摘要
赵家湾—欧阳山地区位于阳新岩体的西南缘,目前已发现两个矽卡岩型铜矿床,主要产于阳新岩体主接触带或围岩旁侧的大理岩捕掳体内,控矿地层主要为上石炭统黄龙组和下二叠统栖霞组碳酸盐岩地层。区内NW向断裂和褶皱构造分别控制着阳新岩体的边界和地层的展布,主接触带构造、捕掳体构造和大理岩层间破碎带进一步控制着矿体的具体产出部位和形态。文章在总结典型矿床地质特征的基础上,结合区域成矿作用,分析了阳新岩体深部岩浆岩演化和浅部侵入成矿过程,讨论了岩浆侵位与矿体组合类型之间的关系,提出了以“带”找“体”或以“体”找“带”的缺位找矿思路,并指出下一步的找矿方向。
Zhaojiawan-Ouyangshan area is located in the southwest margin of Yangxin rock mass,where two skarn copper deposits have been discovered.These deposits mainly occur in the main contact zone of Yangxin rock mass or in the marble xenoliths.The carbonate rocks of Huanglong Formation in Middle Carboniferous and Qixia Formation in Lower Permian are their main ore-controlling strata.The boundary of the Yangxin rock mass and the distribution of the strata are controlled by the NW-striking faults and fold structures in the area.The specific output position and of the ore body shape are further controlled by the main contact zone structure,the xenolith structure and the marble interlayer fracture zone.Based on the analysis of the geological characteristics of known deposits and combined with regional mineralization,this paper analyzes the evolution of deep magmatic rocks and the process of shallow intrusion and mineralization in Yangxin rock mass,discusses the relationship between magmatic emplacement and ore body combination types,and puts forward the idea of finding‘body’by‘belt’or finding‘belt’by‘body’,and points out the next prospecting direction.
作者
余国飞
蔡恒安
尚世超
沈军
张柳
杨栩玥
宋玉龙
魏克涛
YU Guofei;CAI Hengan;SHANG Shichao;SHEN Jun;ZHANG Liu;YANG Xuyue;SONG Yulong(The First Geological Brigade of Hubei Geological Bureau,Daye 435100,Hubei,China)
出处
《矿产与地质》
2023年第2期209-219,共11页
Mineral Resources and Geology
基金
湖北省地质局“鄂东南矿集区战略性矿产深部找矿理论与技术方法应用创新”(编号:KJ2022-15)及“湖北省综合性地质区划(鄂东南片)”(编号KCDZ2022-02)项目共同资助。
关键词
阳新岩体
矽卡岩型铜矿
矿床地质特征
成矿规律
岩浆演化
成矿作用
找矿方向
Yangxin rock mass
skarn type copper deposit
geological characteristics of deposit
metallogenic regularity
magmatic evolution
mineralization
prospecting direction
