P2O5 (~1.00%), TiO2 (~3.08%) and HFSE (e.g., Nb=9.53-10.27 ppm). Their Nd isotopic compositions (εNd(t)=6.8-8.0) are comparable to those of the HMDs. The PLAGs are metaluminous (A/CNK=0.84-0.89) and sodic (Na2O/K2O>10). Their depletion in HFSE (e.g., Nb, Ta) is consistent with 'SSZ-type' plagiogranite. Zircon LA-ICP-MS U-Pb dating yields an age of 932±7 Ma for the HMD, 916±6 Ma for the NEBP, and 902±5 Ma for the PLAG, respectively, indicating that they were products of early Neoproterozoic magmatism. The PLAGs exhibit relatively high zircon Hf isotopes and positive εHf(t) values of 11.0 to 16.2, consistent with their Nd isotopic data (εNd(t)=7.5-8.4). Such features are similar to those of oceanic plagiogranites in ophiolites and distinct from those of crust-derived granites. The PLAGs were most likely derived from partial melting of subducted oceanic crust in an active continental margin. Considering these results in the context of the regional geology, we suggest that a slab window in the subducting oceanic crust between the Yangtze Block and Cathaysia Block was possibly the principal cause for the unique arc magmatism in the area. The upwelling asthenosphere below the slab window may have provided significant thermodynamic conditions.CHEN ZhiHong GUO KunYi DONG YongGuan CHEN Rong LI LongMing LIANG YiHong LI ChunHai YU XiMing ZHAO Ling XING GuangFu 2009Science China Earth Sciences2009,52,7:26
2Simple physical approach to reducing frictional and adhesive forces on a TiO2 surface via creating heterogeneous nanopores显示文摘An Rong Yu Qiuming Zhang Luzheng Zhu Yudan Guo Xiaojing Fu Shuangqin Li Licheng Wang Changsong Wu Ximing Liu Chang 2012Langmuir2012,28,15:1
3Spin filtering in transition-metal phthalocyanine molecules from first principles显示文摘用第一原则的计算,基于密度,功能的理论和 nonequilibrium 草地工作形式主义,我们通过金属酞毒学习了旋转运输(MPc, M=Ni, Fe,公司, Mn, Cr ) 分子与金 nanowire 电极连接了。我们发现 MnPc, FePc,和 CrPc 分子的设备展出与 CoPc 和 NiPc 相比过滤效果的完美的旋转。而且,否定微分抵抗出现在 FePc 分子的设备。在不同偏爱电压的传播系数进一步被介绍理解这现象。这些结果将在为未来纳米技术设计设备是有用的。Li Niu Huan Wang Lina Bai Ximing Rong Xiaojie Liu Hua Li Haitao Yin 2017Frontiers of physics2017,12,4:1
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