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Structural Control of the Getang Carlin-Type Gold Deposit in Southwest China

Journal of Earth Science 2024年第2期35卷 536-552页

作者： Guoping Zeng Xinlu Hu Diwei Luo Jianzhong Liu shuzhen yao Yongjie Jin Wuhan Center China Geological SurveyWuhan430205China Central South China Innovation Center for Geosciences Wuhan430205China Faculty of Earth Resources China University of GeosciencesWuhan430074China Geological Party 105 Guizhou Bureau of Geology and Mineral Exploration&DevelopmentGuiyang550018China

The Getang is a representative Carlin-type gold deposit in Southwest *** has a proven reserve of about 30 tonnes at an average grade of 5.1 g/t *** orebodies occur as strat-abound lenses,and are structurally controlled by shallow NWW-and NE-trending fold-fault systems and the unconformity between the Upper and Middle *** this study,the regional-and deposit-scale structural investigations,joints and finite strain measurements,and stress and dynamic analysis were conducted with an aim to reveal the structural process of the Getang gold deposit and clarify the relationship between the gold mineralization and *** phases of deformation were identified in the deposit:(1)paleokarst was generated by a crustal uplift when the Youjiang Basin experienced extension at the end of the Middle Permian,laying the foundation for the unconformity;(2)the NW-trending structures were formed under a NNE-SSW compression during the Indochina-South China collision(Indosinian orogeny)in Triassic;(3)the NE-trending structures were generated or reactivated under a NW-SE-oriented compression during the Yanshanian intracontinental *** unconformity recorded two episodes of tectonic evolution in the NNE-SSW and NW-SE *** analyses and geochronology data suggest that the Getang gold deposit was formed as a result of tectonic transition from compression to extension during the Yanshanian intracontinental orogeny.

关键词： Carlin-type gold deposit structural features finite strain Getang Southwest China economy geology geochemistry

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Revenue-maximizing online stable task assignment on taxi-dispatching platforms

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Frontiers of Computer Science 2022年第6期16卷 175-177页

作者： Jingwei LV Ze ZHAO shuzhen yao Weifeng LV School of Computer Science and Engineering Beihang UniversityBeijing100191China School of Mathematical Science Beihang UniversityBeijing100191China

1 Introduction and contributions With the rapid development of mobile Internet,taxi-dispatching platforms have become increasingly popular and *** example,UBer and Didi are both famous O2O platforms covering the dominating portion of the taxidispatching market over the world.A central issue in taxidispatching platforms is task assignment.

关键词： O2O assignment platforms

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A Software Safety Requirements Elicitation Approach Based on Hazardous Control Action Tree Modelling

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Chinese Journal of Electronics 2021年第4期30卷 676-685页

作者： ZHU Danjiang yao shuzhen TAN Huobin The 32nd Research Institute of China Electronics Technology Group Corporation School of Computer Science and Engineering Beihang University

Software safety requirements are crucial for safety assurance of safety-critical software systems. A novel accident causality model, Systems-theoretic accident modeling and processes(STAMP), has been proposed to overcome the limitations of traditional safety techniques in software safety requirements ***,the STAMP-based method is ad-hoc with no rigorous procedure to elicit software safety requirements ***, the time-related safety requirements, which are important to software safety, have been paid little attention in STAMP-based method. With the purpose of overcoming these limitations, this paper strives to find a systematic approach to elicit software safety requirements with STAMP, especially the time-related safety requirements. Firstly, a new process model of STAMP is proposed to model all the system varilables and the ralationship of them in control processes. Then based on the process model, an approach HCAT-SSRA is proposed to elicit the software safety requirements by building Hazardous control action tree(HCAT) for each control action in system control processes. Additionally,several rules are proposed to guide time-related software safety requirements analysis. Finally, a case study is given to illustrate the availability and feasibility of the proposed method.

关键词： Software safety Software safety requirements analysis(SSRA) Requirements elicitation

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Geochemistry, U-Pb Geochronology and Sr-Nd-Hf Isotopes of the Early Cretaceous Volcanic Rocks in the Northern Da Hinggan Mountains

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Acta Geologica Sinica(English Edition) 2015年第1期89卷 203-216页

作者： HU Xinlu yao shuzhen HE Mouchun DING Zhenju CHEN Bin Faculty of Earth Resources China University of Geosciences Key Laboratory of Tectonics and Petroleum Resources Ministry of Education State Key Laboratory of Geological Process and Mineral Resources China University of Geosciences

Whole-rock geochemical, zircon U-Pb geochronological and Sr-Nd-Hf isotopic data are presented for the Early Cretaceous volcanic rocks from the northern Da Hinggan Mountains. The volcanic rocks generally display high SiO2 （73.19-77.68 wt%） and Na20＋K20 （6.53-8.98 wt%） contents, with enrichment in Rb, Th, U, Pb and LREE, and depletion in Nb, Ta, P and Ti. Three rhyolite samples, one rhyolite porphyry sample, and one volcanic breccia sample yield weighted mean 206pb/23SU ages of 135.1±1.2 Ma, 116.5±1.1 Ma, 121.9±1.0 Ma, 118.1±0.9 Ma and 116.9±1.4 Ma, respectively. All these rocks have moderate （STSr/S6Sr）i values of 0.704912 to 0.705896, slightly negative eNd（t） values of -1.4 to -0.1, and positive Cur（t） values of 3.7 to 8. Their zircon Hf and whole-rock Nd isotopic model ages range from 594 to 1024 Ma. These results suggest that the Early Cretaceous volcanic rocks were originated from melting of subducted oceanic crust and associated sediments during the closure of the Mongol-Okhotsk Ocean.

关键词： U-Pb geochronology Sr-Nd-Hf isotopes volcanic rocks Early Cretaceous Da HingganMountains

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基于残差SDE-Net的深度神经网络不确定性估计

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北京航空航天大学学报 2023年第8期49卷 1991-2000页

作者：王永光姚淑珍谭火彬北京航空航天大学计算机学院北京100191 北京航天计量测试技术研究所国家市场监管重点实验室(人工智能计量测试与标准)北京100076 北京航空航天大学软件学院北京100191

神经随机微分方程模型(SDE-Net)可以从动力学系统的角度来量化深度神经网络(DNNs)的认知不确定性。但SDE-Net面临2个问题,一是在处理大规模数据集时,随着网络层次的增加会导致性能退化;二是SDE-Net在处理具有噪声或高丢失率的分布内数... 详细信息

神经随机微分方程模型(SDE-Net)可以从动力学系统的角度来量化深度神经网络(DNNs)的认知不确定性。但SDE-Net面临2个问题,一是在处理大规模数据集时,随着网络层次的增加会导致性能退化;二是SDE-Net在处理具有噪声或高丢失率的分布内数据所引起的偶然不确定性问题时性能较差。为此设计了一种残差SDE-Net(ResSDE-Net),该模型采用了改进的残差网络(ResNets)中的残差块,并应用于SDE-Net以获得一致稳定性和更高的性能;针对具有噪声或高丢失率的分布内数据,引入具有平移等变性的卷积条件神经过程(ConvCNPs)进行数据修复,从而提高ResSDE-Net处理此类数据的性能。实验结果表明:ResSDE-Net在处理分布内和分布外的数据时获得了一致稳定的性能,并在丢失了70%像素的MNIST、CIFAR10及实拍的SVHN数据集上,仍然分别获得89.89%、65.22%和93.02%的平均准确率。

关键词：神经随机微分方程卷积条件神经过程不确定性估计残差块深度神经网络

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On Magma-Genetic Characteristics of Skarn and Its Formation Mechanism

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Journal of Earth Science 1993年第1期12卷 74-79,139页

作者： Lin Xinduo Zhang shuzhen Xu GuqjianChina University of Geosciences , Wuhan 430074 Zhang Chuanling , yao shuzhen and Zhang Dehui also participated in this study .

For skarn type deposits , there are two lands of skarns , skarn formed by filtrating-diffusing metasomatism and vein skarn formed by filling . The vein skarn , discussed this paper and considered to be magmatic genesis , is characterized by: (1) occurring as vein with distinct boundaries with country rocks , yet just the same even in marble easy to be replaced ; (2) composed of a mineral assemblage similar to that of granite ,containing pegmatite as wen as coarse skarn mineral pockets ,and sometimes transited with dike rocks ; (3) dear crystalline feature of deposition ; (4) sideronitic texture ; (5) stowing vesicular, bean-like and flow structures ; (6) very common liquid immiscibility; (7) vertical zoning of gravitational differentiation caused by volatile concentration upwards; (8) associated and transited with non-copper ore bodies of magmatic genesis and tungsten-bearing quartz veins of silicate magmatic genesis rich in volatile ; (9) melt inclusions . Two origins of skam magma . originated by assimilation of silicate magma at its emplacemeot or below it and generated owe to assimilation of deep magma ,corrosion of carbonate strata and liquation , are presented .

关键词： skam skam magma ore magma .liquid immiscibility.

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Structural control of the Getang Carlin-type gold deposit in Southwest China

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Journal of Earth Science 2021年

作者： Guoping Zeng Xinlu Hu Diwei Luo Jianzhong Liu shuzhen yao Yongjie Jin Wuhan Center， China Geological Survey Central South China Innovation Center for Geosciences Faculty of Earth Resources， China University of Geosciences Geological Party 105， Guizhou Bureau of Geology and Mineral Exploration & Development

The Getang is a representative Carlin-type gold deposit in Southwest China. It has a proven reserve of about 30 tonnes at an average grade of 5.1 g/t Au. The orebodies occur as stratabound lenses， and are structurally controlled by shallow NWW- and NE-trending fold-fault systems and the unconformity between the Upper and Middle Permian. In this study， the regional- and deposit-scale structural investigations， joints and finite strain measurements， and stress and dynamic analysis were conducted with an aim to reveal the structural process of the Getang gold deposit and clarify the relationship between the gold mineralization and structures. Three phases of deformation were identified in the deposit: (1) paleokarst was generated by a crustal uplift when the Youjiang Basin experienced extension at the end of the Middle Permian， laying the foundation for the unconformity; (2) the NW-trending structures were formed under a NNE–SSW compression during the Indochina-South China collision (Indosinian orogeny) in Triassic; (3) the NE-trending structures were generated or reactivated under a NW–SE-oriented compression during the Yanshanian intracontinental orogeny. The unconformity has recorded two episodes of tectonic evolution in the NNE–SSW and NW–SE directions. Structural analyses and geochronology data suggest that the Getang gold deposit was formed as a result of tectonic switch from compression to extension during the Yanshanian intracontinental orogeny.

关键词： Carlin-type gold deposit Structural features Finite strain Getang Southwest China

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基于Petri网的UML状态图的形式化模型

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北京航空航天大学学报 2007年第2期33卷 248-252页

作者：郭峰姚淑珍北京航空航天大学计算机学院北京100083

提出一种可以准确描述UML状态图动态特征的形式化模型SC_Net.首先给出了UML状态图的形式化语法定义,其中用状态集合、转移集合、事件集合、条件集合、活动集合、对象集合和变量集合,定义了一系列辅助函数描述UML状态图特征,用确定目标... 详细信息

提出一种可以准确描述UML状态图动态特征的形式化模型SC_Net.首先给出了UML状态图的形式化语法定义,其中用状态集合、转移集合、事件集合、条件集合、活动集合、对象集合和变量集合,定义了一系列辅助函数描述UML状态图特征,用确定目标状态和受限源状态表示层次关系,用开放事件和封闭事件表示对象之间的消息.基于C_Net定义了描述UML状态图动态语义的Petri网模型SC_Net,既能描述状态图中的控制部分,又能描述状态图中的数据处理部分,并给出了从UML状态图到SC_Net的转换步骤,便于实现自动转换过程.最后以柔性制造系统的一个实例说明SC_Net能用于分析UML状态图的性质.

关键词： UML状态图 Petri网形式化语义

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黑龙江翠宏山铁钼多金属矿田两期钼成矿事件厘定

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地球科学 2022年第1期47卷 309-324页

作者：曾国平胡新露姚书振董子良周铭杨健中国地质调查局武汉地质调查中心湖北武汉430205 中南地质科技创新中心湖北武汉430205 中国地质大学资源学院湖北武汉430074 中国地质科学院北京100037

黑龙江省翠宏山铁钼多金属矿田属于小兴安岭-张广才岭铁多金属成矿带,发育铁、铅、锌、钼、钨等多金属大规模成矿作用.尤以钼矿化最具特色,出现矽卡岩-斑岩型钼钨矿化、斑岩型钼矿化和隐爆角砾岩型钼矿化等多种类型的钼矿化在单一矿田... 详细信息

黑龙江省翠宏山铁钼多金属矿田属于小兴安岭-张广才岭铁多金属成矿带,发育铁、铅、锌、钼、钨等多金属大规模成矿作用.尤以钼矿化最具特色,出现矽卡岩-斑岩型钼钨矿化、斑岩型钼矿化和隐爆角砾岩型钼矿化等多种类型的钼矿化在单一矿田中并存的现象.但三种钼矿化类型的矿化特征和时空关系等缺乏系统梳理,钼成矿事件尚未清晰厘定.选取该矿田内翠宏山、霍吉河和宏铁山等含钼矿床,开展矿床地质特征解析,结合辉钼矿Re-Os定年,初步厘定翠宏山矿田存在晚三叠世矽卡岩-斑岩型和隐爆角砾岩型钼矿化以及早侏罗世斑岩型钼矿化两期钼成矿事件.辉钼矿Re含量和成矿岩浆岩石学研究揭示翠宏山矿田中钼为幔源新生物质与古老地壳混源,相较于晚三叠世成矿期,早侏罗世成矿期加入了更多幔源新生物质.综合矿化特征和成矿物质来源分析认为区内钼成矿与松嫩地块与佳木斯地块在晚三叠世-早侏罗世期间的碰撞拼合过程有关.

关键词：翠宏山矿田铁钼多金属钼成矿事件 Re-Os定年黑龙江省矿床学

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Thermodynamic Modeling of Fluid-Bearing Natural Gas Inclusions for Geothermometer and Geobarometer of Overpressured Environments in Qiongdongnan Basin, South China Sea

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Journal of China University of Geosciences 2002年第3期13卷 240-247页

作者： Chen Honghan yao shuzhen Wang Jiahao Li Chunquan Institute of Resources, China University of Geosciences, Wuhan 430074 Institute of Resources China University of Geosciences Wuhan 430074

It is a very difficult problem to directly determine fluid pressure duringhydrocarbon migration and accumulation in sedimentary basins. pVt modeling of coupling hydrocarbonfluid inclusion of its coeval aqueous fluid inclusion provides a powerful tool for establishing therelationship of formation pressure evolution with time. Homogenization temperature of fluidinclusion can routinely be measured under microthermometric microscopy. Crushing technique has beenemployed to obtain the composition of fluid inclusions, and the commercial software VTFLINC easilyand rapidly completes the construction of p-t phase diagram. The minimum trapping pressure ofhydrocarbon fluid inclusion would be then determined in the p-t space. In this paper, three samplesof YC21-1-1 and YC21-1-4 wells at YC21-1 structural closure, Qiongdongnan basin, South China Sea,were selected for the pVt modeling practice, and the formation pressure coefficient (equals to fluidpressure/hydrostatic pressure) changing trend with time has primarily been established. Themodeling results also indicate that the reservoirs of Ling-shui and Yacheng formations in YC21-1structure are within a very high potential system and would have undergone a discharging of thermalfluids through top seal rupture, which depicts that there is a very high risk for natural gasexploration in this area.

关键词： hydrocarbon fluid inclusion pVt modeling natural gas migration andaccumulation qiongdongnan basin south china sea

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