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25篇 您的检索式:作者名="Yuwang Wang"
    题名 作者 年代 出处 被引量
1Geochemistry and SHRIMP Zircon U-Pb Age of Post-Collisional Granites in the Southwest Tianshan Orogenic Belt of China:Examples from the Heiyingshan and Laohutai Plutons显示文摘摘要:Heiyingshan 花岗石和在西南 Tianshan 暴露的 Laohutai 花岗石 plutons geochemically 类似于 A 类型花岗石。分析证明两个是 ferron calc-alkalic peraluminous 或 ferron 有 SiO2 的相对高的集中的碱钙的 peraluminous (>70%) ,高碱内容(Na2O + K2O =7.14%-8.56% ;K2O > N2O;A/CNK = 0.99-1.20 ) ,并且在 Eu, Ba, Sr, P 和 Ti 的显著否定 anomales。285 楡? 汐瑵湯 ? 的虾锆石 U-Pb 年龄 ? 鯄 ? 鯄??LONG Lingli GAO Jun WANG Jingbin QIAN Qing XIONG Xianming WANG Yuwang WANG Lijuan GAO Liming 2008Acta Geologica Sinica(English Edition)2008,82,2:19
2Altered Wnt Signaling Pathway in Cognitive Impairment Caused by Chronic Intermittent Hypoxia: Focus on Glycogen Synthase Kinase-3β and β-catenin显示文摘Yue-Ying Pan Yan Deng Sheng Xie Zhi-Hua Wang YuWang Jie Ren Hui-Guo Liu 2016Chinese Medical Journal2016,,7:14
3Fluid-melt Inclusions in Fluorite of the Huanggangliang Skarn Iron-Tin Deposit and Their Significance to Mineralization显示文摘For the first time, fluid-melt inclusions are found in fluorite of the Huanggangliang skarn iron-tin deposit (HSID). The fluorite was formed in the main stage of mineralization, named the hydro-skarnization stage. The inclusions contain various components such as Fe, Mg and Cr from deep sources. The melts of primary inclusions are mainly Ca- and F-rich and those of secondary inclusions tend to become Si-rich. During this evolution process, the melts and iron daughter minerals decreased and even vanished. These facts reveal that the evolution of the primary mineralizing fluids and the differentiation of the fluids and melts are the main factors leading to the deposition of Fe, Sn and other elements. This discovery confirms the magmatic genesis of the HSID and has filled in the gaps in the research of magmatogenic skarn deposits and furnished new methods for such research. Furthermore, it has enlarged the scope of the research on fluid inclusions.WANG Lijuan WANG Jingbin WANG Yuwang MAO Qian 2001Acta Geologica Sinica(English Edition)2001,75,2:12
4The Tuerkubantao ophiolite melange in Xinjiang,NW China:New evidence for the Erqis suture zone显示文摘The extension of the suture zone between the Siberian and Kazakhstan continents in China has been a matter of debate because few outcrops of ophiolitic melange have been found so far.The recently found Tuerkubantao ophiolitic melange,which is located east of the Kekesentao Mt.in the Buerjin County of the Chinese Altay,provides an important clue for this problem.This paper presents the results of field investigation,petrology,U-Pb isotope dating of zircons and bulk-rock geochemistry of the Tuerkubantao melange rocks.The melange consists of fault-contacted ultramafic rocks,gabbro, diabase,basalt,flysch and granitoids.The ultramafic-mafic rocks are Mg-rich(Mg~#=4.25—6.35) and w(SiO_2) spans 38.8%—46.8%.Basalt and gabbro are geochemically similar and are characterized by low w(FeO^t)(10.9%),total alkali w(Na_2O+K_2O)=2.58%) and w(TiO_2)(1.17%) and affinity to the Mg-rich tholeiite series.The flat REE and trace-element patterns of the ultramafic-mafic rocks are indicative of their ophiolite origin,i.e.,formation in a mid-oceanic ridge setting.The fragments of low-K gneissic granite formed in suprasubduction or syn-collisional setting.Zircons from gabbro and gneissic granite yielded U-Pb ages of 363 and 355 Ma.respectively,suggesting Late Devonian mid-oceanic spreading and oceanic subduction accompanied by suprasubduction magmatism.The Tiierkubantao ophiolite together with the Qiaoxiahala and Buergen ophiolites of the Kekesentao belt define an ophiolitic melange belt extending along the Erqis fault.This belt probably belongs to the Ural-Zaisan -South Mongolian suture-shear zone formed during the subduction of the Paleo-Asian Ocean and subsequent collision of the Siberian and Kazakhstan continents.Yuwang Wang Jingbin Wang Lijuan Wang Lingli Long Pingzhi Tang Zhen Liao Huiqiong Zhang Yu Shi 2012Geoscience Frontiers2012,3,5:9
5Ore-forming fluid and mineralization of Caijiaying and Dajing polymetallic ore deposits显示文摘Fluid inclusions from the Dajing and Caijiaying deposits have nearly the same homogenization temperature. Correlation between temperature and salinity shows that both Sn- and Cu-bearing fluids Sn and Cu were present in the Dajing deposit but only one kind of fluids continuously evolved in the Caijiaying deposit. Study on rare earth elements (REE) in ancient fluid from the inclusions indicates that the fluid of Sn mineralizing stage in Dajing was derived from remelting magma of the continental crust, and the fluid of Cu-Pb-Zn mineralizing stage in the Dajing deposit and the fluid of Cu-Pb-Zn mineralization in the Caijiaying deposit were derived from the mantle. It is concluded that the Cu-Pb-Zn mineralizations in the Dajing and Caijiaying deposits resulted from the identical tectono-thermal event of magma-fluids induced by Mesozoic tectonic transition and extension in the eastern part of North China Craton.WANG Lijuan,WANG Jingbin, WANG Yuwang & ZHU Heping1. Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 2. Beijing Institute of Geology for Mineral Resources, Beijing 100012, China Correspondence should be addressed to Wang Lijuan (email: wlj@mail.igcas.ac.cn) 2004Science China Earth Sciences2004,47,2:8
6Physicochemical Control of the Early Permian Xiangshan Fe-Ti Oxide Deposit in Eastern Tianshan(Xinjiang),NW China显示文摘The Xiangshan mafic-ultramafic complex is one of the major Early Permian mafic-ultramafic intrusions in eastern Tianshan(Xinjiang, NW China), and consists of two major intrusive phases. The first intrusive phase is mainly gabbroic rocks hosting ilmenite mineralization, while the second intrusive phase is mainly lherzoilite associated with Ni-Cu sulfide mineralization. The Xiangshan ilmenite orebodies hosted in the Fe-Ti oxide-bearing gabbro occur along the contact between hornblende gabbros and leucogabbros. The hornblende gabbros and Fe-Ti oxide rich gabbros at Xiangshan are newly dated to be Early Permian(280.1 and 279.2 Ma, respectively). Major and trace element compositions of zircons and whole rocks from Xiangshan hornblende gabbro and Fe-Ti oxide gabbro have been measured by in situ excimer laser ablation ICP-MS. Zircon Ce^(4+)/Ce^(3+) ratios based on lattice-strain model and Ti-in-zircon temperatures of hornblende gabbro and Fe-Ti oxide gabbro of the Xiangshan complex are calculated to evaluate the physicochemical variations during the ilmenite mineralization. Whole-rock geochemistry and zircon trace element geochemistry suggest that Fe-Ti oxide gabbros were formed from a basaltic parent magma which had undergone a transfromation from being H_2O-rich to H_2O-poor. During the magmatic evolution, primitive, H_2O-poor basaltic melts may have been replenished into the system, increasing its solidus temperature and decreasing its oxygen fugacity and H_2O contents. This may have supperessed the Ti-rich poikilitic hornblende fractionation and promoted the plagioclase fractionation, which consequently concentrated the ore-forming components in the residual melts and generated the ilmenite mineralization.Yu Shi Yuwang Wang Jingbin Wang Lutong Zhao Hongjing Xie Lingli Long Tao Zou Dedong Li Guochao Zhou 2018Journal of Earth Science2018,29,3:6
7Metallogenic Series Related to Permian Mafic Complex in North Xinjiang:Post-collisional Stage or Mantle Plume Result?显示文摘与在北 Xinjiang 的二叠的 mafic 建筑群有关有四种沉积物类型,即,铜镍硫化物沉积物, vanadic titanomagnetite 沉积物,磁铁矿(-cobalt) 沉积物和 Cu-Ni-VTiFe 合成沉积物。沉积物是分布式的与靠近、连续的 metallogenic 年龄跨越构造单位。一种过渡沉积物类型能发生在结束成员沉积物之中。主人岩石的踪迹元素证明他们能源于类似的来源区域。因此,他们组成与也是中亚 Metallogenic 省(营地) 的 post-collisional 阶段的一个标志系列的 mafic-ultramafic 建筑群有关的一个特别 metallogenic 系列。系列的 metallogenic 年龄全部在 260 妈和 300 妈之间二叠。不同于从一根披风羽毛的矿化作用,这个系列的 metallogenic 时期跨越至少 40 妈。与 Emeishan 披风羽毛的相关存款相比,北方 Xinjiang 系列有一个类似的形成矿石的元素集合但是最好开发了 Cu-Ni 硫化物存款而非 vanadic titanomagnetite 存款。在有这个系列的共存,北方 Xinjiang 区域开发了与 felsic 有关的一套 syntectonic Au-Cu-Mo metallogenic 系列暴烈恼人的建筑群,它可能显示没有与披风羽毛活动的直接关系。从对早迟了,即,到磁铁矿的铜镍硫化物的顺序(-cobalt)到 vanadic titanomagnetite 沉积物,主人岩石系列从 mafic-ultramafic 和 tholeiite 系列演变到 mafic 和 alkalic 系列, REE 内容趋于与 REE 分别增加增加,并且一些踪迹元素(特别地 LIL )也显示出一个增加的趋势。上述进化整齐可能反映岩浆来源加深的一堂功课,热接口往下移,精力逐渐地用尽,并且新大陆人外壳在碰撞以后的阶段形成趋于稳定。WANG Yuwang WANG Jingbin WANG Lijuan LONG Lingli 2008Acta Geologica Sinica(English Edition)2008,82,4:6
8Minimum critical thickness of dike for ore-bearing fluid injection:A new approach applied to the Shihu gold deposit,Hebei Province,North China显示文摘根据由 transmagmatic 液体(TMF ) 的 metallogenic 理论,一 magmatic 侵入是忍受矿石的液体,然而并非他们的来源的一条隧道。因此,为注射使用 TMF 能力进并且为逃离 magmatic 侵入评估它的形成矿石的潜力是可能的。当当岩浆充分结晶时,忍受矿石的液体不能有效地注入 magmatic 侵入,改变的冷却时间和率粘性能被用来估计侵入的最小的批评厚度。一个维的热转移模型被用来在 Shihu 金存款为不同作文(花岗石斑岩,石英闪长岩和辉绿岩) 的三个代表性的堤决定冷却时间。它也估计率粘性在这些时间间隔变化了。我们作为最小的批评厚度在冷却时间厚度曲线对厚度曲线的交叉拿了堤的厚度。为有效地注入岩浆的忍受矿石的液体,为三个代表性的堤的最小的批评厚度是为花岗石斑岩,为石英闪长岩的 8.22 m 和为辉绿岩的 1.02 m 的 33.45 m,显示忍受矿石的堤一定比每价值厚。这些结果与矿石身体的出现一致,并且因此,他们能在实践被使用。基于在长度和堤的宽度之间的统计关系,这些批评厚度被用来计算批评区域:为辉绿岩,为石英闪长岩的 0.0140.068 km2 和为花岗石斑岩的 0.0110.034 km2 的 0.00030.0016 km2。这暗示忍受矿石的次要的侵入改变了相应于他们的作文的区域。数字模拟提供了忍受矿石的侵入的暴露的厚度和区域的理论阀值。这些价值能被用来决定堤的形成矿石的潜力。Dedong Li Yuwang Wang Jingbin Wang Zhaohua Luo Jiulong Zhou Zongfeng Yang Cui Liu 2012Geoscience Frontiers2012,3,5:6
9Fluid mineralization of the Dajing Sn-polymetal deposit: Evidence from LA-ICP-MS analysis of individual fluid inclusions显示文摘从 Dajing 存款的 Sn-Cu 矿石身体并且从 Huanggangliang 存款的 Sn 矿石身体在荧石和石英套住的单个液体包括上的 LA-ICP-MS 分析被进行用液体的 Rb/Sr 和 Sn/Cu 比率在 Dajing 存款跟踪 Cu 富有、 Sn 富有的液体的来源和进化。在 theDajing 的Cu富有的液体扔的结果表演,相对,在 Na 并且可能的富人源于深层的基本岩浆,包含 Cuseveral 到几多于 Sn ,和 Sr 的十时间几到几多于 Rb 的十时间,当时Sn富有的液体,相对,在 K 并且可能的富人源于高级花岗石的岩浆,包含 Sn 几到几多于 Cu ,和 Rb 的十时间几到几多于 Sr 的十时间。这被建议 Sn 富有并且 Cu 富有的液体在阶段被混合对低温度和低咸度中等,在 Dajing 存款的中央部分导致 Cu-Sn 矿石身体的形成。WANG Lijuan WANG Yuwang WANG Jingbin D Gunther 2006Chinese Science Bulletin2006,51,22:5
10A Preliminary Study on Fluid Inclusions and Mineralization of Xitieshan Sedimentary-Exhalative (SEDEX) Lead-Zinc Deposit显示文摘Xitieshan 铅锌存款在 Qaidam 盆的北边缘被定位, Qinghai 省,中国,并且开发了一个完全的海洋的 sedimentary-exhalative 系统。我们形成矿石的液体的初步的学习证明在从代表管子外形的改变的 stockwork 岩石的石英的液体包括有大量温度和咸度。强烈液体活动是 exhalative 系统的管子外形的特征。在在代表发泄近似的外形的厚床的云石招待的 unstratified 矿石身体附近的碳酸盐的液体包括在尺寸大并且有对高温度中等。他们代表 unerupted sub-seafloor 液体活动。在改变的 stockwork 岩石和碳酸盐中的液体有类似的 H2O-NaCl-CO2 系统,两个都属于 sedimentary-exhalative 系统。液体从管子外形移居到 unstratified 矿石身体。液体沸腾引起 CO2 蒸汽和液体 H2O 的分离。当液体移居进 unconsolidated 时,象进液体的海水的某参与一样的厚床的大理石, CO2 的逃跑,减少的温度和压力与形成矿石的材料的高、低的咸度和免职导致液体的 unmixing。二纯粹的液体在 unconsolidated 碳酸盐被套住,形成矿石的材料在 unconsolidated 碳酸盐被扔形成 sedimentary-exhalative 类型 unstratified 矿石身体。unstratified 矿石身体的形成矿石的温度直到显示在有一个巨大的形成矿石的潜力的高温度它的深。WANG Lijuan ZHU Xinyou WANG Jingbin DENG Jiniu WANG Yuwang ZHU Heping 2008Acta Geologica Sinica(English Edition)2008,82,4:4
11Petrogenesis and Metallogenesis of the Niumaoquan Gabbroic Intrusion Associated with Fe-Ti Oxide Ores in the Eastern Tianshan, NW China显示文摘The Niumaoquan layered gabbroic intrusion is in the southern margin of the Central Asian Orogenic Belt in North Xinjiang, China, and hosts a Fe-Ti oxide deposit in its evolved gabbroic phases. In this paper, we report zircon U-Pb age, Sr-Nd-Hf isotopes, plagioclase chemistry, and whole-rock geochemistry of the Niumaoquan layered gabbroic intrusion. Zircon grains separated from an anorthosite sample analyzed by laser ablation inductively coupled plasma mass spectrometry yielded a concordia age of 314.7±0.74 Ma, indicating that the Niumaoquan ore-bearing gabbroic intrusion was emplaced during the Late Carboniferous. The olivine gabbro texture and plagioclase chemistry suggest that plagioclase was an early crystallized silicate phase that crystallized prior to olivine. Fractional crystallization and accumulation of plagioclase significantly controlled the evolution of the Niumaoquan gabbroic intrusion and contributed to the formation of anorthosite layers, causing metallogenic elements to become enriched in the residual melt. The Niumaoquan gabbroic intrusion is characterized by the enrichment of large ion lithophile elements and depletion of high field strength elements, positive zircon εHf(t) values(+2.1 to +12.2), positive εNd(t) values(+3.3 to +5.2), and low initial ^(87)Sr/^(86)Sr ratios(0.7039 to 0.7047), suggesting that the parental magma was produced by interactions between metasomatized lithospheric mantle and depleted asthenospheric melts at an early post-collision stage. The Fe-Ti oxide mineralization of the Niumaoquan intrusion benefited from interactions between depleted asthenospheric melts and lithospheric mantle, and fractional crystallization of abundant plagioclase and magnesian minerals.SHI Yu WANG Yuwang WANG Jingbin XIE Hongjing MAO Qigui ZHAO Lutong LONG Lingli LI Dedong ZHOU Guochao 2018Acta Geologica Sinica(English Edition)2018,92,5:3
12Sodium-rich volcanic rocks and their relationships with iron deposits in the Aqishan-Yamansu belt of Eastern Tianshan,NW China显示文摘The volcanic rocks hosting the iron deposits in the Aqishan–Yamansu metallogenic belt are sodium-rich.The geochronology,petrography,and geochemistry of minerals and sodium-rich rocks as well as the relationship between these rocks and the iron deposits are studied.Geochemically,the ore-hosting volcanic rocks are sodiumrich(the averages of Na2O and Na2O/K2O are 4.31 wt.%and 8.56,respectively)and belong to the calc-alkaline series.They are enriched in LREEs and LILEs(Ba,U,K,and Sr),but depleted in HFSEs(Nb,Ta,and Ti).SHRIMP zircon U–Pb dating of the crystal tuff in the Aqishan Formation and the dacite in the Tugutu Bulak Formation yields ages of 337.52.3 Ma(n?15,MSWD?0.85)and 313.03.3 Ma(n?13,MSWD?0.74),respectively,indicating that the sodium-rich volcanic rocks formed from the early–late Carboniferous.Electron microprobe data from plagioclases demonstrate that albites and/or oligoclases were formed in the basic–intermediate–acid volcanic rocks.Two stages of albitization are identified,and the latter is likely attributed to the dissolution of iron in the Aqishan–Yamansu belt.The sodium-rich volcanic rocks probably formed by the interaction between volcanic lava and seawater after volcanoes erupted on the seafloor;meanwhile,the albites formed by element substitution in a low-metamorphic environment.The spatiotemporal coupling relationship between sodium-rich volcanic rocks and iron deposits in the Aqishan–Yamansu belt is favorable.Iron dissolved from the dark minerals of basic–intermediate volcanic rocks through sodium metasomatism is one of the material sources for the iron deposits.Zhiyuan Sun WangJingbin Yuwang Wang Lingli Long Zhaohua Luo Xiaohua Deng Qitao Hu Menglong Wang 2020Geoscience Frontiers2020,11,2:2
13Zircon SIMS U-Pb Age of the Shaxinan Melagabbro, Eastern Tianshan and Constraints on Fe-Ti-V Oxide Mineralization显示文摘Objective The late Paleozoic Fe-Ti-V oxide deposit of the eastern Tianshan is an important orthomagmatic deposit type in the Central Asia Orogenic Belt(CAOB).A series of Fe-Ti-V oxide deposits and mineralized mafic-ultramafic intrusions have been recognized recently,such as those in Hongliangzi,Weiya,Yaxi,Shaxinan and Shaxi on the Central Tianshan massif,and Niumaoquan on theSHI Yu WANG Yuwang WANG Jingbin MAO Qigui XIE Hongjing ZHOU Guochao ZHU Jiangjian WEI Xiaofeng Lü Xiaoqiang 2018Acta Geologica Sinica(English Edition)2018,92,5:2
14Osteogenic effects of antihypertensive drug benidipine on mouse MC3T3-E1 cells in vitro显示文摘Hypertension is a prevalent systemic disease in the elderly,who can suffer from several pathological skeletal conditions simultaneously,including osteoporosis.Benidipine(BD),which is widely used to treat hypertension,has been proved to have a beneficial effect on bone metabolism.In order to confirm the osteogenic effects of BD,we investigated its osteogenic function using mouse MC3T3-E1 preosteoblast cells in vitro.The proliferative ability of MC3T3-E1 cells was significantly associated with the concentration of BD,as measured by methylthiazolyldiphenyl-tetrazolium bromide(MTT)assay and cell cycle assay.With BD treatment,the osteogenic differentiation and maturation of MC3T3-E1 cells were increased,as established by the alkaline phosphatase(ALP)activity test,matrix mineralized nodules formation,osteogenic genetic test,and protein expression analyses.Moreover,our data showed that the BMP2/Smad pathway could be the partial mechanism for the promotion of osteogenesis by BD,while BD might suppress the possible function of osteoclasts through the OPG/RANKL/RANK(receptor activator of nuclear factor-κB(NF-κB))pathway.The hypothesis that BD bears a considerable potential in further research on its dual therapeutic effect on hypertensive patients with poor skeletal conditions was proved within the limitations of the present study.Baixiang WANG Jiakang YANG Lijie FAN YuWANG Chenqiu ZHANG HuimingWANG 2021Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2021,22,5:2
15A new exhalite type—siderite-sericite chert formed in fault-controlled lacustrine basin显示文摘Jianming Liu Jie Ye Anli Zhang Yuwang Wang Neng Jiang 2001Science in China Series D: Earth Sciences2001,,12:1
16Design and experimental study of a passive power-source-free stiffness-self-adjustable mechanism显示文摘Passive variable stiffness joints have unique advantages over active variable stiffness joints and are currently eliciting increased attention.Existing passive variable stiffness joints rely mainly on sensors and special control algorithms,resulting in a bandwidth-limited response speed of the joint.We propose a new passive power-source-free stiffness-self-adjustable mechanism that can be used as the elbow joint of a robot arm.The new mechanism does not require special stiffness regulating motors or sensors and can realize large-range self-adaptive adjustment of stiffness in a purely mechanical manner.The variable stiffness mechanism can automatically adjust joint stiffness in accordance with the magnitude of the payload,and this adjustment is a successful imitation of the stiffness adjustment characteristics of the human elbow.The response speed is high because sensors and control algorithms are not needed.The variable stiffness principle is explained,and the design of the variable stiffness mechanism is analyzed.A prototype is fabricated,and the associated hardware is set up to validate the analytical stiffness model and design experimentally.Yuwang LIU Dongqi WANG Shangkui YANG Jinguo LIU Guangbo HAO 2021Frontiers of Mechanical Engineering2021,16,1:1
17In-situ LA-ICP-MS trace element and oxygen isotope signatures of magnetite from the Yamansu deposit,NW China,and their significance显示文摘The Yamansu iron deposit is hosted in submarine volcanic rocks in the Aqishan–Yamansu belt of Eastern Tianshan,NW China.A geological cross-section for the Carboniferous strata in the ore district shows that ore bodies in the Yamansu deposit are hosted in andesitic crystal tuff of the third cycle of the Carboniferous Yamansu Formation.This indicates an association between mineralization and volcanism.The orebodies are strata bound and lensoid and generally share the occurrence state of the host rocks.Magnetite mineralization mainly occurs asbreccia ores,ores in the mineralized volcanic rocks,massive ores,and sulfide-rich ores according to their structures and sequences of formation.Trace element compositions of magnetite from various types of ores were determined by LA-ICP-MS.The dataset indicates thatdifferent types of magnetite havedistinct trace element contents correlated to their formation environments.Magnetite crystals from breccia ores have high Ti,Ni,V,Cr,and Co and low Si,Al,Ca,and Mg contents,indicating crystallization from a volcanic magmatic eruption,which is consistent with field evidence of coexisting altered volcanic breccia.Magnetite crystals from ores in the mineralized volcanic rocks have moderate Ti,Ni,V,Cr,and Co contents.In contrast,magnetite from massive ores and sulfide-rich ores have low concentrations of Ti,Cr,Ni,and V,high concentrations of Si,Al,Ca,and Mg,and evidence of hydrothermal magnetite.In-situ magnetite compositions imply a magmatic-hydrothermal process.Although d18 O values for magnetite grains from Yamansu vary(?1.3 to?7.0%),they all plot in the range field of volcanic iron deposits,and they also record a magmatic-hydrothermal process.The compositions of Yamansu magnetites are interpreted as controlled mainly by temperature,fluid,host rock buffering,oxygen fugacity,and sulfur fugacity.The metallogenic conditions of the Yamansu deposit changed from high temperature and low oxygen fugacity to low temperature and high oxygen fugacity.However,more fluid-rock reactions and higher sulfur fugacity were involved during the deposition of massive ores and sulfiderich ores.Zhiyuan Sun Yuwang Wang Lingli Long 2020Acta Geochimica2020,39,5:1
18Problems of PGE metallogenesis related to mafic-ultramafic complexes in North Xinjiang,China显示文摘Platinum group element(PGE) mineralization is mostly related to mafic—ultramafic complexes of the dominant magmatic deposit type.Mineralization of this type mainly relies on two conditions:the abundance of PGE in magma,and the presence of mechanisms favorable to PGE enrichment and separation from sulfur-saturated magma during magmatic evolution.Mafic—ultramafic complexes are widely developed in North Xinjiang,including(1) the large-scale copper-nickel deposits of Kelatongke,Huangshan,Huangshan East,and Tulargen,(2) numerous small to medium-sized coppernickel deposits such as Xiangshan,Tudun.Hulu.Baishiquan.and(3) the Xiangshan West and Weiya medium-sized V—Ti magnetite deposits.However,mafic—ultramafic complexes in North Xinjiang rarely form PGE deposits.Therefore,questions about PGE metallogenesis in North Xinjiang are discussed in this paper from the standpoint of the ore-forming mechanism of PGE deposits and the characteristics of the North Xinjiang magma sources.The rock types of the post-collisional mafic—ultramafic complexes in North Xinjiang are of a ferrous rock series formed by fractional crystallization,a rock type generally favorable for hosting PGE.For the Cu-Ni sulfide deposits of North Xingjiang,the assimilation of crustal material causes sulfide liquation during processes of magmatic evolution and mineralization.This canYuwang Wang Jingbin Wang Lijuan Wang Lingli Long Zhen Liao Huiqiong Zhang Pingzhi Tang 2011Geoscience Frontiers2011,2,2:1
19Late Triassic Magma Mixing and Fractional Crystallization in the Qingchengzi Orefield,Eastern Liaoning Province:Regional Petrogenetic and Metallogenic Implications显示文摘The Qingchengzi orefield is an important Pb-Zn-Au-Ag polymetallic orefield in NE Chi-na.The Indosinian magmatism has formed the Shuangdinggou batholith and the Xinling stock,as well as dikes of quartz monzonite porphyry and lamprophyre.According to petrographic characteristics,the Shuangdinggou intrusion can be divided into the main suite and the central suite.Zircon U-Pb dat-ing yielded crystallization ages of 215.0-220.9 Ma for these various Qingchengzi magmatic units,which are within analytical error and represent coeval magmatism.The Shuangdinggou main suite contains abundant mafic microgranular enclaves(MMEs)and shows features of magma mixing.Geochemically,the major oxide contents of the MMEs and their quartz monzonite host show well-defined linear frac-tionation trends.The REE and trace element patterns of the MMEs and their host are similar,which demonstrates certain degree of geochemical homogenization between the two during magma mixing.The Shuangdinggou main suite shares similar geochemical characteristics with typical high Ba-Sr gra-nites(Ba=1082 ppm-2051 ppm,Sr=803 ppm-886 ppm),and was likely originated from the mixing between a melt derived from partial melting of the thickened lower crust and the enriched mantle.The central suite was likely formed by fractional crystallization of the main-suite magma.The Xinling in-trusion may represent a branch of the Shuangdinggou intrusion and has the same genesis as the central suite.The quartz monzonite porphyries geochemically mimic the Shuangdinggou main suite,and may also be an epioic facies of the Shuangdinggou intrusion.The MMEs and lamprophyres may have been derived from incomplete magma mixing.Formation of the Pb-Zn and Au-Ag deposits in the Qing-chengzi orefield may have been related to the granite/quartz monzonite porphyries near the Shuangdinggou intrusion,which were formed by magma mixing and fractional crystallization.Hongjing Xie Yuwang Wang Dedong Li Guochao Zhou Zhichao Zhang 2021Journal of Earth Science2021,32,1:1
20Solving open vehicle problem with time window by hybrid column generation algorithm显示文摘This paper addresses the open vehicle routing problem with time window(OVRPTW), where each vehicle does not need to return to the depot after completing the delivery task.The optimization objective is to minimize the total distance. This problem exists widely in real-life logistics distribution process.We propose a hybrid column generation algorithm(HCGA) for the OVRPTW, embedding both exact algorithm and metaheuristic. In HCGA, a label setting algorithm and an intelligent algorithm are designed to select columns from small and large subproblems, respectively. Moreover, a branch strategy is devised to generate the final feasible solution for the OVRPTW. The computational results show that the proposed algorithm has faster speed and can obtain the approximate optimal solution of the problem with 100 customers in a reasonable time.YU Naikang QIAN Bin HU Rong CHEN Yuwang WANG Ling 2022Journal of Systems Engineering and Electronics2022,33,4:0
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