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西天山“亚洲金腰带”及其动力背景和成矿控制与找矿

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地学前缘 2014年第5期21卷 128-155页

作者：薛春纪赵晓波莫宣学董连慧顾雪祥 bakhtiar nurtaev Nikolay Pak 张招崇王新利俎波张国震冯博刘家瑛地质过程与矿产资源国家重点实验室中国地质大学(北京)地球科学与资源学院北京100083 新疆维吾尔自治区地质矿产开发局新疆乌鲁木齐830000 乌兹别克斯坦科学院地质与地球物理研究所塔什干100041 吉尔吉斯斯坦科学院地质与地球物理研究所比什凯克720481

天山西段,从乌兹别克斯坦向东,经吉尔吉斯斯坦到中国新疆西部,在中天山及南北缘巨型和世界级金矿集中产出,构成世人瞩目的巨型金成矿带,即"亚洲金腰带"。为什么能在这个东西延伸近2 500km的带状区域形成"亚洲金腰带"?成矿具有怎样的动... 详细信息

天山西段,从乌兹别克斯坦向东,经吉尔吉斯斯坦到中国新疆西部,在中天山及南北缘巨型和世界级金矿集中产出,构成世人瞩目的巨型金成矿带,即"亚洲金腰带"。为什么能在这个东西延伸近2 500km的带状区域形成"亚洲金腰带"?成矿具有怎样的动力背景?受何要素控制又是怎样发生发展?"亚洲金腰带"内巨型和世界级金矿床主要产在乌兹别克斯坦和吉尔吉斯斯坦,能否在新疆西天山实现金矿找矿重大突破?都是颇受关注的重大地质找矿问题。论文在较多学习前人成果并结合作者研究结果基础上,综述了"亚洲金腰带"动力背景和地质环境、金矿床基本特征,分析了成矿系统类型和关键控制,对接了新疆西天山与乌兹别克斯坦-吉尔吉斯斯坦的构造成矿带。研究认为Terskey洋和Turkestan-南天山洋的发生、发展和消亡是"亚洲金腰带"基本地球动力学背景;"亚洲金腰带"中巨型和世界级金矿分属造山型和斑岩型两个主要成矿系统,"古老地壳+构造变形+岩浆热液"是造山型金成矿关键控制和勘查准则,而成熟岛弧环境、深源岩浆浅成侵入、叠加复合长期成矿是斑岩型金成矿关键控制;中天山是"亚洲金腰带"的核心,自西而东从乌兹别克斯坦经吉尔吉斯斯坦到我国新疆西天山具有可对接和贯通性,"亚洲金腰带"向东延伸确切进入我国新疆西天山;新疆西天山那拉提山—额尔宾山一带的中天山及南北缘造山型金成矿要素齐全且配置好,有望实现金矿找矿重大突破。

关键词： “亚洲金腰带” 造山型金矿斑岩型金矿金矿找矿西天山

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中国及境外天山铅锌成矿作用与找矿方向

地球科学与环境学报 2021年第1期43卷 36-79页

作者：高荣臻薛春纪满荣浩代俊峰赵晓波赵云亚夏尔·亚力坤 bakhtiar nurtaev Nikolay PAK 莫宣学中国地质大学(北京)地球科学与资源学院北京100083 中国地质大学(北京)地质过程与矿产资源国家重点实验室北京100083 东北大学资源与土木工程学院辽宁沈阳110819 东华理工大学地球科学学院江西南昌330013 新疆大学地质与矿业工程学院新疆乌鲁木齐830047 乌兹别克斯坦地质与矿产资源委员会地质与地球物理研究所塔什干100041 吉尔吉斯斯坦科学院地质研究所比什凯克720040

中国及境外天山铅锌矿床多有发现,如哈萨克斯坦Tekeli、Shalkiya和Achisai,乌兹别克斯坦Kurgashinkan和Uchkulach,塔吉克斯坦Altyntopkan,中国新疆乌拉根、彩霞山、阿齐山、阿尔恰勒等大型—超大型铅锌矿床,构成了天山巨型铅锌成矿带。... 详细信息

中国及境外天山铅锌矿床多有发现,如哈萨克斯坦Tekeli、Shalkiya和Achisai,乌兹别克斯坦Kurgashinkan和Uchkulach,塔吉克斯坦Altyntopkan,中国新疆乌拉根、彩霞山、阿齐山、阿尔恰勒等大型—超大型铅锌矿床,构成了天山巨型铅锌成矿带。这些铅锌矿床形成于怎样的地球动力学背景?铅锌成矿的基本地质特征是什么?有哪些重要成矿类型?受何要素控制?未来找矿突破方向在哪里?这些都是颇受关注的地质找矿问题。在广泛矿产地质调查和综合分析前人研究成果的基础上,将中国及境外天山作为整体,综述了天山造山带构造演化和重要铅锌成矿环境、典型矿床特征与成矿系统/成矿类型,总结了天山地区铅锌成矿演化过程,并分析了区域铅锌成矿特点与找矿突破方向。结果表明:天山造山带经历了前寒武纪古陆形成、洋-陆俯冲增生、陆-陆碰撞造山和陆内成盆4个地球动力学过程,先后出现了元古宙古陆边缘裂陷盆地、古生代洋-陆俯冲增生岛弧、晚古生代陆-陆碰撞造山与中—新生代山前/山间盆地4类重要铅锌成矿环境。在元古宙古陆边缘裂陷盆地环境,主要受同生断层、还原性细碎屑岩-碳酸盐岩建造等控制,形成了古陆边缘裂陷盆地铅锌成矿系统与SEDEX型铅锌矿床;在古生代洋-陆俯冲增生岛弧环境,主要受弧岩浆活动、断裂构造、地层等控制,形成了增生岛弧铅锌成矿系统与矽卡岩型、斑岩型、岩浆热液脉型、VMS型铅锌矿床;在晚古生代陆-陆碰撞造山环境,主要受被动陆缘海相碳酸盐岩、张性开放空间、逆冲推覆构造等控制,形成了碰撞造山铅锌成矿系统与MVT型铅锌矿床;在中—新生代山前/山间盆地环境,主要受盆地三元结构、油气运移与红层“漂白”、硫酸盐岩等控制,形成了山前/山间盆地铅锌成矿系统与砂岩型铅锌矿床。由此可见,天山地区存在多种铅锌成矿环境和不同铅锌成矿系统与成矿类型,其铅锌成矿表现出长时间、多期次、多类型叠合成矿和一定继承性的演化特点。尽管沉积岩容矿铅锌矿床(包括SEDEX型、MVT型和砂岩型)在全球铅锌矿产资源中占据主导地位,而在天山地区增生岛弧铅锌成矿系统则占有更为重要的地位,特别是北天山岛弧带,哈萨克斯坦—伊犁板块南、北缘和中天山地块应该给予高度重视。与此同时,哈萨克斯坦—伊犁板块北缘与东天山中天山地块元古界SEDEX型铅锌找矿、境外中天山地块北缘与南天山造山带古生代被动陆缘碳酸盐岩地层MVT型铅锌找矿、新疆西南天山山前/山间盆地砂岩型铅锌找矿前景良好,也仍值得持续关注。

关键词：铅锌矿床成矿作用成矿环境成矿类型控矿要素成矿特点找矿方向天山

西天山金铜多金属重要成矿类型、成矿环境及找矿潜力

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中国地质 2015年第3期42卷 381-410页

作者：薛春纪赵晓波张国震莫宣学顾雪祥董连慧赵树铭米登江 bakhtiar nurtaev Nikolay Pak 李志丹王新利俎波亚夏尔亚力坤冯博地质过程与矿产资源国家重点实验室中国地质大学(北京)地球科学与资源学院北京100083 新疆地质矿产勘查开发局新疆乌鲁木齐830000 新疆地质矿产勘查开发局第一区域地质调查大队新疆乌鲁木齐830011 中国冶金地质总局新疆地质勘查院新疆乌鲁木齐830006 乌兹别克斯坦科学院地质与地球物理研究所乌兹别克斯坦塔什干100041 吉尔吉斯斯坦科学院地质与地球物理研究所乌兹别克斯坦比什凯克720481 天津地质矿产研究所天津300170

西天山跨乌兹别克斯坦、塔吉克斯坦、吉尔吉斯斯坦、哈萨克斯坦南部和中国新疆西天山,东西绵延2500 km,是"亚洲金腰带"核心地带,金铜铅锌矿产优势明显,中国新疆西天山金铜铅锌重大找矿发现令人期待。通过广泛深入的文献调研和较全面的... 详细信息

西天山跨乌兹别克斯坦、塔吉克斯坦、吉尔吉斯斯坦、哈萨克斯坦南部和中国新疆西天山,东西绵延2500 km,是"亚洲金腰带"核心地带,金铜铅锌矿产优势明显,中国新疆西天山金铜铅锌重大找矿发现令人期待。通过广泛深入的文献调研和较全面的地质矿产调查,论文针对重要成矿类型、成矿环境和找矿潜力的研究表明,西天山金铜铅锌成矿重要类型是造山型金矿、斑岩型金铜矿、SEDEX型和砂岩型铅锌矿等。造山型金矿形成于古生代俯冲增生和碰撞造山两类地质环境,斑岩型金铜矿形成于古生代不同时期的成熟岛弧环境,SEDEX型铅锌矿在新元古代陆缘盆地富集,砂岩型铅锌矿形成于中—新生代山前盆地。西天山金铜铅锌成矿类型和环境优越,找矿潜力巨大,新疆西天山有望实现金铜铅锌找矿持续重大突破。本文为西天山区域成矿研究和金铜铅锌找矿勘查提供了新的参考和引导。

关键词：区域金铜铅锌成矿矿床类型成矿环境找矿潜力西天山

西天山巨型金铜铅锌成矿带构造成矿演化和找矿方向

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地质学报 2014年第12期88卷 2490-2531页

作者：薛春纪赵晓波莫宣学陈毓川董连慧顾雪祥张招崇 bakhtiar nurtaev Nikolay PAK 李志丹王新利张国震亚夏尔亚力坤冯博俎波刘家瑛地质过程与矿产资源国家重点实验室中国地质大学地球科学与资源学院北京100083 中国地质科学院北京100037 新疆维吾尔自治区地质矿产勘查开发局乌鲁木齐830000 乌兹别克斯坦科学院地质与地球物理研究所塔什干100041 吉尔吉斯斯坦科学院地质与地球物理研究所比什凯克720481 天津地质矿产研究所天津300170

西天山产有Muruntau、Kumtor、Kalmakyr等巨型金矿床和Kalmakyr、Dal′neye等世界级铜矿床以及Tekeli等超大型铅锌矿床,构成世人瞩目的巨型金铜铅锌成矿带。新疆西天山金、铜、铅锌矿找矿面临重大突破,不断认识乌兹别克斯坦—吉尔吉斯... 详细信息

西天山产有Muruntau、Kumtor、Kalmakyr等巨型金矿床和Kalmakyr、Dal′neye等世界级铜矿床以及Tekeli等超大型铅锌矿床,构成世人瞩目的巨型金铜铅锌成矿带。新疆西天山金、铜、铅锌矿找矿面临重大突破,不断认识乌兹别克斯坦—吉尔吉斯斯坦—哈萨克斯坦东南部—中国新疆西部整个西天山的构造成矿过程,明确新疆西天山金、铜、铅锌矿重大找矿突破方向,预测大型矿集区十分必要。本文通过境内外野外地质矿产广泛调研和对相关文献综合研究,认为西天山造山带形成演化经历前寒武纪古陆边缘裂陷盆地、古生代洋-陆俯冲增生、晚古生代陆-陆碰撞造山、中—新生代坳陷盆地四个主要地质过程,造就出四类重要成矿系统和类型:1元古宙边缘裂陷盆地铅锌成矿系统SEDEX型;2古生代俯冲岛弧金铜铅锌成矿系统斑岩-矽卡岩-浅成低温热液型;3晚古生代碰撞造山金铅锌成矿系统造山型-MVT;4中—新生代坳陷盆地铅锌铜成矿系统砂岩型。综合对比西天山境内外成矿系统地质发育特点,预测新疆西天山那拉提-额尔宾中天山隆起带是造山型金矿找矿重大突破区,吐拉苏盆地和巴音布鲁克中天山以及那拉提山北坡有望实现斑岩型金铜找矿突破,伊犁地块南缘元古宇SEDEX型铅锌找矿值得关注,山间/山前盆地无疑是砂岩型铅锌铜找矿优先选择。

关键词：构造演化边缘裂陷盆地铅锌矿岛弧金铜铅锌矿造山型金矿坳陷盆地铅锌铜矿找矿预测西天山

中-吉-乌-哈天山变形带容矿金成矿系统：成矿环境和控矿要素与找矿标志

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中-吉-乌-哈天山变形带容矿金成矿系统：成矿环境和控矿要素与找...

The impact of fundamental factors and sentiments on the valuation of cryptocurrencies

2020年中国地球科学联合学术年会

作者：薛春纪赵晓波赵伟策赵云张国震 bakhtiar nurtaev Nikolay Pak 莫宣学地质过程与矿产资源国家重点实验室中国地质大学地球科学与资源学院中国地质调查局天津地质调查中心中国地质科学院天津地质矿产研究所乌兹别克斯坦矿产资源部地质与地球物理研究所吉尔吉斯斯坦科学院地质与地球物理研究所

天山是全球第二大金矿富集区,若干变形带容矿的世界级和大型-超大型金矿床东西成带,横贯中国新疆中部-吉尔吉斯斯坦-乌兹别克斯坦-哈萨克斯坦东南部,构成巨型跨境金成矿带,成为世界上十分罕见的变形带容矿金成矿系统。这个金成矿系统形...

天山是全球第二大金矿富集区,若干变形带容矿的世界级和大型-超大型金矿床东西成带,横贯中国新疆中部-吉尔吉斯斯坦-乌兹别克斯坦-哈萨克斯坦东南部,构成巨型跨境金成矿带,成为世界上十分罕见的变形带容矿金成矿系统。这个金成矿系统形成于怎样的地质环境?成矿受哪些要素控制?找矿勘查的标志是什么?都是学术和工业界高度关注的重大地质找矿问题。

关键词：

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Blockchain(Research and Applications) 2023年第4期4卷 39-49页

作者： Tiam bakhtiar Xiaojun Luo Ismail Adelopo Department of Accounting and Finance College of Business and LawUniversity of the West of EnglandBristol BS161QYUnited Kingdom

The valuation of cryptocurrencies is important given the increasing significance of this potential asset class.However,most state-of-the-art cryptocurrency valuation methods only focus on one of the fundamental factors or sentiments and use out-of-date data sources.In this study,a robust cryptocurrency valuation method is developed using up-to-date datasets.Using various panel regression models and moving-window regression tests,the impacts of fundamental factors and sentiments in the valuation of cryptocurrencies are explored with data covering from January 1,2009 to April 30,2023.The research shows the importance of sentiments and suggests that the fear and greed index can indicate when to make a cryptocurrency investment,while Google search interest in cryptocurrency is crucial when choosing the appropriate type of cryptocurrency.Moreover,consensus mechanism and initial coin offering have significant effects on cryptocurrencies without stablecoins,while their impacts on cryptocurrencies with stablecoins are insignificant.Other fundamental factors,such as the type of supply and the presence of smart contracts,do not have a significant influence on cryptocurrency.Findings from this study can enhance cryptocurrency marketisation and provide insightful guidance for investors,portfolio managers,and policymakers in assessing the utility level of each cryptocurrency.

关键词： Cryptocurrency Valuation Market sentiment Fundamental factors Fear and greed index Google search index

FeNi@CNS nanocomposite as an efficient electrochemical catalyst for N_(2)-to-NH_(3) conversion under ambient conditions

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Journal of Materials Science & Technology 2022年第8期103卷 59-66页

作者： Tayiba Ilyas Fazal Raziq Nasir Ilyas Liuxin Yang Sharafat Ali Amir Zada Syedul Hasnain bakhtiar Yong Wang Huahai Shen Liang Qiao School of Physics University of Electronic Science and Technology of ChinaChengdu 610054China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 10084China Department of Chemistry Abdul Wali Khan University of MardanMardanKPK 23200Pakistan Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Institute of Nuclear Physics and Chemistry Chinese Academy of Engineering PhysicsMianyang 621900China

The electrocatalytic nitrogen reduction reaction(NRR)has emerged as a promising renewable energy source and a feasible strategy as an alternative to Haber-Bosch ammonia(NH_(3))synthesis.However,finding an efficient and cost-effective robust catalyst to activate and cleave the extremely strong triple bond in nitrogen(N_(2))for electrocatalytic NRR is still a challenge.Herein,a FeNi@CNS nanocomposite as an efficient catalyst for N_(2) fixation under ambient conditions is designed.This FeNi@CNS nanocomposite was prepared by a simple water bath process and post-calcination.The FeNi@CNS is demonstrated to be a highly efficient NRR catalyst,which exhibits better NRR performance with exceptional Faradaic efficiency of 9.83%and an NH_(3) yield of 16.52μg h^(−1) cm^(−2) in 0.1 M Na_(2)SO_(4) aqueous solution.Besides,high stability and reproducibility with consecutive 6 cycles for two hours are also demonstrated throughout the NRR electrocatalytic process for 12 h.Meanwhile,the FeNi@CNS catalyst encourages N_(2) adsorption and activation as well as effectively suppressing competitive HER.Therefore,this earth-abundant FeNi@CNS catalyst with a subtle balance of activity and stability has excellent potential in NRR industrial applications.

关键词： Electrocatalytic nitrogen reduction Transition-metal alloy FeNi@CNS catalyst N_(2)fixation to NH_(3)

Urban restaurants and online food delivery during the COVID-19 pandemic:a spatial and socio-demographic analysis

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International Journal of Digital Earth 2023年第1期16卷 1725-1751页

作者： bakhtiar Feizizadeh Davoud Omrazadeh Mohammad Ghasemi Samaneh Bageri Tobia Lakes Robert Kitzmann Abolfazl Ghanbari Thomas Blaschke Department of Remote Sensing and GIS University of TabrizTabrizIran Department of Geography Humboldt-Universität zu BerlinBerlinGermany IN3 Universitat Oberta de CatalunyaBarcelonaSpain Department of Geoinformatics-Z_GIS University of SalzburgSalzburgAustria

In this research,we analyzed the delivery service areas of restaurants,customer satisfaction,and restaurant sales of urban restaurants during the COVID-19 pandemic.We obtained the datasets on food ordering options and restaurant rankings based on Google Maps,Open Street Map,and widely known online food order applications in Iran.Based on this analysis we further modeled suitable areas for future extension of restaurants.We analyzed the online food order data of restaurants’sales and food delivery reports for 1050 restaurants in the city of Tabriz.We collected and analyzed data on the restaurant locations,the number of food orders for each restaurant,and the number of customers and their locations.Our results revealed that the spatial dimension of the newly emerging food delivery areas is of utmost importance for the success of restaurants.This indicates that an optimal location is not longer only dependent on factors like population density and competitors in the direct vicinity but on the services density even from more distant competitors.The results indicate that an optimized spatial distribution of the restaurants together with efficient quality in services can contribute to optimistic urban development.

关键词： Urban restaurant services area mapping success factors customer satisfaction COVID-19 spatial analysis

PH-responsive strontium nanoparticles for targeted gene therapy against mammary carcinoma cells

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Asian Journal of Pharmaceutical Sciences 2021年第2期16卷 236-252页

作者： Athirah bakhtiar Ezharul Hoque Chowdhury School of Pharmacy Monash University MalaysiaSelangor 47500Malaysia Jeffrey Cheah School of Medicine and Health Sciences Monash University MalaysiaSelangor 47500Malaysia

Genetic intervention via the delivery of functional genes such as plasmid DNA(pDNA)and short-interfering RNA(siRNA)offers a great way to treat many single or multiple genetic defects effectively,including mammary carcinoma.Delivery of naked therapeutic genes or siRNAs is,however,short-lived due to biological clearance by scavenging nucleases and circulating monocytes.Low cellular internalization of negatively-charged nucleic acids further causes low transfection or silencing activity.Development of safe and effectual gene vectors is therefore undeniably crucial to the success of nucleic acid delivery.Inorganic nanoparticles have attracted considerable attention in the recent years due to their high loading capacity and encapsulation activity.Here we introduce strontium salt-based nanoparticles,namely,strontium sulfate,strontium sulfite and strontium fluoride as new inorganic nanocarriers.Generated strontium salt particles were found to be nanosized with high affinity towards negatively-charged pDNA and siRNA.Degradation of the particles was seen with a drop in pH,suggesting their capacity to respond to pH change and undergo dissolution at endosomal pH to release the genetic materials.While the particles are relatively nontoxic towards the cells,siRNA-loaded SrF 2 and SrSO 3 particles exerted superior transgene expression and knockdown activity of MAPK and AKT,leading to inhibition of their phosphorylation to a distinctive extent in both MCF-7 and 4T1 cells.Strontium salt nanoparticles have thus emerged as a promising tool for applications in cancer gene therapy.

关键词： Strontium Gene therapy Breast cancer SiRNA Nanoparticles