TECTONIC GEOCHEMISTRY OF FAULTS IN BANSHIGOU IRON DEPOSIT, BAISHAN CITY, JILIN PROVINCE
MU Hong-yu1, LIU Zheng-hong2, JIA Da-cheng1, LI Peng-chuan2, LU En-lan3
1. College of Geoexploration Science and Technology, Jilin University, Changchun 130026, China; 2. School of Earth Sciences, Jilin University, Changchun 130061, China; 3. Jilin Institute of No.4 Geological Survey, Tonghua 134001, Jilin Province, China
Abstract:The change rule of element migration in fault structures is one of the main concerns for tectonic geochemical study. The fault structure of Banshigou iron deposit in Baishan City, Jilin Province, is well developed. With survey on the No. 17 ore group from Banshigou iron deposit and typical reverse fault section in Zhaojiagou ore group, collecting tectonite and surrounding rock samples, analyzing major elements and trace elements, the distribution characteristics and migration patterns of elements in reverse fault are reflected by geochemistry section method, isocon analysis and characteristic element ratio. Based on the analysis, it is assumed that the major elements such as SiO2, Fe2O3, CaO and Na2O are depleted in reverse fault, while Al2O3 and K2O are concentrated, with enriched long ion radius trace elements like Rb and Sr, depleted minor ion radius Co, Cr, Ni. The ratios of characteristic elements K2O/Na2O, V/Cr and Rb/(Ni+Co) show high value and SiO2/Al2O3,(Fe2O3+CaO+MgO)/Al2O3 low value. The tectonic geochemical characteristics above can judge the existence of fault structure, and provide basis for tectonic geochemical study and Banshigou iron deposit prospecting.
穆宏玉, 刘正宏, 贾大成, 李鹏川, 路恩兰. 吉林省白山市板石沟铁矿断裂构造地球化学特征[J]. 地质与资源, 2017, 26(5): 479-488.
MU Hong-yu, LIU Zheng-hong, JIA Da-cheng, LI Peng-chuan, LU En-lan. TECTONIC GEOCHEMISTRY OF FAULTS IN BANSHIGOU IRON DEPOSIT, BAISHAN CITY, JILIN PROVINCE. GEOLOGY AND RESOURCES, 2017, 26(5): 479-488.