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| 1 | Zircon LA-ICPMS study and petrogenesis simulation of Dahuabei pluton in the Wulashan area,Inner Mongolia显示文摘Dahuabei pluton in the Wulashan area,Inner Mongolia,is an alkaline and peraluminous granitic pluton.LA-ICPMS U-Pb dating of zircons indicates that this pluton crystallized at 330±10 Myr.The pluton did not experience apparent zircon fractionation.The consistent temperatures between Zr saturation(765℃) and the average zircon-rutile Ti equilibrium(780℃),together with zircon ages and their CL images,indicated that there were no inherited zircons in this pluton.Through the simulation of the dry-system crystallization process of magma cooling at 200 MPa and 1100-709℃,the phase diagram and composition evolution tendency of different phases were obtained.The magma reached its liquidus at 1069℃.Sanidine was the first crystallized phase;at 709℃the residual magma was less than 4%,and the range of 1069-719℃should be the most suitable approach to the real condition.It is shown that at least some part of the pluton underwent such isobaric equilibrium crystallization processes during its crystallization. | Dapeng Li Yuelong Chen Liemeng Chen Zhong Wang Jinbao Liu | 2009 | Progress in Natural Science:Materials International2009，19，12： | 11 |
| 2 | Magmatic Ni-Cu-(PGE) deposits in magma plumbing systems:Features,formation and exploration显示文摘为大、超级大的 magmatic 硫化物存款的形成的三个很关键的因素是:(1 ) 导出披风的 mafic-ultramafic 参予了存款的形成的大量岩浆;(2 ) 部分结晶化和外壳的污染,特别地从外壳的岩石的硫的输入,导致硫化物 immiscibility 和分离;并且(3 ) 在侵入预定硫化物集中。超级大的 magmatic Ni-Cu 硫化物存款在全世界在小 mafic-ultramafic 侵入被发现了,除了 Sudbury 存款。在过去的十年的研究在中国显示招待大、超级大的 magmatic 硫化物存款的侵入发生在岩浆水管,例如那些,包括 Jinchuan (Gansu ) , Yangliuping (四川) , Kalatongke (Xinjiang ) ,和 Hongqiling (吉林) 。开的岩浆系统提供完美的环境因为不能混合的硫化物的广泛的集中融化的岩浆水管,它被发现了沿着深地区性的差错发生。许多导出披风的岩浆的起源仔细与披风羽毛, intracontinental 裂缝,或 post-collisional 扩展被联系。尽管硫化物 immiscibility 源于外壳的污染,这被证实了,矿石也与父母岩浆,在硅酸盐岩浆之间的比率和不能混合的硫化物的性质有关的硫化物的等级融化,在硫化物之间的反应融化并且最新注射的硅酸盐岩浆,并且硫化物的分别融化。忍受矿石的侵入和硫化物矿石身体的地关系被墙岩石的地质的特征控制。在这份报纸,我们试图表明硫化物扔在将为进一步的探索提供指南的 magmatic 水管发生的 magmatic 的一般特征,形成机制,构造背景,和指示物。 | Xieyan Song Yushan Wang Liemeng Chen | 2011 | Geoscience Frontiers2011，2，3： | 9 |
| 3 | Generation of Permian Ni-Cu Sulfide Deposits in the East Tianshan(NW China) by Syn-collisional Mantle Derived Magmatism显示文摘A series of Ni-Cu sulfide deposits hosted in Early Permian mafic-ultramafic complexes occur along the^500km long linear Huangshan-Jingerquan belt in the East Tianshan at the southern margin of the Central Asian Orogenic Belt(Fig.1)(Zhou et al.,2004;Song and Li,2009;Song et al.,2011;Qin et al.,2011;Deng et al.,2014).Questions for genetic link between these deposits and | SONG Xieyan CHEN Liemeng DENG Yufeng XIE Wei | 2015 | Acta Geologica Sinica(English Edition)2015，89，A02： | 3 |
| 4 | Effects of melt percolation on the Re-Os systematics of continental mantle lithosphere: A case study of spinel peridotite xenoliths from Heilongjiang, NE China显示文摘Os isotope ratios of mantle peridotites have been considered to be largely immune to recent melt-rock interaction. However, Os isotope ratios and PGE (Platinum group elements) concentrations of the Yong'an xenoliths have been significantly modified by melt percolation, and are not suitable for determining the formation age of lithosphere mantle in Yong'an. In this study, the Yong'an spinel peridotite xenoliths are divided into two groups: N-Type and E-Type. The N-Type group including cpx (clinopyroxene)-poor lherzolite and harzburgite, shows a large variation of Cr#(sp) (13.2-48) and sulfur contents (from 171 ppm to below detection limit), whereas the E-Type peridotites are mainly refractory harzburgites and are characterized by high Cr#(sp) (35.3-42.2) and overall low sulfur contents (below 51 ppm). Both types show similar major and REE (rare earth element) patterns. Furthermore, the N-Type peridotites display a restricted range of iridium-group PGE (IPGE), Os/Ir and Ru/Ir ratios (Os/Ir = 0.64-1.12, Ru/Ir = 1.52-1.79) and variable palladium-group PGE (PPGE) contents (3.4-14.9 ppb), whereas the E-Type peridotites show a large variation of Os/Ir and Ru/Ir ratios (Os/Ir = 0.33-0.84, Ru/Ir = 0.94-1.6), and a restricted range of PPGE (4.3-6.9 ppb). 187Os/188Os ratios of E-Type peridotites are higher than those of N-Type peridotites at comparable fertility levels. These results suggest that N-Type peridotites may have been overprinted by metasomatism via small melt fractions, in which the percolation of the volatile-rich, small melt fractions only resulted in LILE (large ion lithophile element) enrichment of clinopyroxene, and their whole rock PGE contents and Re-Os isotope values were little changed. Moreover, E-Type peridotites may have been modified by melt-rock reaction involving relatively large melt fractions, which may result in the formation of secondary cpx and olivine and the removal of IPGE-bearing minerals such as Ru-Os-(Ir) alloys or laurite, followed by precipitation of secondary sulfides from melt with radiogenic isotopic signature. | YU SongYue SONG XieYan XU YiGang CHEN LieMeng LI Jie | 2012 | Science China Earth Sciences2012，55，6： | 1 |
| 5 | Lithium elemental and isotopic disequilibrium in minerals from peridotite xenoliths from Shangzhi, NE China: products of recent melt/fluid-peridotite interaction显示文摘Lithium elemental and isotopic disequilibrium has frequently been observed in the continental and oceanic mantle xenoliths, but its origin remains controversial. Here,we present a combined elemental and Li isotopic study on variably metasomatised peridotite xenoliths entrained in the Cenozoic basalts from Shangzhi in Northeast (NE) China that provides insight into this issue. Li concentration (0.3–2.7 ppm) and δ7 Li (mostly 2‰–6‰) in olivine from the Shangzhi peridotites are similar to the normal mantle values and show roughly negative correlations with the indices of melt extraction(such as modal olivine and whole rock MgO). These features are consistent with variable degrees of partial melting. In contrast, clinopyroxene from the Shangzhi xenoliths shows significant Li enrichment (0.9–6.1 ppm) and anomalously light δ7 Li (-13.8‰ to7.7‰) relative to normal mantle values. Such features can be explained by Li diffusion from silicate melts or Li-rich fluids occurring over a very short time(several minutes to several hours). Moreover, the light Li isotopic compositions preserved in some bulk samples also indicate that these percolated melts/fluids have not had enough time to isotopically equilibrate with the bulk peridotite. We thus emphasize that Li isotopic fractionation in the Shangzhi mantle xenoliths is mainly related to Li diffusion from silicate melts or Li-rich fluids that took place shortly before or coincident with their entrainment into the host magmas. | Shenghua Zhou Songyue Yu Ting Zhou Jiangbo Lan Jian Kang Liemeng Chen Junhao Hu | 2018 | Acta Geochimica2018，37，5： | 0 |
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