检索结果-南通市图书馆

Journal of Palaeogeography 2021年第1期10卷 112-124页

作者： Wen-Jun Shang Mian-Ping Zheng Yong-Sheng Zhang jia-Ai Zhong En-Yuan Xing Yuan Peng Bao-ling Gui Kong li Institute of Mineral Resources Chinese Academy of GeosciencesBeijing 100037China Key Laboratory of Salt Lake Resources and Environment Ministry of Natural ResourcesBeijing 100037China Key Laboratory of Mineralization and Resource Evaluation Ministry of Natural ResourcesBeijing 100037China The 5th Detachment of Gold Force of the chinese People's Armed Police Force Xi'an 710199Shaanxi ProvinceChina

A new type of polyhalite potassium ore(NTPPO) was found in the Lower Triassic jialingjiang Formation, NE Sichuan Basin, SW China. It is water soluble, therefore can be exploited using the water-solution method, and is of great potential of economic value and research significance. Based on cores, thin sections, energy spectrum and SEM analyses, its microfeatures, macrofeatures and origin are discussed, and a genetic model is established to provide a scientific basis for future evaluation, prediction and exploration of potassium ore in the Sichuan Basin. It is proposed that the NTPPO was caused by storm activities:(1) the storm broke the original sedimentary polyhalite–gypsum beds, whose fragments were transported into the salt basin with high content of K+ and Mg2+;(2) in the basin, the polyhalite continued to be formed from gypsum by metasomatism with K-and Mg-rich brine;(3) during diagenesis, under high temperature and high pressure, K–Mg-rich brine from halite continued to replace anhydrite(or gypsum) to form polyhalite.

关键词： Puguang area Lower Triassic New type of polyhalite potassium ore Microfeatures and macrofeatures Storm event deposition

Responses of phreatophyte transpiration to falling water table in hyper-arid and arid regions,Northwest China

在线全文

学校读者我要写书评

暂无评论

China Geology 2021年第3期4卷 410-420页

作者： li-he Yin Dan-dan Xu Wu-hui jia Xin-xin Zhang Jun Zhang Xi’an Center China Geological Survey/Key Laboratory of Groundwater and Ecology in Arid Regions of China Geological SurveyXi’an 710054China Water Resources Research Institute of Shangdong Province Jinan 250013China chinese academy of geological sciences Beijing 100037China

Quantitative assessment of the impact of groundwater depletion on phreatophytes in(hyper-)arid regions is key to sustainable groundwater ***,a parsimonious model for predicting the response of phreatophytes to a decrease of the water table is lacking.A variable saturated flow model,HYDRUS-1D,was used to numerically assess the influences of depth to the water table(DWT)and mean annual precipitation(MAP)on transpiration of groundwater-dependent vegetation in(hyper-)arid regions of northwest *** exponential relationship is found for the normalized transpiration(a ratio of transpiration at a certain DWT to transpiration at 1 m depth,T_(a)^(*))with increasing DWT,while a positive linear relationship is identified between T_(a)^(*)and annual *** analysis shows that the model is insensitive to parameters,such as saturated soil hydraulic conductivity and water stress parameters,indicated by an insignificant variation(less than 20%in most cases)under±50%changes of these *** on these two relationships,a universal model has been developed to predict the response of phreatophyte transpiration to groundwater drawdown for(hyper-)arid regions using MAP *** estimated T_(a)^(*)from the model is reasonable by comparing with published measured values.

关键词： Groundwater depletion Phreatophytes Transpiration Numerical assessment Water table depth(DWT) Mean annual precipitation(MAP) (Hyper-)arid regions Hydrogeological survey engineering Northwest China.

Behavior of apatite in granitic melts derived from partial melting of muscovite in metasedimentary sources

在线全文

学校读者我要写书评

暂无评论

China Geology 2021年第1期4卷 44-55页

作者： li-E Gao ling-sen Zeng ling-hao Zhao jia-hao Gao Zhen Shang Key Laboratory of Deep-Earth Dynamics of Ministry of Natural Resources Institute of GeologyChinese Academy of Geological SciencesBeijing 100037China National Research Center for Geoanalysis Chinese Academy of Geological ScienceBeijing 100037China

Fluid-absent and fluid-fluxed melting of muscovite in metasedimentary sources are two types of crustal anatexis to produce the Himalaya Cenozoic *** grains separated from melts derived from the two types of parting melting have different geochemical *** leucogranites derived from fluid-fluxed melting have relict apatite grains and magmatic crystallized apatite grains,by contrast,there are only crystallized apatite grains in the leucogranites derived from fluid-absent ***,apatite grains crystallized from fluid-fluxed melting of muscovite contain higher Sr,but lower Th and LREE than those from fluid-absent melting of muscovite,which could be controlled by the distribution of partitioning coefficient(D_(Ap/Melt))between apatite and leucogranite.D_(Ap/Melt) in granites derived from fluidabsent melting is higher than those from fluid-fluxed ***,not only SiO_(2) and A/CNK,but also types of crustal anatexis are sensitive to trace element partition coefficients for *** addition,due to being not susceptible to alteration,apatite has a high potential to yield information about petrogenetic processes that are invisible at the whole-rock scale and thus is a useful tool as a petrogenetic indicator.

关键词： Apatite Partitioning coefficient Crustal anatexis Leucogranite Malashan Dome Tethyan Himalaya geological survey engineering Tibet

鄂尔多斯盆地苏里格气田西区与天环坳陷北段二叠系地层水地球化学特征、成因及来源对比

在线全文

学校读者我要写书评

暂无评论

地球科学与环境学报 2024年第5期46卷 663-676页

作者：颜凯李博偲徐建斌徐学敏丁佳伟郑少威潘志强何大祥长江大学油气地球化学与环境湖北省重点实验室湖北武汉430100 长江大学资源与环境学院湖北武汉430100 中国石油辽河油田分公司勘探开发研究院辽宁盘锦124010 中国地质调查局国家地质实验测试中心北京100037

鄂尔多斯盆地苏里格气田西区与天环坳陷北段是鄂尔多斯盆地重要的天然气富集区,其气水关系复杂,气水共存在二者上古生界二叠系气藏中大量存在,目前对上述两个地区二叠系地层水成因及来源的对比研究较为薄弱。通过对苏里格气田西区与天... 详细信息

鄂尔多斯盆地苏里格气田西区与天环坳陷北段是鄂尔多斯盆地重要的天然气富集区,其气水关系复杂,气水共存在二者上古生界二叠系气藏中大量存在,目前对上述两个地区二叠系地层水成因及来源的对比研究较为薄弱。通过对苏里格气田西区与天环坳陷北段二叠系35口井地层水样品开展地球化学特征研究,进一步揭示上述两个地区地层水成因、来源及保存条件的异同。结果表明:苏里格气田西区与天环坳陷北段二叠系地层水主体为CaCl_(2)型,总矿化度平均值分别为31.4和34.6 g·L^(-1);不同类型水化学参数指示了天环坳陷北段地层封闭性更好,两个地区整体经历了强烈的水-岩相互作用,油气保存条件好;苏里格气田近源运移成藏以及生烃强度与储层非均质性的特点控制了气、水分布格局,天环坳陷北段存在的一系列构造裂缝系统对该区域的气、水分布具有一定的调整作用;上述两个地区地层水主体为原始沉积地层水,地层中发生了斜长石的钠长石化及白云石化等作用,具有Ca^(2+)富集、Na^(+)轻微亏损、Mg^(2+)亏损的特点。综合研究表明,苏里格气田西区地层水没有统一的气、水界面,局部井位遭受了外来水等流体影响;天环坳陷北段各井位地层水可能属于统一的流体场。

关键词：地球化学地层水离子组成保存条件二叠系苏里格气田天环坳陷鄂尔多斯盆地

Disaster assessment for the“Belt and Road”region based on SDG landmarks

在线全文

学校读者我要写书评

暂无评论

Big Earth Data 2022年第1期6卷 3-17页

作者： li Wang Yuanhuizi He Yuelin Zhang Lei Wang Huicong jia Quan Zhou Bo Yu Meimei Zhang Zhengyang lin Fang Chen State Key Laboratory of Remote Sensing Science Aerospace Information Research InstituteChinese Academy of SciencesBeijingChina University of chinese academy of sciences BeijingChina Key Laboratory of Digital Earth Science Aerospace Information Research InstituteChinese Academy of SciencesBeijingChina

In this study,based on the EM-DAT(The Emergency Events Database)database,disaster assessment for the“Belt and Road”region was carried out in relation to the SDG_(13.1.1)indicator of the Sustainable Development Goals(SDGs)agenda launched in 2015.A new method for diagnosing trends in the SDG_(13.1.1)indicators based on the Theil-Sen median method is *** addition,using the data available in the EM-DAT,an overview of disaster records is used to quantify disasters for a total of 73 *** disaster trends for the period 2015‒2019 were found to demon-strate the following.(1)As a result of geological and climate con-ditions,Asia and Africa are high-risk disaster areas and disasters have caused considerable economic losses and affected the popu-lations in developing and underdeveloped countries in these regions.(2)The clear positive value ofΔs_(13.1.1)found for China reflects the country’s encouraging achievements in disaster preven-tion and mitigation.(3)The value of SDG_(13.1.1)was observed to be increasing in South Asia,northwest Africa and South Africa,with the increase in India and Mauritania being the most *** new method proposed in this paper allows the real trend in the SDG_(13.1.1)indicator in various countries to be derived and provides critical intelligence support for international disaster risk reduction plans and sustainable development goals.

关键词： EM-DAT database the Belt and Road region Sustainable Development Goals SDG13.1.1 indicator disaster risk reduction

湘赣中、南部寒武系纽芬兰统-第二统沉积环境

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

地球科学 2020年第7期45卷 2629-2649页

作者：郑宁李廷栋丁孝忠刘燕学程木伟中国地质科学院地质研究所北京100037 中国石油勘探开发研究院亚太研究所北京100083

为解决华南湘赣中、南部纽芬兰统-第二统沉积环境一直存在的深、浅海之争,通过对8条剖面岩石学特征、放射虫分布和岩相调查,结合地球化学数据等,分析了古水深等沉积环境特征.研究发现,湘赣中部娄底、邵阳、衡阳、萍乡地区可见疑似放射... 详细信息

为解决华南湘赣中、南部纽芬兰统-第二统沉积环境一直存在的深、浅海之争,通过对8条剖面岩石学特征、放射虫分布和岩相调查,结合地球化学数据等,分析了古水深等沉积环境特征.研究发现,湘赣中部娄底、邵阳、衡阳、萍乡地区可见疑似放射虫化石的分布,化石应沉积于当时的海盆中心区,且Si以生物来源为主.全区广泛发育弱水动力的水平层理,杂砂岩Td平均值为5.94,δ30Si平均值为0.1‰.本区牛蹄塘组、香楠组和牛角河组可划分5种岩相类型、3种岩相组合(海底扇中扇亚相、海底扇外扇亚相、陆隆亚相).结合主量、微量和稀土元素数据等综合分析,认为湘赣中、南部纽芬兰统-第二统沉积时期海水滞留缺氧,以半深海陆坡-陆隆环境为主,东南部略浅.

关键词：华南寒武系放射虫硅质板岩半深海环境沉积学

Research progress and key issues of ultra-deep oil and gas exploration in China

在线全文

学校读者我要写书评

暂无评论

Petroleum Exploration and Development 2023年第6期50卷 1333-1344页

作者： HE Dengfa jia Chengzao ZHAO Wenzhi XU Fengyin LUO Xiaorong liU Wenhui TANG Yong GAO Shanlin ZHENG Xiujuan li Di ZHENG Na China University of Geosciences(beijing) Beijing 100083China China National Petroleum Corporation Beijing 100724China PetroChina Research Institute of Petroleum Exploration and Development Beijing 100083China China Petroleum Society Beijing 100120China Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China Northwestern University Xi'an 710069China PetroChina Xinjiang Oilfield Company Karamay 834000China China Petroleum and Chemical Corporation Beijing 100728China China University of Petroleum(beijing) Beijing 102249China

Based on the recent oil and gas discoveries and geological understandings on the ultra-deep strata of sedimentary basins, the formation and occurrence of hydrocarbons in the ultra-deep strata were investigated with respect to the processes of basin formation, hydrocarbon generation, reservoir formation and hydrocarbon accumulation, and key issues in ultra-deep oil and gas exploration were discussed. The ultra-deep strata in China underwent two extensional-convergent cycles in the Meso-Neoproterozoic Era and the Early Paleozoic Era respectively, with the tectonic-sedimentary differentiation producing the spatially adjacent source-reservoir assemblages. There are diverse large-scale carbonate reservoirs such as mound-beach, dolomite, karst fracture-vug, fractured karst and faulted zone, as well as over-pressured clastic rock and fractured bedrock reservoirs. Hydrocarbons were accumulated in multiple stages, accompanied by adjusting and finalizing in the late stage. The distribution of hydrocarbons is controlled by high-energy beach zone, regional unconformity, paleo-high and large-scale fault zone. The ultra-deep strata endow oil and gas resources as 33% of the remaining total resources, suggesting an important successive domain for hydrocarbon development in China. The large-scale pool-forming geologic units and giant hydrocarbon enrichment zones in ultra-deep strata are key and promising prospects for delivering successive discoveries. The geological conditions and enrichment zone prediction of ultra-deep oil and gas are key issues of petroleum geology.

关键词： China ultra-deep oil and gas multi-cycle superimposed basin exploration progress exploration technology light oil natural gas

Research and Application of In-seam Seismic Survey Technology for Disaster-causing Potential Geology Anomalous Body in Coal Seam

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2020年第1期94卷 10-26页

作者： TENG Jiwen li Songying jia Mingkui liAN Jie liU Honglei liU Guodong WANG Wei Volker SCHAPE FENG Lei YAO Xiaoshuai WANG Kang YAN Yafen ZHANG Wanpeng Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China Jilin University Changchun 130026China University of chinese academy of sciences Beijing 100049China Research Institute Henan Energy&Chemical Industry Group Co.Ltd.Zhengzhou 450046China Henan Energy&Chemical Industry Group Co. Ltd.Zhengzhou 450046China Yima Coal Industry Group Co.Ltd. Yima 472300China College of Geosciences and Surveying Engineering China University of Mining and Technology-BeijingBeijing 100083China University of Illinois at Urbana-Champaign Champaign 61801USA geological Institute China Earthquake AdministrationBeijing 100029China Institute of Geographic Science and Natural Resources Research Chinese Academy of ScienceBeijing 100101China DMT GmbH&Co.KG Essen 45307Germany School of Resource&Environment Henan Polytechnic UniversityJiaozuo 454003China Henan University of Science and Technology Luoyang 471000 China

In order to effectively detect potential geology anomalous bodies in coal bearing formation,such as coal seam thickness variation,small faults,goafs and collapse columns,and provide scientific guidance for safe and efficient mining,the SUMMIT-II EX explosion-proof seismic slot wave instrument,produced by German DMT Company,was used to detect the underground channel wave with the help of transmission method,reflection method and transflective *** area detection experiment in mining face had been carried out thanks to the advantage of channel wave,such as its great dispersion,abundant geology information,strong anti-interference ability and long-distance *** experimental results showed that:(1)Coal seam thickness variation in extremely unstable coal seam has been quantitatively interpreted with an accuracy of more than 80%generally;(2)The faults,goafs and collapse columns could be detected and predicted accurately;(3)Experimental detection of gas enrichment areas,stress concentration regions and water inrush risk zone has been collated;(4)A research system of disaster-causing geology anomalous body detection by in-seam seismic survey has been built,valuable and innovative achievements have been *** of innovation obtained for the first time in this study indicated that it was more effective to detect disaster-causing potential geology anomalies by in-seam seismic survey than by ground seismic *** had significant scientific value and application prospect under complex coal seam conditions.

关键词： in-seam seismic survey technology(ISS) disaster-causing potential geology anomalous body dispersion feature mine geophysical prospecting quantitative interpretation

A new alvarezsaurid dinosaur from the Late cretaceous Qiupa Formation of Luanchuan,Henan Province,central China

在线全文

学校读者我要写书评

暂无评论

China Geology 2018年第1期1卷 28-35页

作者： Jun-chang Lu li Xu Hua-li Chang Song-hai jia Ji-ming Zhang Dian-song Gao Yi-yang Zhang Cheng-jun Zhang Fang Ding Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China Henan geological Museum Zhengzhou 450016China College of Earth sciences & Key Laboratory of Mineral Resources of Gansu Province Lanzhou UniversityLanzhou 730000China

An alvarezsaurid dinosaur skeleton was discovered from the Late Cretaceous Qiupa Formation of Luanchuan,Henan Province of eenttral *** represents a new alvarezsaurid dinosaur Qiupanykus zhangi *** ***.A phylogenetic analysis recovers Qiupanykus nested within the unresolved clade,which includes Asian and north American *** skeleton of the new specimen is preserved in association with *** eggshell morphologies show that these eggs belong to oviraptorid eggs,skeletal remains of which were discovered from the same *** alvarezsaurid skeleton associated with eggshell fragments may indicate that these eggs were broken by the strong thumb-claws of the former and that alvarezsaurid dinosaurs may be egg-eaters.

关键词： Vertebrate paleontology Alvarezsaurid dinosaur Qiupanykus Late Cretaceous Central China

Critical Metals Ga,Ge and In in the Global Pb-Zn Deposits:Current Understanding,Challenges and Perspectives

在线全文

学校读者我要写书评

暂无评论

Journal of Earth Science 2023年第4期34卷 1308-1311页

作者： Yi Zheng Peng-Peng Yu Zhan-Ke li Suo-Fei Xiong ling-li Zhou jia-Xi Zhou ChangMing Wang Yu-Miao Meng Yu Zhang Ye-jian Wang Jing Xu Yue Wu Lan-Xuan Guo Taiping Zhao Guangdong Provincial Key Lab of geological Process and Mineral Resources Survey School of Earth Sciences and Geological EngineeringSun Yat-sen UniversityGuangzhou 510275China State Key Laboratory of geological Processes and Mineral Resources School of Earth ResourcesChina University of GeosciencesWuhan 430074China Collaborative Innovation Center for Exploration of Strategic Mineral Resources China University of GeosciencesWuhan 430074China Department of Earth sciences Vrije Universiteit Amsterdam de Boelelaan 1085Amsterdam 1081HVNetherlands Key Laboratory of Critical Minerals Metallogeny in Universities of Yunnan Province School of Earth SciencesYunnan UniversityKunming 650500China State Key Laboratory of geological Processes and Mineral Resources School of Earth Sciences and ResourcesChina University of GeosciencesBeijing 100083China State Key Laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of ScienceGuiyang 550081China Key Laboratory of Metallogenic Prediction of Nonferrous Metals and geological Environment Monitoring School of Geosciences and Info-PhysicsCentral South UniversityChangsha 410083China Key Laboratory of Submarine Geosciences Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Zijin School of Geology and Mining Fuzhou UniversityFuzhou 350108China Key Laboratory of Exploration Technologies for Oil and Gas Resources Key Laboratory of Petroleum Geochemistry and EnvironmentYangtze UniversityWuhan 430100China Zhongjin lingnan Nonfemetal Co. LtdShenzhen 518000China Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China

BACKGROUND A spectrum of strategically critical metals, such as gallium(Ga), germanium(Ge) and indium(In), with promising applications in green and high-tech fields, are produced as byproducts of zinc ores in a variet... 详细信息

关键词： magmatic hydrothermal porphyry