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^(40)Ar-^(3.)Ar thermochronology of two ductile shear zones from Yiwulüshan,West liaoning Region: Age constraints on the Mesozoic tectonic events

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Chinese Science bulletin 2002年第13期47卷 1113-1118页

作者： zhang xiaohui, li {3. & pu zhipingresearch center of mineral resources exploration, institute of geology and geophysics, Chinese academy of {13., beijing 100101, china guangzhou institute of geochemistry, Chinese academy of {13., guangzhou 51 research center of mineral {3. exploration Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China guangzhou institute of geochemistry Chinese Academy of Sciences Guangzhou China

Two ductile shear zones trending EW and NNE respectively not only controlled the tectonic framework of the northern North china, but also constrained the geody-namic background for gold mineralization in this region. Field observations and microstructural analyses reveal that the EW trending ductile shear zones are mainly contributed to dextral compressional deformation resulting from top-to-the-southeast oblique thrust shearing, whereas the NNE trending ones are genetically related to sinistral strike-slip and extensional faulting. One sample from the former yielded an 40Ar-3.Ar plateau age of (219±4) Ma (bi) and two samples from the latter gave 40Ar-3.Ar plateau ages of (116± 2) Ma (bi) and (127±3. Ma (bi). These ages provide constraints on the top-to-the-southeast oblique thrusting event occurring in Late Triassic and the sinistral extensional and strike-slip faulting event which occurred in Early Cretaceous.

关键词： 40Ar-3.Ar age biotite ductile shear zone West liaoning Region.

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^(40)Ar-^(3.)Ar ages of the Louzidian-Dachengzi ductile shear zone near Chifeng,Inner Mongolia and their tectonic significance

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Chinese Science bulletin 2002年第15期47卷 1292-1297页

作者： zhang xiaohui, li {3., pu zhiping & WANG Huiresearch center for mineral resources exploration, institute of geology and geophysics, Chinese academy of {13., beijing 100101, china guangzhou institute of geochemistry, Chinese academy of {13., G research center for mineral {3. exploration Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China guangzhou institute of geochemistry Chinese Academy of Sciences Guangzhou China

The Louzidian normal fault occurs as the eastern detachment fault of the Kalaqin metamorphic core complex. Field observations and microstructural analyses reveal that the Louzidian-Dachengzi ductile shear zone developed in its lower-plate was genetically related to sinistral strike-slips and extensional faulting. Two samples from this ductile shear zone yield 40Ar-3.Ar plateau ages of 13. Ma (bi) and 126 Ma (Kp), which are concordant with their isochron ages. The plateau age of 13. Ma (bi) records the formation age of the ductile shear zone. The inconsistent relationship between the earlier strike-slip ductile shear zone and the later normal fault makes the Kalaqin Quasi-metamorphic core complex distinctive from Cordil-leran nietamorphic core complex. These ages provide important geochronological data for {3.tting constraints on the formation age and genesis of such ductile shear zones.

关键词： 40Ar-3.Ar age Sinistral strike-slip Louzidian-Dachengzi ductile shear zone Metamorphic core complex.

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40Ar-3.Ar Thermochronology of two ductile shear zones from Yiwuliishan,West liaoning:age constraints on the Mesozoic tectonic events

40Ar-39Ar Thermochronology of two ductile shear zones from Y...

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中国科学院地质与地球物理研究所2002学术年会

作者： zhang xiaohui~a li tiesheng~a pu zhiping~b a.research center of mineral resources exploration,institute of geology and geophysics,Chinese academy of {3.,beijing 100101,china b.guangzhou institute of geochemistry,cas,guangzhou 510640,china

Two ductile shear zones trending EW and NNE respectively not only controlled the tectonic framework of the northern North china,but also constrained the geodynamic background for gold mineralization at this *** observations and microstructural analyses revealed that the EW trending ductile shear zones are mainly contributed to dextral compressional deformation resulted from top-to-the southeast oblique thrust shearing,whereas the NNE trending ones are genetically related to sinistral strike-slip and extensional *** sample from the former yielded an Ar-Ar plateau age of 219±4 Ma(bi) and two samples from the latter gave Ar-Ar plateau ages of 116±2 Ma(bi) and 127±3.Ma(bi).These ages provide constraints on the top-to-the-southeast oblique thrusting event occurred in Late Triassic and the sinistral extensional and strike-slip faulting event occurred in Early Cretaceous.

关键词： 40Ar-3.Ar age biotite ductile shear zone West liaoning

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The first power generation test of hot dry rock resources exploration and production demonstration project in the Gonghe basin,Qinghai Province,china

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china geology 2022年第3期5卷 372-382页

作者： Er-yong zhang Dong-guang Wen Gui-ling Wang Wei-de Yan Wen-shi Wang Cheng-ming Ye Xu-feng li Huang Wang Xian-chun Tang Wei Weng Kuan li Chong-yuan zhang Ming-xing liang Hong-bao Luo Han-yue Hu Wei zhang Sen-qi zhang Xian-peng Jin Hai-dong Wu lin-you zhang Qing-da Feng Jing-yu Xie Dan Wang Yun-chao He Yue-wei Wang Zu-bin Chen Zheng-pu Cheng Wei-feng Luo Yi Yang Hao zhang En-lai Zha Yu-lie Gong Yu Zheng Chang-sheng Jiang Sheng-sheng zhang Xue Niu Hui zhang li-sha Hu Gui-lin Zhu Wen-hao Xu Zhao-xuan Niu li Yang center for Hydrogeology and Environmental geology Survey China Geological SurveyMinistry of Natural ResourcesBaoding 071051China institute of Hydrogeology and Environmental geology Chinese Academy of Geological SciencesChina Geological SurveyShijiazhuang 050061China Department of Natural resources of Qinghai Province Xining 810001China institute of exploration Techniques Chinese Academy of Geological SciencesChina Geological SurveyLangfang 065000China Department of Hydrogeology and Environmental geology China Geological SurveyMinistry of Natural ResourcesBeijing 100037China Chinese academy of Geological sciences China Geological SurveyBeijing 100037China beijing institute of exploration Engineering China Geological SurveyMinistry of Natural ResourcesBeijing 100083China institute of Geomechanics Chinese Academy of Geological SciencesChina Geological SurveyBeijing 100081China institute of Geophysical and Geochemical exploration Chinese Academy of Geological SciencesChina Geological SurveyLangfang 065000China institute of exploration Technology Chinese Academy of Geological SciencesChina Geological SurveyChengdu 611734China Geoscience Documentation center China Geological SurveyMinistry of Natural ResourcesBeijing 100083China Jilin University Changchun 130012China Oil and Gas Survey China Geological SurveyMinistry of Natural ResourcesBeijing 100083China guangzhou institute of Energy Conversion Chinese Academy of SciencesGuangzhou 510640China institute of geophysics China Earthquake AdministrationBeijing 100081China institute of the Hydrogeology and Engineering geology of Qinghai Xining 810008China

Hot dry rock(HDR)is a kind of clean energy with significant *** the 1970s,the United States,Japan,France,Australia,and other countries have attempted to conduct several HDR development research projects to extract thermal energy by breaking through key ***,up to now,the development of HDR is still in the research,development,and demonstration *** HDR {3. borehole(with 23.℃ at a depth of 3.05 m)was drilled into Triassic granite in the Gonghe basin in northwest china in ***,china Geological Survey(CGS)launched the HDR resources {3. and production demonstration project in *** three years of efforts,a sequence of significant technological breakthroughs have been made,including the genetic model of deep heat sources,directional drilling and well completion in high-temperature hard rock,large-scale reservoir stimulation,reservoir characterization,and productivity evaluation,reservoir connectivity and flow circulation,efficient thermoelectric conversion,monitoring,and geological risk assessment,*** the whole-process technological system for HDR {3. and production has been preliminarily established *** first power generation test was completed in November *** results of this project will provide scientific support for HDR development and utilization in the future.

关键词： Hot dry rock Directional drilling Reservoir stimulation Microseismic monitoring Organic Rankine cycle(ORC) Power generation test Energy geological survey engineering Gonghe basin Qinghai Province china

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