Subduction and closing evolutionary mode in western Xar Moron suture zone

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Du, Xianli^1^2 ; Shan, Xuanlong^1^2 ; Yi, Jian^1^2 ; Wang, Jiuwen^3 ; Dai, Xiaojuan^1 ; Su, Siyuan^1^2^4 ; Lou, Hong^5 ; Feng, Xin^6 ; Liang, Ye^1^2 ; Zhang, Yunhe^7

College of Earth Sciences, Jilin University, Changchun

130061, China^1

Key Laboratory for Evolution of Past Life and Environment in Northeast Asia, Jilin University, Ministry of Education, Changchun

130061, China^2

Xinjiang Jinzheng Touzi Company, Urumqi

830000, China^3

Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Mineral, Shandong University of Science and Technology, Qingdao

266590, China^4

Exploration and Production Research Institute, Tarim Oilfield Company Limited, Korla

841000, China^5

Third Oil Extraction Plant of Daqing Oil Field Company Limited, Daqing

163000, China^6

Xinmin Oil Production Plant Branch, Jilin Oilfield Company, Songyuan

138000, China^7

关键词: Crustal structure;    Evolutionary mode;    Magma effect;    Paleo-Asian Ocean;    the Xar Moron suture;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/2/022064/pdf
DOI  :  10.1088/1755-1315/300/2/022064

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The Xar Moron suture zone is located on the suture of North China Craton and Siberian Craton, which is one of the research hotspots in the Geoscience. In this paper, the western section of the Xar Moron suture zone is taken as the research object. Based on geological and geodynamic analysis, the tectonic and evolution stages of the study area were divided, the evolution model of the subduction and closure of the Paleo-Asian Ocean in the study area, the collision of plates and plates is established. The results show that Xar Moron fault is a suture, and there are obvious differences between the crustal structures on both sides of the fault, outcrop volcanic rocks are distinguished by high potassium calcium alkaline series and their magmatic source is a mixture of crust source and mantle source. The study area is divided into four tectonic evolution stages, C2-P2, P2-P3, P3-T3 and After T3 stage. It is estimated that in the late Permian to early Triassic, Paleo-Asian Ocean has experienced the post-arc dilation, the arc-continent collision and the pre-arc accretion stage. It established the subduction and closing evolutionary mode of the Paleo-Asian Ocean in the Xar Moron suture zone, which provide a reference for the study of the dynamic mechanism of the formation of the fault zone.