The paper introduces the steps and methods of multi-approach, multi-level exploration of buried faults in thick Quaternary sediment regions by taking the test exploration of the Yinchuan active fault as example. Based...The paper introduces the steps and methods of multi-approach, multi-level exploration of buried faults in thick Quaternary sediment regions by taking the test exploration of the Yinchuan active fault as example. Based on the comprehensive analyses of previous data, we choose the Xinqushao Village of Xingqing District of Yinchuan City as the test site for the comprehensive exploration. Firstly, we adopted shallow seismic investigation with group intervals of 10m, 5m and lm to gradually trace layer by layer the master fault of the Yinchuan buried fault from a deep depth to a shallow depth where drilling could be used. Then, with composite geological profile drilling, we determined the precise location and dip angle of the fault. The drilling show the buried depth of the upper offset point is 8.3m. Finally, large-scale trenching revealed that the actual buried depth of the upper offset point of the fault is 1.5m from the ground surface and there are paleoearthquake events of 5 stages. Combined with the preliminary result of corresponding sample age, we conclude the Yinchuan buried fault is a mid to late Holocene active fault.展开更多
Based on the specific concept of whole-region comprehensive land consolidation and the development history of land consolidation in China,the internal relationship between rural revitalization strategy and whole-regio...Based on the specific concept of whole-region comprehensive land consolidation and the development history of land consolidation in China,the internal relationship between rural revitalization strategy and whole-region comprehensive land consolidation is clarified from the perspective of historical development,and the problems faced by whole-region comprehensive land consolidation,such as rural"hollowing out",weak linkage between execution departments and neglect of ecological restoration,are deeply analyzed.Furthermore,some new paths for whole-region land consolidation are put forward,such as strengthening the top-level system design,handling the relationship between stock and increment,evaluating the potential of rural land consolidation,coordinating the win-win cooperation between middle-level executive departments,encouraging the innovation at the bottom and enhancing the comprehensive management of ecological environment.展开更多
Jiama,with more than 11 Mt of copper metal,is the largest porphyry-skarn copper system in the Gangdese metallogenic belt,Tibet,China,creating ideal conditions for deciphering the origin of porphyry ores in a collision...Jiama,with more than 11 Mt of copper metal,is the largest porphyry-skarn copper system in the Gangdese metallogenic belt,Tibet,China,creating ideal conditions for deciphering the origin of porphyry ores in a collision setting.Despite massive studies of the geology,chronology,petrogenesis,and ore-related fluids and their sources in Jiama,there is a lack of systematic summaries and reviews of this system.In contrast to traditional porphyry copper systems in a subduction setting,recent studies and exploration suggest that the Jiama deposit includes porphyry-type Mo-Cu,skarn-type Cu polymetallic,vein-type Au and manto orebodies.This paper reviews the latest studies on the geology,chronology,petrogenesis,fluid inclusions,and isotopic geochemistry(hydrogen,oxygen,sulfur,and lead)of the Jiama deposit.Accordingly,a multi-center complex mineralization model was constructed,indicating that multi-phase intrusions from the same magma reservoir can form multiple hydrothermal centers.These centers are mutually independent and form various orebodies or are superimposed on each other and form thick,high-grade orebodies.Finally,a new comprehensive exploration model was established for the Jiama porphyry copper system.Both models established in this study help to refine the theories on continental-collision metallogeny and porphyry copper systems.展开更多
The fusion of digital technology and education has ushered in an era of intelligent educational environment.The course of Political Economy in colleges and universities not only imparts economic knowledge and cultivat...The fusion of digital technology and education has ushered in an era of intelligent educational environment.The course of Political Economy in colleges and universities not only imparts economic knowledge and cultivates financial quotient,but also bears the important task of improving students ideological and moral character.It is worth exploring how to effectively use digital technology to integrate ideological and political education into political economy more accurately.On the basis of building the ideological and political education system of political economy course,this paper explores the practical path of ideological and political education in the era of digital intelligence from three aspects:"before class","during class"and"after class".展开更多
基金The research was jointly sponsored by the National Development and Reform Commission of China under the project of"Experimental Exploration of Active Fault in Urban Area"(20041138)by National Natural Science Foundation of China (40234040)
文摘The paper introduces the steps and methods of multi-approach, multi-level exploration of buried faults in thick Quaternary sediment regions by taking the test exploration of the Yinchuan active fault as example. Based on the comprehensive analyses of previous data, we choose the Xinqushao Village of Xingqing District of Yinchuan City as the test site for the comprehensive exploration. Firstly, we adopted shallow seismic investigation with group intervals of 10m, 5m and lm to gradually trace layer by layer the master fault of the Yinchuan buried fault from a deep depth to a shallow depth where drilling could be used. Then, with composite geological profile drilling, we determined the precise location and dip angle of the fault. The drilling show the buried depth of the upper offset point is 8.3m. Finally, large-scale trenching revealed that the actual buried depth of the upper offset point of the fault is 1.5m from the ground surface and there are paleoearthquake events of 5 stages. Combined with the preliminary result of corresponding sample age, we conclude the Yinchuan buried fault is a mid to late Holocene active fault.
基金Postgraduate Innovation Fund of Yunnan University of Finance and Economics(2022YUFEYC100)Scientific Research Fund Project of Yunnan Provincial Education Department(2021J0591).
文摘Based on the specific concept of whole-region comprehensive land consolidation and the development history of land consolidation in China,the internal relationship between rural revitalization strategy and whole-region comprehensive land consolidation is clarified from the perspective of historical development,and the problems faced by whole-region comprehensive land consolidation,such as rural"hollowing out",weak linkage between execution departments and neglect of ecological restoration,are deeply analyzed.Furthermore,some new paths for whole-region land consolidation are put forward,such as strengthening the top-level system design,handling the relationship between stock and increment,evaluating the potential of rural land consolidation,coordinating the win-win cooperation between middle-level executive departments,encouraging the innovation at the bottom and enhancing the comprehensive management of ecological environment.
基金supported by the National Key Research and Development Program of China (2022YFC2905001)the National Natural Science Foundation of China (42272093,42230813)+1 种基金China Scholarship Council projectthe Geological Survey project (DD20230054)
文摘Jiama,with more than 11 Mt of copper metal,is the largest porphyry-skarn copper system in the Gangdese metallogenic belt,Tibet,China,creating ideal conditions for deciphering the origin of porphyry ores in a collision setting.Despite massive studies of the geology,chronology,petrogenesis,and ore-related fluids and their sources in Jiama,there is a lack of systematic summaries and reviews of this system.In contrast to traditional porphyry copper systems in a subduction setting,recent studies and exploration suggest that the Jiama deposit includes porphyry-type Mo-Cu,skarn-type Cu polymetallic,vein-type Au and manto orebodies.This paper reviews the latest studies on the geology,chronology,petrogenesis,fluid inclusions,and isotopic geochemistry(hydrogen,oxygen,sulfur,and lead)of the Jiama deposit.Accordingly,a multi-center complex mineralization model was constructed,indicating that multi-phase intrusions from the same magma reservoir can form multiple hydrothermal centers.These centers are mutually independent and form various orebodies or are superimposed on each other and form thick,high-grade orebodies.Finally,a new comprehensive exploration model was established for the Jiama porphyry copper system.Both models established in this study help to refine the theories on continental-collision metallogeny and porphyry copper systems.
基金Quality Engineering and Teaching Reform Project of Zhaoqing University in 2022(zlgc202209)Education Research Project of Zhaoqing Education Development Research Institute in 2023(ZQJYY2023025).
文摘The fusion of digital technology and education has ushered in an era of intelligent educational environment.The course of Political Economy in colleges and universities not only imparts economic knowledge and cultivates financial quotient,but also bears the important task of improving students ideological and moral character.It is worth exploring how to effectively use digital technology to integrate ideological and political education into political economy more accurately.On the basis of building the ideological and political education system of political economy course,this paper explores the practical path of ideological and political education in the era of digital intelligence from three aspects:"before class","during class"and"after class".