摘要
安徽宣城麻姑山—荞麦山地区是长江中下游成矿带的重要组成部分,在该区已发现茶亭斑岩型铜金矿、荞麦山层控矽卡岩型铜硫钨多金属矿及魏墩热液充填型锌硫矿。通过总结近年来该地区地质勘查成果,结合区域地质背景和铜多金属矿地质特征,探讨该区铜多金属矿的矿化规律和找矿方向。该区重要控矿层位为石炭系黄龙组、船山组;重要控矿构造为次一级倒转背斜的倒转翼及泥盆系五通组与石炭系黄龙组、船山组接触面;与成矿有关的岩浆岩主要为燕山晚期花岗闪长斑岩。这些控矿因素可指明该区下一步找矿方向。
The Magushan-Qiaomaishan area in the city of Xuancheng is important part of the metallo- genic belt in the middle and lower Yangtze region, which, in recent years, has been discovered to host the porphyry Cu-Au deposit in Chating, the stratabound skarn Cu-S-W polymetallic deposit in the east of Qiaomaishan, and the hydrothermal filling Zn-S.deposit in Weidun. This paper summarizes the metallo- genic principles and ore-controlling factors of the＇copper polymetallic deposits in the area by analyzing the results of the geological surveys in recent years and, the regional geological background and the geological characteristics of the copper polymetallic deposits. It can be concluded that the main ore-controlling strata are the Carboniferous Huanglong and Chuanshan Formations; the main ore-controlling structure is the in- verted wing of the secondary inverted anticline and the interfaces between the Devonian Wutong Formation and the Carboniferous Huanglong and Chuanshan Formations; and the main metallogenic magmatic rock is the late Yanshanian granodiorite-porphyry （Gdp）. This study has provided the direction for the future ex- ploration in the area.
出处
《华东地质》
2017年第1期28-36,共9页
East China Geology
基金
中国地质调查局项目"安徽泾县-宣城地区矿产地质调查(项目编号:12120113069500)"资助
关键词
黄龙组
船山组
背斜倒转翼
花岗闪长斑岩
控矿因素
找矿方向
Huanglong Formation
Chuanshan Formation
inverted wing of the anticline
granodiorite porphyry （Odp）
ore-controlling factors
direction for exploration
