DISCOVERY AND GEOLOGICAL SIGNIFICANCE OF THE LATE NEOPROTEROZOIC GRANITE IN HUANERKU, DAXINGANLING REGION
LIU Yu-wai1, DU Bing-ying1, ZHANG Tie-an1, ZHAO Ming-sheng2, ZHAO Yu-sheng1, LIU Yu-qi1, ZHEN Miao1, LUO Jia-xin1
1. Heilongjiang Institute of Regional Geological Survey, Harbin 150080, China; 2. College of Paleontology, Shenyang Normal University, Shenyang 110034, China
Abstract：The latest research shows that the assemblage of ophiolite is developed in Jifeng, Gaxian and Huanerku areas along the eastern part of Xinlin-Xiguituqi fault in Daxinganling Mountains. Based on the study, the LA-ICP-MS zircon U-Pb age of 557.2±2.2 Ma is obtained from the granite in the ophiolitic melange in Huanerku area, indicating it was formed in Neoproterozoic period. The rock is generally characterized by slightly poor alkali, weakly peraluminous calc-alkaline with indistinct negative Eu anomaly, enrichment of LREEs and Hf, Ba, Nd and U, and relative depletion of Th, Nb, Ta and Zr, belonging to weak peraluminous calc-alkaline I-type granite. Considering the existence of Neoproterozoic ocean basin in Xinlin-Jifeng area, it is concluded that the granite is possibly the product of ocean subduction.
刘宇崴, 杜兵盈, 张铁安, 赵明胜, 赵雨生, 刘宇奇, 甄淼, 罗佳欣. 大兴安岭环二库地区新元古代晚期花岗岩发现及其地质意义[J]. 地质与资源, 2017, 26(5): 453-459.
LIU Yu-wai, DU Bing-ying, ZHANG Tie-an, ZHAO Ming-sheng, ZHAO Yu-sheng, LIU Yu-qi, ZHEN Miao, LUO Jia-xin. DISCOVERY AND GEOLOGICAL SIGNIFICANCE OF THE LATE NEOPROTEROZOIC GRANITE IN HUANERKU, DAXINGANLING REGION. GEOLOGY AND RESOURCES, 2017, 26(5): 453-459.
2017, Vol. 26 
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