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Multiple-Stage Mineralization in the Huayangchuan U-REE-Mo-Cu-Fe Ore Belt of the Qinling Orogen,Central China:Geological and Re-Os Geochronological Constraints

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Journal of Earth Science 2022年第1期33卷 193-204页

作者： Hongjun Jiang Chunsi Yang Dequan Wang Hui Zheng Jie Li huayong chen Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China CAS Center for Excellence in Deep Earth Science Guangzhou 510640China University of Chinese Academy of Sciences Beijing 100049China Guangdong Provincial Key Laboratory of Mineral Physics and Materials Guangzhou 510640China State Key Laboratory of Isotope Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China Geological Party No.214 Sino Shaanxi Nuclear Industry GroupXi'an 710100China Sino Shaanxi Nuclear Industry Group Xi'an 710100China

The Huayangchuan ore belt is located in the western segment of Xiaoqinling Orogen in the southern margin of the North China Craton(NCC),and hosts voluminous magmatism and significant U-REE-Mo-Cu-Fe polymetallic ***,geochronological framework of the various mineralization phases in this region is poorly ***,we present new Re-Os isochron ages on magnetite from the Caotan Fe deposit(2 675 ± 410 Ma,MSWD = 0.55),and on pyrite from the Jialu REE deposit(2 127 ± 280 Ma,MSWD = 1.9) and Yuejiawa Cu deposit(418 ± 23 Ma,MSWD =11.5),and Re-Os weighted average model age on pyrite from the Taoyuan Mo-U deposit(235 ± 14 Ma,MSWD = 0.17).These ages,combined with regional geology and mineralization ages from other deposits,suggest that mineralization in the Huayangchuan ore belt lasted from the Neoarchean to the Late *** mineralization corresponds to regional tectono-magmatic events,including the Neoarchean alkali magmatism(REE mineralization),Paleoproterozoic plagioclase-amphibolite emplacement(Fe mineralization),Paleoproterozoic pegmatite magmatism(U mineralization),Paleozoic Shangdan oceanic slab subduction-related arc magmatism(Cu mineralization),Early Mesozoic Paleo-Tethys Ocean subduction-related arc magmatism(Mo-U mineralization),and Late Mesozoic Paleo-Pacific oceanic plate subduction direction change-related Mo(-Pb) *** proposed that the Huayangchuan ore belt has undergone prolonged metallogenic evolution,and the magmatism and associated mineralization were controlled by regional geodynamic events.

关键词： Re-Os dating U-REE-Mo-Cu-Fe mineralization Huayangchuan ore belt extra-long metallogenic history Qinling Orogen geochemistry

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Deciphering fluid origins in the Paleozoic Laoshankou Fe-Cu-Au deposit, East Junggar: Constraints from noble gases and halogens

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Geoscience Frontiers 2021年第5期12卷 69-80页

作者： Pei Liang huayong chen Liandang Zhao Chao Wu Yuling Xie Chun-Kit Lai Civil and Resource Engineering School University of Science and Technology BeijingBeijing 100083China Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China Guangdong Provincial Key Laboratory of Mineral Physics and Materials Guangzhou 510640China School of Earth Science and Resource Chang'an UniversityXi'an 710064China Faculty of Science Universiti Brunei DarussalamGadong BE1410Brunei Darussalam

To constrain the ore-fluid source(s)of the Laoshankou Fe-Cu-Au deposit(Junggar orogen,NW China),we analyzed the fluid inclusion(FI)noble gas(Ar,Kr and Xe)and halogen(Cl,Br and I)compositions in the hydrothermal epidote and *** hypogene alteration/mineralization stages,including(I)pre-ore Ca-silicate,(II)early-ore amphibole-epidote-magnetite,(III)late-ore pyrite-chalcopyrite,and(IV)post-ore hydrothermal veining,have been identified at *** II FIs have salinity of 15.7 wt.%(NaCl eq.),I/Cl molar ratios of 75×10^(−6)-135×10^(−6),and Br/Cl molar ratios of 1.4×10^(−3)-2.1×10^(−3).The moderately-high seawatercorrected Br*/I ratios(0.5-1.5)and low 40ArE/Cl slope(-10−5)indicate the presence of sedimentary marine pore fluid,which was modified by seawater reacting with the Beitashan *** *** III fluid is more saline than their stage II and IV counterparts,reaching up to 23.3 wt.%(NaCl+CaCl2 eq.)close to halite saturation(-26 wt.%).The fluid has I/Cl ratios of 75×10^(−6)-90×10^(−6) and Br/Cl ratios of 1.5×10^(−3)-1.8×10^(−3).Considering the increasing 40ArE/Cl trend toward bittern brine and the higher 36Ar content than air-saturated water(ASW),a bittern fluid source is inferred from seawater evaporation,which was modified by interaction with organic-rich marine sedimentary *** IV FIs have lower temperature(110-228°C)and Br/Cl(0.90×10^(−3)-1.2×10^(−3)),but higher 36Ar content than ASW,indicative of dissolved evaporite or halite *** also the lowδDfluid(−114‰to−144‰)andδ18Ofluid(2.1‰-3.5‰)values,meteoric water(with minor dissolved evaporites)likely dominated the stage IV *** evaporites may have formed through continuous evaporation of the stage III surface-derived *** of non-magmatic fluids and different ore-fluid origins in stages II and III suggest that the ore-forming process was different from a typical magmatichydrothermal fluid-dominated skarn mineralization,which was previously proposed for Laosh

关键词： Halogen and noble gas Fluid inclusion Non-magmatic fluids Laoshankou Fe-Cu-Au deposit Central Asian Orogenic Belt(CAOB)

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深层地层电缆测试技术在砂砾岩油藏中的应用

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国外测井技术 2024年第4期45卷 46-50,2页

作者：王志强王先虎陈华勇时新芹中油测井新疆分公司测井研究所

准噶尔盆地西部隆起中拐凸起二叠系佳木河组断块发育,各断块间油、气相态差异较大,各断块油、气、水关系复杂,普遍具有“一块一藏”的特征,造成流体识别困难;储层以安山质、凝灰质砂砾岩为主,储层具有低孔低渗特征,横向上储层非均质性强... 详细信息

准噶尔盆地西部隆起中拐凸起二叠系佳木河组断块发育,各断块间油、气相态差异较大,各断块油、气、水关系复杂,普遍具有“一块一藏”的特征,造成流体识别困难;储层以安山质、凝灰质砂砾岩为主,储层具有低孔低渗特征,横向上储层非均质性强,储层的产能评价难度较大。为了快速落实中拐凸起**地区二叠系佳木河组储层流体性质以及纵向气、油、水分布规律,加快该区块的勘探评价开发的进程,新疆油田在**区块的***1井首次采用了新一代智能化地层测试平台的深层测试测井新技术,在二叠系佳木河组二段一砂组进行三段测试,确认了三层的流体性质,砂组中下部的测试为油层的第三层与试油结果完全吻合,在其之上的二层测试结果分别为油层和气层,说明三层测试结果直观、准确。因此,电缆测试新技术对于快速评价厚层规模储层段含油气性,深化**地区规模厚层砂砾岩油气藏认识、落实储量规模、节省试油费用等方面发挥了重要作用。

关键词：流体识别地层测试产能流体性质

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Coupled trace element and SIMS sulfur isotope geochemistry of sedimentary pyrite:Implications on pyrite growth of Caixiashan Pb-Zn deposit

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Geoscience Frontiers 2019年第6期10卷 2177-2188页

作者： Dengfeng Li huayong chen Xiaoming Sun Yu Fu Qiaofen Liu Xiaoping Xia Qing Yang School of Marine Sciences Sun Yat-sen UniversityGuangzhou510006China Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering Guangzhou510006China Key Laboratory of Mineralogy and Metallogeny Chinese Academy of SciencesGuangzhou510640China School of Earth Science and Engineering Sun Yat-sen UniversityGuangzhou510275China State Key Laboratory of Isotope Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou510604China

Colloform pyrite with core-rim texture is commonly deposited in carbonate platforms associated with the sulfide ores such as the Caixiashan Pb-Zn ***,the genesis of colloform pyrite in Pb-Zn deposits,its growth controls and their geological implication are insufficiently *** of in-situ trace element and SIMS sulfur isotopes has revealed geochemical variations among these pyrite *** colloform pyrite occur as residual phases of core-rim aggregates,the cores are made up of very fine-grained anhedral pyrite particles,with some rims being made up of fine-grained and poorlycrystallized pyrite,while the other rims were featured with euhedral cubic *** are cemented by fine-grained calcite and/or dolomite with minor *** isotope analysis shows that some wellpreserved rims have negative δ^34 S values(-28.12‰to-0.49‰),whereas most of the cores and rims have positive δ^34 S values(>0 to+44.28‰;peak at+14.91‰).Integrating with the methane and sulfate were observed in previous fluid inclusion study,we suggest that the 34 S depleted rims were initially formed by bacteria sulfate reduction(BSR),whereas the positive δ^34 S values were resulted from the sulfate reduction driven by anaerobic methane oxidation(AOM).The well-developed authigenic pyrite and calcite may also support the reaction of *** with petrographic observations,trace element composition of the colloform pyrite reveals the incorporation and precipitation behavior of those high abundance elements in the pyrite:Pb and Zn were present as mineral inclusion and likely precipitated before Fe,as supported by the time-resolved Pb-Zn signal spikes in most of the analyzed pyrite *** metals,such as Hg,Co and Ni,may have migrated as chloride complexes and entered the pyrite *** and Sb,generally influenced by complex-forming reactions rather than substitution ones,could also enter the pyrite lattice,or slightly predate the precipitation of coll

关键词： Pyrite trace elements SIMS sulfur isotopes Colloform pyrite Bacteria sulfate reduction(BSR) Anaerobic methane oxidation(AOM)

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Intra-continental back-arc basin inversion and Late Carboniferous magmatism in Eastern Tianshan,NW China:Constraints from the Shaquanzi magmatic suite

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Geoscience Frontiers 2017年第6期8卷 1447-1467页

作者： Hongjun Jiang Jinsheng Han huayong chen Yi Zheng Wanjian Lu Gang Deng Zhixiong Tan Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China Graduate University of Chinese Academy of Sciences Beijing 100049China Guangdong Provincial Key Laboratory of Mineral Physics and Materials Guangzhou 510640China Department of Earth Sciences Sun Yat-sen UniversityGuangzhou 510472China No.6 Geological Party Xinjiang Bureau of Geology and Mineral ExplorationHami 839000China

The Yamansu belt,an important tectonic component of Eastern Tianshan Mountains,of the Central Asian Orogenic Belt,NW China hosts many Fe-(Cu)*** this study,we present new zircon U-Pb geochronology and geochemical data of the volcanic rocks of Shaquanzi Formation and diorite intrusions in the Yamansu *** Shaquanzi Formation comprises mainly basalt,andesite/andesitic tuff,rhyolite and sub-volcanic diabase with local diorite *** volcanic rocks and diorites contain ca.315-305 Ma and ca.298 Ma zircons *** rocks show calc-alkaline affinity with enrichment in large-ion lithophile elements(LILEs),light rare-earth elements(LREEs),and depletion in high field strength elements(HFSEs)in primitive mantle normalized multi-element diagrams,which resemble typical back-arc basin *** show depleted mantle signature with ε_(Nd)(t)ranging from+3.1 to +5.6 for basalt;+2.1 to+4.7 for andesite;-0.2 to+1.5 for rhyolite and the ε_(Hf)(t)ranges from-0.1 to +13.0 for andesites;+5.8 to +10.7 for andesitic *** suggest that the Shaquanzi Formation basalt might have originated from a depleted,metasomatized lithospheric mantle source mixed with minor(3-5%)subduction-derived materials,whereas the andesite and rhyolite could be fractional crystallization products of the basaltic *** Shaquanzi Formation volcanic rocks could have formed in an intracontinental back-arc basin setting,probably via the southward subduction of the Kangguer Ocean beneath the Middle Tianshan *** Yamansu mineralization belt might have undergone a continental arc to back-arc basin transition during the Late Carboniferous and the intra-continental back-arc basin might have closed in the Early Permian,marked by the emplacement of dioritic magma in the Shaquanzi belt.

关键词： Shaquanzi igneous rocks Geochronology Geochemistry Intra-continental back-arc basin Yamansu belt Eastern Tianshan Mountains

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A preliminary study of the failure mechanisms of cascading landslide dams

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International Journal of Sediment Research 2015年第3期30卷 223-234页

作者： Gordon G.D Peng Cui Xinghua Zhu Jinbo Tang huayong chen Qicheng Sun Key Laboratory of Mountain Hazards and Earth Surface Process/Institute of Mountain Hazards and Environment Chinese Academy of Sciences(CAS) CAS Center for Excellence in Tibetan Plateau Earth Sciences State Key Laboratory for Hydroscience and Engineering Tsinghua University

Landslide dams commonly form when mass earth or rock movements reach a river channel and cause a complete or partial blockage of the *** rainfalls can induce upstream flows along a sloping channel that significantly affect downstream landslide *** a series of landslide dams are collapsed by incoming mountain torrents(induced by intense rainfall),large debris flows can form in a very short ***,the failure of these dams can amplify the magnitude and scale of debris flows in the flow *** catastrophic debris flows that occurred in Zhouqu County,China on 8 August 2010 were caused by intense rainfall and the upstream cascading failure of landslide dams along the *** the role of outburst floods associated with the complete or partial failure of landslide dams is an interesting problem usually beyond the scope of analysis because of the inherent modeling *** understand the cascading failure modes of a series of landslide dams,and the dynamic effect these failures have on the enlargement of debris flow scales,experimental tests are conducted in sloping channels mimicking field conditions,with the modeled landslide dams distributed along a sloping channel and crushed by different upstream *** failure modes of three different cascades of landslide dams fully or partially blocking a channel river are parametrically *** study illustrates that upstream flows can induce a cascading failure of the landslide dams along a *** is the primary failure mechanism,while piping and erosion can also induce failures for different constructed landslide dams.A cascading failure of landslide dams causes a gradually increasing flow velocity and discharge of the front flow,resulting in an increase in both diameter and percentage of the entrained coarse ***,large landslide blockages can act to enhance the efficiency of river incision,or conversely to induce aggradation of fluvial se

关键词： Cascading failure Landslide dam Upstream flow Failure mode Landscape evolution Debris flow

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Enhanced wear prediction of tunnel boring machine disc cutters for accurate remaining useful life estimation using a hybrid model

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Frontiers of Structural and Civil Engineering 2024年第4期18卷 642-662页

作者： Xinghai ZHOU Yakun ZHANG Guofang GONG huayong YANG Qiaosong chen Yuxi chen Zhixue SU The State Key Laboratory of Fluid Power&Mechatronic Systems Zhejiang UniversityHangzhou 310027China Guangzhou Rail Transit Construction Engineering Consulting Co. Ltd.Guangzhou 510000China China Railway Engineering Equipment Group Co. Ltd.Zhengzhou 450016China

In tunnel construction with tunnel boring machines(TBMs),accurate prediction of the remaining useful life(RUL)of disc cutters is critical for timely maintenance and replacement to avoid delays and cost *** paper introduces a novel hybrid model,integrating fundamental and data-driven approaches,to enhance wear prediction of TBM disc cutters and enable accurate RUL *** fundamental model is improved by incorporating composite wear mechanisms and load estimation techniques,showcasing superior prediction accuracy compared to single-mechanism ***,the hybrid model innovatively incorporates a data-driven supplementary residual term into the improved fundamental model,leading to a high-performance wear prediction *** actual field data from a highway tunnel project in Shenzhen,the performance of the hybrid model is rigorously tested and compared with pure fundamental and data-driven *** hybrid model outperforms the other models,achieving the highest accuracy in predicting TBM disc cutter wear(mean absolute error(MAE)=0.53,root mean square error(RMSE)=0.64).Furthermore,this study thoroughly analyzes the hybrid model’s generalization capability,revealing significant impacts of geological conditions on prediction *** model’s generalization capability is also improved by expanding and updating the data *** RUL estimation results provided by the hybrid model are straightforward and effective,making it a valuable tool by which construction staff can monitor TBM disc cutters.

关键词： tunnel boring machine disc cutter wear prediction remaining useful life field data hybrid model

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贵州省山地农机应用现状及发展对策

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南方农业 2024年第14期18卷 84-87页

作者：李官平吴桂芝唐勇陈华勇冯先军贵州省山地农业机械研究所贵州贵阳550003 贵阳市乡村振兴服务中心农机推广服务站贵州贵阳550081

贵州省农业机械化自“十三五”以来发展迅速,省内农机研发和应用推广水平逐年提高,为现代农业生产体系的构建奠定了良好基础。然而,受自然条件、人力资源等因素的影响和制约,贵州省山地农机发展还存在对农业机械化的认识程度不足、农机... 详细信息

贵州省农业机械化自“十三五”以来发展迅速,省内农机研发和应用推广水平逐年提高,为现代农业生产体系的构建奠定了良好基础。然而,受自然条件、人力资源等因素的影响和制约,贵州省山地农机发展还存在对农业机械化的认识程度不足、农机作业基础设施建设滞后、农艺和农机深度融合程度不够、农机研发生产能力较弱等问题,致使贵州省农业机械化水平长期低于全国平均水平。为解决这些问题,贵州省应从当地实际出发,加强山地农机化宣传、加大农机作业基础设施建设力度、促进农机农艺深度融合、建立良好的农机科技创新环境等。

关键词：山地农机应用现状发展对策贵州省

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Progress and records in the study of endogenetic mineralization during collisional orogenesis

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Chinese Science Bulletin 2000年第1期45卷 1-10页

作者： Yanjing chen huayong chen Yulin Liu Guangjun Guo Yong Lai Shan Qin Baoling Huang Zengjie Zheng Yinghui Sui Chao Li et al. Peking Univ Dept Geol Beijing 100871 Peoples R China

To develop and perfect the theory of plate tectonics and regional metallogeny, metal-logenesis during collisional orogenesis should be thoroughly studied and will attract increasing at-tention of more and more scientists. This paper presents the main aspects of research and discus-sions on metallogenesis during collisional orogenesis after the development of plate tectonics, and accordingly divides the study history into two stages, i.e. the junior stage during 1971-1990 and the senior stage after 1990. Beginning with the negation of mineralization in the collision regime by Guild (1971), the focus of study was put on whether there occurred any mineralization during collisional orogenesis at the junior stage. At the senior stage, which is initiated by the advance of met-allogenic and petrogenic model for collisional orogenesis, scientists begin to pay their attention to the geodynamic mechanism of metallogenesis, spatial and temporal distribution of ore deposits, ore-forming fluidization, relationship

关键词： collisional orogenesis metallogenesis study history progress frontier.

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超大井眼疏松地层声波时差采集与提取方法

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测井技术 2024年第2期48卷 256-264页

作者：蔺敬旗周炬锋曹志锋张浩罗兴平陈华勇中国石油集团测井有限公司新疆分公司新疆克拉玛依834000 中国石油新疆油田公司勘探事业部新疆克拉玛依834000 中国石油新疆油田公司勘探开发研究院新疆克拉玛依834000

在准噶尔盆地南缘山前超深层油气勘探中,由于声波能量受表层超大井眼、疏松地层衰减的影响,无法有效获取纵波时差。为解决此难题,对相关声波时差测井采集与提取方法进行了研究。针对超大井眼声波测井采集,提出了一种声波偏心仪器的测井... 详细信息

在准噶尔盆地南缘山前超深层油气勘探中,由于声波能量受表层超大井眼、疏松地层衰减的影响,无法有效获取纵波时差。为解决此难题,对相关声波时差测井采集与提取方法进行了研究。针对超大井眼声波测井采集,提出了一种声波偏心仪器的测井方法,并选取偶极子阵列声波测井作为疏松地层声波测井系列。基于慢度-时间相关法提取声波时差的原理,利用频率开窗技术,锁定了区域偶极子声源激发的漏能纵波的频率为2.6~3.6 kHz;通过对横波信号与直达波信号进行频率过滤,确定了波形窗口、时差搜寻窗长和时差搜索偏移量处理参数,使得纵波信号最强,并将漏能纵波从偶极横波原始波形中分离出来,从而提取疏松地层的声波时差。应用该方法成功采集了准噶尔盆地南缘山前表层超大井眼、疏松地层12口井的偶极子声波资料,并提取了纵波时差。将提取的纵波时差应用于井震成像,显著提高了地震处理资料品质,为认识山前超深层构造和井位部署提供了重要依据。

关键词：超大井眼疏松地层偶极子声波慢度-时间相关法井震成像准噶尔盆地南缘

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