检索结果-南通市图书馆

海南岛富文金银多金属矿床成矿流体演化:来自流体包裹体和H-O同位素证据

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

地球化学 2024年第4期53卷 564-576页

作者：赵朝霞许德如官军单强陈根文陈晓清黄沁怡王智琳中国科学院广州地球化学研究所矿物学与成矿学重点实验室广东广州510640 中国科学院深地科学卓越创新中心广东广州510640 中国科学院大学北京100049 东华理工大学核资源与环境国家重点实验室江西南昌330013 海南省海洋地质资源与环境重点实验室海南省地质调查院海南海口570206 中南大学地球科学与信息物理学院有色金属成矿预测与地质环境监测教育部重点实验室湖南长沙410083

富文金银多金属矿床位于海南岛雷鸣盆地,为中型高硫化物含金石英脉型金矿床。主要金属矿物有自然金、银金矿、黄铁矿、毒砂、闪锌矿、方铅矿及少量黄铜矿;非金属矿物主要为石英、碳酸盐矿物。金的赋存状态主要以含金矿物形式出现,分布... 详细信息

富文金银多金属矿床位于海南岛雷鸣盆地,为中型高硫化物含金石英脉型金矿床。主要金属矿物有自然金、银金矿、黄铁矿、毒砂、闪锌矿、方铅矿及少量黄铜矿;非金属矿物主要为石英、碳酸盐矿物。金的赋存状态主要以含金矿物形式出现,分布于石英、黄铁矿、毒砂裂隙和被包裹在闪锌矿中。该矿床成矿过程可分为早、中、晚3个阶段,其中,中阶段为主成矿阶段,金主要在中阶段沉淀。早阶段流体包裹体为纯CO_(2)型、富CO_(2)型和少量富液相水溶液包裹体,中阶段为纯CO_(2)型、富CO_(2)型、富液相水溶液型和含子矿物多相包裹体,晚阶段为富液相水溶液包裹体。从早阶段到晚阶段,包裹体均一温度峰值分别为320~330℃、205~225℃和130~140℃,盐度峰值分别为3.50%~5.00%NaCl_(eqv)、2.80%~3.50%NaCl_(eqv)和2.25%~3.00%NaCl_(eqv),指示成矿流体以中温、低盐度为特征。包裹体激光拉曼光谱分析表明,富文矿床的流体包裹体成分以H_(2)O为主,富含CO_(2),并含有少量硫化物。主成矿阶段石英中流体包裹体的δD值为−53.9‰~−45.4‰,δ^(18)OH_(2)O值为1.5‰~7.5‰,反映成矿流体具有岩浆水和大气降水两种来源。进一步利用纯CO_(2)包裹体和纯H_(2)O包裹体等容线相交法,估算主成矿阶段的成矿温度为245~315℃,成矿压力为64~130 MPa。综合研究表明,富文矿床是与侵入岩有关的高硫化物金银多金属矿床,其主成矿阶段发生的流体沸腾和不混溶是金沉淀的主要机制。

关键词：流体包裹体 H-O同位素捕获压力激光拉曼富文金银多金属矿床

Three dimensional viscoelastic simulation on dynamic evolution of stress field in North China induced by the 1966 Xingtai earth-quake

在线全文

学校读者我要写书评

暂无评论

Acta Seismologica Sinica(English Edition) 2001年第5期14卷 512-523页

作者： chen Lian-wang Institute of Crustal Dynamics China Seismological Bureau Beijing China center for analysis and prediction China Seismological Bureau Beijing China

Using three dimensional (3D) viscoelastic finite element method (FEM) we study the dynamic evolution pattern of the coseismic change of Coulomb failure stress and postseismic change, on time scale of hundreds years, of rheological effect induced by the MS=7.2 Xingtai earthquake on March 22, 1966. Then, we simulate the coseismic disturbance in stress field in North China and dynamic change rate on one-year scale caused by the Xingtai earthquake and Tangshan earthquake during 15 years from 1966 to 1980. Finally, we discuss the triggering of a strong earthquake to another future strong earthquake.

关键词： Xingtai earthquake Coulomb failure stress dynamic stress evolution 3D viscoelastic model P315.72 + 6

A Preliminary analysis of the Seismogenic Structure of the Akto M_S6. 7 Earthquake Sequence on November 25, 2016

在线全文

学校读者我要写书评

暂无评论

Earthquake Research in China 2019年第3期33卷 418-430页

作者： LIANG Shanshan XU Zhiguo chen Hongfeng ZOU Liye LIU Jingguang China Earthquake Networks center China Earthquake AdministrationBeijing 100045China Key Laboratory of Marine Disaster prediction Technology National Marine Environmental Forecasting CenterState Oceanic AdministrationBeijing 100081China Key Laboratory of Computational Geodynamics University of Chinese Academy of SciencesCASBeijing 100049China

In this study,data from the Xinjiang regional network and IRIS shared global stations are used to relocate the Akto MS6. 7 earthquake sequence on November 25,2016 by using double difference location method. Three earthquakes of MS4. 8,MS6. 7 and MS5. 0 are inverted by using the g CAP method,and the focal mechanism solutions are *** to the results of relocating,the location of the main shock is 39. 22°N,73. 98°E,the distribution of the earthquake sequence is about 70 km in length,and the focal depth is mainly within the range of 5-20 km. The plane and depth profiles of the earthquake sequence show that aftershocks extended in SEE direction after the main shock and the dip angle of fault plane is steep. Focal mechanism results show that the three earthquakes are characterized by strike-slip movement. Based on the results of field geological investigation,it is inferred that the seismogenic fault of the Akto earthquake is Muji fault,which is located at the northernmost end of the Kongur extensional *** possible cause of this earthquake is that the Indian Plate continues to push northward,and during this compression process,the Indian Plate is affected by the clockwise rotation of the Tarim basin,which causes the accumulation of right-lateral action of the Muji fault,resulting in this earthquake.

关键词： Akto MS6.7 earthquake Earthquake location Focal mechanism Muji fault Kongur extensional system

在线全文

学校读者我要写书评

暂无评论

基于产排预测的园区固废管理系统设计与应用

再生资源与循环经济 2023年第2期16卷 28-32页

作者：石靖靖陈盛龙李强夏诏杰张文娟中国科学院过程工程研究所、中国科学院绿色过程与工程重点实验室、战略金属资源绿色循环利用国家工程研究中心北京100190 中国科学院过程工程研究所、多相复杂系统国家重点实验室北京100190 中国科学院大学化学工程学院北京100049 沈阳化工大学化学工程学院辽宁沈阳110142

针对现有园区信息化系统缺乏生产调优支撑功能的问题,融合固废产生和利用生产线生产监控、产品质检等多源数据,设计基于产排预测的园区固废信息管理系统。该系统依托机器学习算法,重点突破多源异构固废管理关联数据采集和管理、生产线... 详细信息

针对现有园区信息化系统缺乏生产调优支撑功能的问题,融合固废产生和利用生产线生产监控、产品质检等多源数据,设计基于产排预测的园区固废信息管理系统。该系统依托机器学习算法,重点突破多源异构固废管理关联数据采集和管理、生产线运行状态和相关固废排放实时预测、生产系统资源环境综合效益分析等技术和方法,实现企业和生产线层面固废动态追踪、预测预警和综合分析功能,为企业和园区固废产排全过程智能管控提供支撑。

关键词：产排预测运行状态评价固废管理系统