招平断裂带上盘金矿床氢氧同位素地质特征  

H-O Isotopes of Gold Deposits in the Hanging Wall of Zhao-Ping Fault Belt

作　　者：周燕[1] 郑培玺[2] 王铁夫[1] 张延洁[1] 

机构地区：[1]吉林大学测试科学实验中心,长春130026 [2]吉林大学地球科学学院,长春130061

出　　处：《吉林大学学报（地球科学版）》2007年第4期668-671,共4页Journal of Jilin University：Earth Science Edition

基　　金：国家自然科学基金项目(40272051)

摘　　要：招平断裂是胶东招掖金矿带的主要控矿断裂,其上盘金矿床受NE向断裂构造控制,赋矿围岩为胶东群变质岩,金矿化以含金硫化物石英脉为主。研究表明,该区域金矿床H-O同位素组成为:δDH2O值为-100.15‰～-73.13‰,平均为-86.63‰;δ18OH2O值为4.78‰～10.12‰,平均为6.22‰,与下盘金矿床H-O同位素组成相同。显示出该地区成矿热液均以幔源为主,具有与招掖金矿带其它金矿类似的成矿热液系统。Zhao- Ping fault belt is the most important ore-controlling structure in Zhao- Ye gold belt in Jiaodong. The gold deposits that are located in the hanging wall of the Zhao - Ping fault belt are distributed mainly in the metamorphic rocks of Jiaodong Group. The ores are mainly of the auriferous quartz vein type hosted in NE trending fractures and faults. Wall-rock alterations are most potassic alteration, silicification, quartz-sericitization, pyritization and carbonatization. The δ^18O value of the quartz vein ranges from 4.78‰ to 10.12%0,and the average value is 6.22‰. The （δDH2O values of inclusion fluid vary from -100.15‰ to -73.13‰, and the average value is -86.63‰. The result shows that the ore hydrothermal fluid is area. mainly mantle derived, similar to the ore fluids in other deposits in the area.

关 键 词：招平断裂 H-O同位素 成矿热液 幔源流体 

分 类 号：P618.51[天文地球—矿床学]