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吉中- 延边地区燕山期岩浆作用与矿床成矿系列研究
Received:September 25, 2019  Revised:December 11, 2019  点此下载全文
Cite This Paper:ZHAO Huawei,LI Dehong,ZANG Xingyun,PENG Yujing,MA Jing.2020.A study of magmatism and ore deposit series of Yanshanian magmatism in the central Jilin- Yanbian area[J].Acta Geologica Sinica,94(1):241-254
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Author NameAffiliationE-mail
ZHAO Huawei 1) Institute of Geological Survey of JilinProvince, Changchun, 130102 408871463@qq.com 
LI Dehong 1) Institute of Geological Survey of JilinProvince, Changchun, 130102  
ZANG Xingyun 1) Institute of Geological Survey of JilinProvince, Changchun, 130102 zangxingyun01@163.com 
PENG Yujing 2) Institute of Regional Geological Survey of Jilin Province, Changchun, 130061  
MA Jing 1) Institute of Geological Survey of JilinProvince, Changchun, 130102  
基金项目:本文为中国地质调查局中国矿产地质志项目(编号DD20190379)资助成果。
中文摘要:运用矿床的成矿系列理论,以构造岩浆演化为基础,对吉中- 延边成矿带与燕山期岩浆作用有关的矿床成矿规律进行了分析总结。研究表明,受古太平洋板块俯冲方向、速度的制约,吉中—延边地区燕山期构造岩浆活动复杂,总体上可分为5次成岩成矿事件:① 晚三叠世初基性超基性岩侵入,形成红旗岭铜镍矿床等岩浆型矿床;② 晚三叠世—早侏罗世初,吉中地区高钾钙碱性岩浆活动,形成兰家金矿床等岩浆热液型矿床,延边地区中低钾钙碱性—高钾钙碱性岩浆活动,形成前山金矿床等火山- 潜火山岩型矿床;③ 早侏罗世末—中侏罗世初,富铝酸性岩浆活动,形成大黑山钼矿床等斑岩型钼矿床;④ 中侏罗世末—晚侏罗世初,研究区以抬升剥蚀为主,成岩成矿作用较弱;⑤ 晚侏罗世末—早白垩世,吉中地区高钾钙碱性岩浆活动,形成二道甸子金矿床等岩浆热液型矿床,延边地区中低钾钙碱性—高钾钙碱性岩浆活动,形成小西南岔金铜矿床等火山- 斑岩型矿床。在建立吉中—延边地区与燕山期岩浆作用有关的矿床成矿系列的基础上,进一步划分为6个矿床成矿亚系列,各亚系列在时间、空间上既有联系,又有区别,显示了成矿作用的复杂性。
中文关键词:成矿系列  燕山期  岩浆作用  吉中- 延边成矿带
 
A study of magmatism and ore deposit series of Yanshanian magmatism in the central Jilin- Yanbian area
Abstract:The metallogenic regularity of the central Jilin- Yanbian metallogenic belt related to Yanshanian magmatism were analyzed and summarized based on the study of tectonic- magmatic evolution and ore deposit metallogenic series theory. The study shows that due to the subduction direction and velocity of the ancient Pacific plate, the complex Yanshanian tectonic- magmatic activity in the central Jilin- Yanbian area can be divided into five diagenetic and mineralizing events: (1) the late Triassic intrusion of mafic- ultramafic rocks that led to the formation of magmatic deposits such as Hongqiling copper- nickel deposit; (2) the late Triassic to early Jurassic high- potassium calcium- alkali magmatic activity in the Jizhong area and the formation of magmatic hydrothermal deposits such as the Lanjia Gold deposit, and the low potassium calcium alkali- high potassium calcium alkali magmatic activities in Yanbian resulting in the formation of volcanic- subvolcanic rock type deposits such as Qianshan gold deposit; (3) the early Jurassic to the middle Jurassic aluminum- rich acidic magma activity and the formation of porphyry molybdenum deposits such as Daheishan molybdenum deposit; (4) the middle Jurassic to late Jurassic was marked by uplift and erosion in the research area resulting in weak diagenesis and mineralization; (5) the late Jurassic to the early Cretaceous high- potassium calcium- alkali magmatic activity in the Jizhong area, and the formation of magmatic hydrothermal deposits such as the Erdaodianzi gold deposit; low- potassium calcium- alkali and high- potassium- calcium- alkali magmatic activity in the Yanbian leading to formation of volcano- porphyry deposits such as the Xiaoxinancha gold- copper deposit. Based on the establishment of the ore- forming series of magmatic processes during the Yanshanian period in the Jizhong- Yanbian area, they are further divided into 6metallogenic subseries. Despite geospatial and temporal differenes, the subseries are related indicating the complexity of the mineralization process.
keywords:metallogenic series  Yanshanian period  magmatism  central Jilin- Yanbian metallogenic belt
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