辽宁苇子沟地区金铜多金属矿成矿机制及找矿方向  

Metallogenic Mechanism and Prospecting Direction of Gold-Copper Polymetallic Deposits in Weizigou Area,Liaoning Province

作　　者：张磊 佟宇 杨振东 白云龙 刘幸 赵永涛 ZHANG Lei TONG Yu YANG Zhendong BAI Yunlong LIU Xing ZHAO Yongtao(Liaoning Provincial Bureau of Nonferrous Geological Team 109, Chaoyang 122000, Liaoning, China)

机构地区：[1]辽宁省有色地质局109队,辽宁朝阳122000

出　　处：《黄金科学技术》2017年第4期10-17,共8页Gold Science and Technology

摘　　要：苇子沟地区金铜多金属矿主要受闪长岩体控制,具有其自身的独特性。区域上金、铜、铅、锌、银、钼等元素在地层中的高背景值、矿区内矿体受逆冲断层控制、各金属元素地球化学土壤异常值的分带性等,皆为矿区金铜多金属矿体形成的主要因素。利用幔枝构造理论对矿床地质特征及诸多因素进行综合研究,认为苇子沟金铜多金属矿属于断裂—矽卡岩型矿床。NE向逆冲断层的形成是建平—阜新幔枝构造所造成,NE向逆冲断层为幔枝构造的主次级拆离带,为苇子沟地区的导矿、容矿构造,而更次级的拆离带为容矿、控矿构造。通过归纳区内成矿与嘀答水闪长岩体、围岩及NE向逆断层的关系,总结了成矿规律,并探讨了该区进一步找矿方向。The gold-copper polymetallic ore in the Weizigou area is mainly controlled by diorite rock and it has own unique characteristics,such as high background values of gold, copper, lead, zinc, silver and molybdenum in the formation,and orebody controlled by thrust fault,and zoning of soil abnormalities of metal elements geochemical,which are main factors of gold and copper polymetallic orebody forming in the mining area.Based on the research of geological characteristics and many factors of the deposit by using the mantle branch structure theory,it is believed that Weizigou gold-copper polymetallic deposit belongs to fault-skarn type deposit.The formation of the NW-trending thrust is caused by the Jianping-Fuxin mantle branch structure,and NE-tending fault is the main secondary detachment zone of the mantle structure,which is the ore-bearing and ore-controlling structure more secondary detachment zone for the ore,ore structure.Through summarizing the relationship between mineralization and trapped water diorite,surrounding rock and northeast trending fault,this paper summarize the metallogenic regularity and discuss the prospecting direction of gold-copper polymetallic deposits in Weizigou area.

关 键 词：幔枝构造 成矿机制 滴答水背斜 拆离滑脱层 脆韧性剪切带 苇子沟地区 辽宁省 

分 类 号：P618.2[天文地球—矿床学]