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Metallogenic Districts of Yangtze Cratonic Rim at the Edge of Chaos

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Journal of earth Science 1999年第1期18卷 5-11页

作者： yu chongwen faculty of earth sciences, china university of geosciences, Wuhan 4.0074

Combining the science of complexity with ore geology, the author puts forward a new theory of metallogenesis: “complexity and self organized criticality of metallogenic dynamic systems”, and three fundamental theories are raised for it. The ore genesis and regularity of ore formation of four metallogenic districts around the Yangtze craton in china are studied with this theory. It is found that “metallogenic districts of Yangtze cratonic rim are all at the edge of chaos”. This proposition is expounded by four determinative criteria of the edge of chaos for metallogenic districts of Yangtze cratonic rim.

关键词： self organized criticality (SOC) edge of chaos power law fractal structure soliton supercritical geofluid spatio temporal chaos.

Mass and Energy Transportation in Ore-Forming Processes of Sulfide Deposits in Tongling District

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Journal of earth Science 1999年第4期18卷 299-304页

作者： Cen Kuang yu chongwen(faculty of earth {4., china university of geosciences, Wuhan 4.0074) faculty of earth sciences China University of GeosciencesWuhan 430074

Based on dynamics of heat conduction, fluid flow caused by heating and chemical material transport induced by fluid flow, temperature and stream fields of fluid flow in ore-forming processes of Cu-Au sulfide in the Tongling district deposits was modeled and analyzed. It is shown that: (1) Mass and energy flow caused by fluid flow is key problem of kythrothermal ore-forming processes; the heating from magma intruded is basic power for driving fluid flow. (2) occurrence of pluton, different chemical property and porosity of wall rocks and infiltration restrict the specifically field of precipitation for ore-forming ***, the dissolution and precipitation field for ore-forming material in deposit can be forecasted. (3) Iron and sulfur material comes mostly from sandstone formation of Wutong Group, which contains pyrite and high porosity. The cataclastic dolomite interlayered in sandstone and limestone is a favorable place for ore accumulating. The difference of chemical property between sandstone and dolomite forms a favorable interface for ore-forming processes.

关键词： heat conduction mass transportation fluid path-line streamline

Dissolution Precipitation Wave Structure of Hydrothermal Ore Zoning

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Journal of earth Science 1995年第1期14卷 85-96页

作者： yu chongwen(faculty of earth {4., china university of geosciences,Wuhan 4.0074)Jiang Yaosong Xiao Zhengyu(Department of Computer Science,china university of geosciences, Beijing 100083)

Hydrothermal ore zoning is a transport-reaction problem in which infiltration is the principal Prcness of transport and dissolution/Precipitation is the Principal process of chemical *** diffusion and ion exchange/adsorption would not affect the basic attributes of hydrothermal ore zoning. Hydrothermal ore zoning belongs essentially to infiltration metasomatic zoning, it results from the formation and propagation of dissolution/precipitation waves through Permeable media. The authors apply the theory of coupled infiltration and dissolution/precipitation reactions in Physicochemical hydrodynamics to studying the structural characteristics of dissolution/precipitation waves, and apply furthermore the coherence principle in dynamic theory of multicomponent coupled systems to revealing the dynamic mechanisms of their formation. The results of investigation verify and develop . C. 's theory of infiltration metasomatic zoning,on the one hand, raising it from the qualitative, equilibrium thermodynamic basis to the quantitative dynamic level;on the other hand, and more importantly, applying theories of Physicochemical hydrodynamics and dynamics of multicomponent coupled systems to bringing to light the dynamic mechanisms of formation of the structure of hydrothermal ore zoning, and advancing a theory of hydrothermal ore zoning, putting forward new ideas on the nature of the problem of hydrothermal ore zoning, the essence of hydrothermal ore zoning and the structural characteristics and mechanisms of formation of hydrothermal ore zoning.

关键词： hydrothermal ore zoning,transport-reaction,infiltration metasomatism dissolution/ Precipitation waves,Physicochemical hydrodynamics,theory of coupled infiltration and dissolution/precipitation reactions dynamic theory of multicomponent coupled systems,c

Capturing and visualizing the phase transition mediated thermal stress of thermal barrier coating materials via a cross-scale integrated computational approach

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Journal of Advanced Ceramics 2024年第4期13卷 413-428页

作者： Mengdi Gan Tianlong Lu Wei yu Jing Feng Xiaoyu Chong faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China

The generation and evaluation of severely high thermal stress(σ)is known to be responsible for failure of thermal barrier coatings(TBCs)during thermal *** is crucial and challenging to capture fluctuations inσcaused by the phase transition,which has motivated us to develop a high-throughput multiscale evaluation method forσin TBCs that considers the phase transition of the top ceramic materials by coupling first-principles calculations with finite element *** method quantitatively evaluates and visualizesσof the real TBC structure under thermal cycling by multifield ***,the thermophysical properties calculated by the first-principles calculations consider the effects of temperature and phase transition,which not only reduces the cost of obtaining data but also has a more physical *** this work,rare earth tantalites(RETaO_(4.)are introduced as ceramic layers,and the results demonstrate thatσundergoes a rapid escalation near the phase transition temperature(T_(t)),particularly in the TBCs_GdTaO_(4. system,where it rises from 224.to 4.5 *** discontinuity inσmay originate from the significant alterations in Young’s modulus(increase by 27%–78%)and thermal conductivity(increase by 53%–14.%)near T_(t).The TBCs_NdTaO_(4. and TBCs_SmTaO_(4. systems exhibit noteworthy temperature drop gradients and minimalσfluctuations,which are beneficial for extending service lifetime of *** approach facilitates the prediction of failure mechanisms and provides theoretical guidance for the reverse design of TBC materials to obtain low thermal stress systems.

关键词： thermal conductivity first-principles calculations thermodynamics thermal stress thermophysical properties

Nutrient enrichment driven by canopy rainfall redistribution:Mechanism,quantification,and pattern

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Science china earth sciences 2024年第5期67卷 1529-1544页

作者： Chuan yuAN Xiaoping yuE Yafeng ZHANG yu ZHANG Yanting HU Qiang TANG Li GUO Shuai WANG Xingwu DUAN Wenhua XIANG Xiaohua WEI Xiaoyan LI College of Forestry and Biotechnology Zhejiang A&F UniversityHangzhou 311300China Chongqing Jinfo Mountain Karst Ecosystem National Observation and Research Station School of Geographical SciencesSouthwest UniversityChongqing 400715China Shapotou Desert Research and Experiment Station Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China School of Geographical sciences Hebei Normal UniversityShijiazhuang 050024China faculty of Life Science and Technology Central South University of Forestry and TechnologyChangsha 410004China State Key Laboratory of Hydraulics and Mountain River Engineering College of Water Resource and HydropowerSichuan UniversityChengdu 610065China State Key Laboratory of earth Surface Processes and Resource Ecology Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China yunnan Key Laboratory of Soil Erosion Prevention and Green Development Institute of International Rivers and Eco-securityYunnan UniversityKunming 650091China Department of earth Environmental and Geographic SciencesUniversity of British Columbia(Okanagan)KelownaBritish Columbia V1V 1V7Canada

Vegetation canopies intercept and redistribute rainfall into throughfall and stemflow,which transfer substantial amounts of elements into the soil,influencing soil microbial community,plant survival,and plant community *** advancements in ecohydrological research,the implication of nutrient enrichment resulting from this redistribution of rainfall by canopies remains largely *** address this gap,we conducted a systematic review of 1020 papers published between 2000 and 2022,gathering data on nutrient concentration and enrichment for critical ions(including K^(+),Na^(+),Ca^(2+),Mg^(2+),NH_(4.^(+),Cl^(-),NO_(3)^(-)and SO_(4.^(2-))from the Web of Science and Chinese Knowledge Infrastructure *** aimed to synthesize the mechanisms,quantify the enrichments,and identify global patterns of nutrient enrichment in stemflow and throughfall across climate zones,and vegetation types and *** results of this study indicate that stemflow exhibits,on average,2.1times greater ion concentration(6.13 mg L^(-1))compared to *** particular,among the investigated ions,SO_(4.^(2-)(12.4.and 6.32 mg L^(-1))for stemflow and throughfall,respectively,and Cl^(-)(9.21 and 4.81 mg L^(-1))exhibit the highest concentrations in both rainfall redistribution components,while K^(+)(13.7 and 5.8)and Mg^(2+)(5.6 and 2.8)have the highest enrichment *** climate zones,throughfall and stemflow show the lowest ion concentrations but the highest enrichment factors in extremely humid *** the temperature gradient,ion concentrations are the highest in cold climates with no clear patterns observed for enrichment factors with increasing *** addition,shrubs,conifers,mixed forests,and artificial ecosystems demonstrate enrichment factors 1.1 to 3.0 times greater than those of trees,broad-leaved plants,pure forests,and natural *** findings emphasize the need for increased attentions to artificial ecosystems,such as urban

关键词： Ecohydrology Rainfall redistribution Nutrients transport Enrichment characteristics Climate zones

Unravelling biosynthesis and biodegradation potentials of microbial dark matters in hypersaline lakes

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Environmental Science and Ecotechnology 2024年第4期20卷 177-188页

作者： Zhiguang Qiu yuanyuan Zhu Qing Zhang Xuejiao Qiao Rong Mu Zheng Xu Yan Yan Fan Wang Tong Zhang Wei-Qin Zhuang Ke yu School of Environment and Energy Peking University Shenzhen Graduate SchoolShenzhen518055China AI for Science(AI4.)-Preferred Program Peking UniversityShenzhen518055China Southern university of sciences and Technology Yantian Hospital Shenzhen518081China Institute of Biomedicine and Biotechnology Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China State Key Laboratory of Isotope Geochemistry CAS Center for Excellence in Deep Earth ScienceGuangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou510640China School of Atmospheric sciences Sun Yat-sen UniversitySouthern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai519082China Department of Civil Engineering University of Hong Kong999077Hong KongChina Department of Civil and Environmental Engineering Faculty of EngineeringUniversity of AucklandNew Zealand

Biosynthesis and biodegradation of microorganisms critically underpin the development of biotechnology,new drugs and therapies,and environmental ***,most uncultured microbial species along with their metabolic capacities in extreme environments,remain *** we unravel the metabolic potential of microbial dark matters(MDMs)in four deep-inland hypersaline lakes in Xinjiang,*** metagenomic binning,we uncovered a rich diversity of 3030 metagenomeassembled genomes(MAGs)across 82 phyla,revealing a substantial portion,2363 MAGs,as previously unclassified at the genus *** unknown MAGs displayed unique distribution patterns across different lakes,indicating a strong correlation with varied physicochemical *** analysis revealed an extensive array of 9635 biosynthesis gene clusters(BGCs),with a remarkable 94.3 being novel,suggesting untapped biotechnological ***,some MAGs from potentially new phyla exhibited a high density of these *** biosynthesis,our study also identified novel biodegradation pathways,including dehalogenation,anaerobic ammonium oxidation(Anammox),and degradation of polycyclic aromatic hydrocarbons(PAHs)and plastics,in previously unknown microbial *** findings significantly enrich our understanding of biosynthesis and biodegradation processes and open new avenues for biotechnological innovation,emphasizing the untapped potential of microbial diversity in hypersaline environments.

关键词： Biosynthesis Biodegradation Hypersaline lakes Metagenome-assembled genomes Microbial dark matters

Arsenic and fluoride co-enrichment of groundwater in the loess areas and associated human health risks:A case study of Dali County in the Guanzhong Basin

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china Geology 2024年第3期7卷 445-459页

作者： Rui-ping Liu Fei Liu Hua-qing Chen yu-ting Yang Hua Zhu You-ning Xu Jian-gang Jiao Refaey M El-Wardany Xi'an Center China Geological SurveyMinistry of Natural ResourcesXi'an 710054China Observation and Research Station of Environmental Geology of Typical Mines in Shaanxi Province MNRXi'an 710054China Key Laboratory for Geo-hazards in Loess Area MNRXi'an 710054China Dalian Ocean and Fishery Comprehensive Administration Supervision Lochus Dalian 116000China Pingliang City Development and Reform Commission Pingliang 744000China School of earth Science and Resources Chang’an UniversityXi'an 710054China faculty of Science Al-Azhar UniversityAssiut 71524Egypt

This study aims to reveal the occurrence and origin of typical groundwater with high arsenic and fluoride concentrations in the loess area of the Guanzhong Basin—a Neogene faulted *** findings are as follows:(1)Groundwater samples with high arsenic and fluoride concentrations collected from the loess area and the terraces of the Weihe River accounted for 26%and 30%,respectively,of the total samples,with primary hydrochemical type identified as HCO_(3)-*** karst and sand areas exhibit relatively high groundwater quality,serving as preferred sources for water *** is recommended that local governments fully harness groundwater in these areas;(2)groundwater with high arsenic and fluoride concentrations in the loess area and the alluvial plain of rivers in Dali County is primarily distributed within the Guanzhong Basin,which represents the drainage zone of groundwater;(3)arsenic and fluoride in groundwater originate principally from natural and anthropogenic sources;(4.the human health risk assessments reveal that long-term intake of groundwater with high arsenic and fluoride concentrations pose cancer or non-cancer risks,which are more serious to kids compared to *** study provides a theoretical basis for the prevention and treatment of groundwater with high arsenic and fluoride concentrations in loess areas.

关键词： Arsenic Fluoride Groundwater Cancer risk Kid and adult Human health risk assessment Hydrogeological survey engineering Environmental geological survey engineering Loess areas

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整体封存体系的内涵

石油与天然气地质 2002年第2期23卷 107-114,126页

作者：戴少武贺自爱王津义余琪祥中国地质大学资源学院中石化石油勘探开发研究院荆州新区勘探研究所湖北荆州434100 中石化石油勘探开发研究院荆州新区勘探研究所

天然气易于散失的特性 ,决定了整体封存体系的高标准、严要求 ,评价的思维应以板桶理论 (木桶效应 )为指导 ,特别要重视局部对整体的决定作用。天然气的封存与石油不同 ,整体封存体系的内涵 ,必须强调结构的立体性与功能的有效性。川东... 详细信息

天然气易于散失的特性 ,决定了整体封存体系的高标准、严要求 ,评价的思维应以板桶理论 (木桶效应 )为指导 ,特别要重视局部对整体的决定作用。天然气的封存与石油不同 ,整体封存体系的内涵 ,必须强调结构的立体性与功能的有效性。川东、川东北的油气勘探实践表明 ,下部 (中、古生界 )的超压流体系统与上部 (中、新生界 )的高压 -静压流体系统 ,共同构成整体封存体系的立体性 ,实际是一个物性、浓度、压力为一体的复合封闭结构。有效性取决于 :(1)埋深 ;(2 )区域水动力 ;(3)晚期抬升 ;(4.抬升时限。立体性为构建 ,有效性为改建。

关键词：封存体系内涵立体性有效性思维定势综合效应

高分辨率层序地层学在大牛地气田山一段地层对比中的应用

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天然气地球科学 2003年第1期14卷 69-73页

作者：唐海发赵彦超于广瀛中国地质大学资源学院湖北武汉430074

根据陆相盆地高分辨率层序地层学原理 ,综合利用岩心、测井、地震资料 ,对鄂尔多斯盆地大牛地气田山一段地层层序进行了识别和划分 ,并对层序地层的特征和演化进行了分析。研究结果表明 ,山一段地层属于河流—三角洲沉积体系 ,其中辫状... 详细信息

根据陆相盆地高分辨率层序地层学原理 ,综合利用岩心、测井、地震资料 ,对鄂尔多斯盆地大牛地气田山一段地层层序进行了识别和划分 ,并对层序地层的特征和演化进行了分析。研究结果表明 ,山一段地层属于河流—三角洲沉积体系 ,其中辫状河三角洲平原较为发育。在这种沉积背景下 ,可以识别出 2种超短期旋回类型和 4.短期旋回层序。对这些旋回特征进行了描述 ,建立了该区的等时地层格架 ,以此为基础 ,将大牛地气藏山一段地层划分为

关键词：高分辨率层序地层学大牛地气田地层对比