Geochemical analysis of ore-orming conditions in Yanshiping area along the North section of the Sanjiang metallogenic belt
ZHENG Xiang-Guang1, LEI Qun-Ying1, LI Jing2, MAO Yi-Feng1, WANG Chen1, MENG Jun-Feng1
1. No.2 Comprehensive Geophysical Survey Party, Shaanxi Bureau of Geology and Mineral Resources, Xi'an 710016, China;
2. Geological Survey of Shaanxi, Xi'an 710014, China
Based on an analysis of elements association characteristics and anomalous element assemblage and a discussion on the basic geology of Yanshiping area, the authors have obtained the following new evidence for ore-forming geological background: There are big scale intermediate basic volcanic rocks in Yanshiping area, and there are some intermediate — acid intrusive rocks or vein rocks. Yanshiping fracture and Wenquanbinzhan fracture are deep fractures with rock-guiding and rock-control characteristics; NW-trending Chuduo-Chaqiong fracture is also rock-guiding and rock-control structure, and the ore-forming role of anticline structure is better than that of synclinal structure. According to the above conclusions, the authors hold that the Yanshiping mineralization is closely connected with intermediate basic volcanic rock and intermediate — acid intrusive rocks, and mesothermal and epithermal deposits and iron-copper polymetallic ore deposits are regarded as belonging to volcanic type and sedimentary- reworked type.
郑向光, 雷群英, 李静, 毛一峰, 王晨, 孟军锋. 三江北段雁石坪地区成矿地球化学条件分析[J]. 物探与化探, 2016, 40(5): 861-868.
ZHENG Xiang-Guang, LEI Qun-Ying, LI Jing, MAO Yi-Feng, WANG Chen, MENG Jun-Feng. Geochemical analysis of ore-orming conditions in Yanshiping area along the North section of the Sanjiang metallogenic belt. Geophysical and Geochemical Exploration, 2016, 40(5): 861-868.