内蒙古黄河吐西铜矿区地质特征及找矿远景_李小永.pdf

第32卷 第4 期 　　　 吉 林 地 质 　 Vol.32 No.4 2013年12月 JILIN GEOLOGY Dec. 2013 天津华北地质勘查局，天津　300170 P618.41 A Geological features and prospecting potential of Huanghetuxi copper mining area in Inner Mongolia LI Xiao-yong, ZHAO Ying-fu Tianjin North China Geological Exploration Bureau, Tianjin 300170, China Abstract: Huanghetuxi copper multi-metal deposit which is located in the north of Jarub Banner in Tongliao of Inner Mongolia, in mid-south section of polymetallic metallogenic belt of Greater Khingan Mountains. In recent years, the author participated in mineral prospecting work in the mining area, preliminary mastered the characteristics of geology, geophysics and geochemistry, and found several mineralization alteration zone and copper ore bodies. The author considers that the ore-forming conditions and prospecting potential of this area are perfect. Key words: Huanghetuxi; copper deposit; geological feature; prospecting potential 上段和上侏罗统满克头鄂博组及第四系（图 1）。 　　下二叠统大石寨组中段大面积出露于矿区，为 　　黄河吐西铜多金属矿区大地构造上处于前中生 一套海相中性火山岩—碎屑岩建造，岩性主要为 代古亚洲构造域和中、新生代滨太平洋构造域交 灰黑色英安质晶屑凝灰岩及蚀变安山岩，其地层倾 接、重迭部位，所处大地构造单元，按槽台理论， 向南东，倾角 55 °～ 60 °。下二叠统大石寨组上 属于内蒙古中部地槽褶皱系（Ⅰ级）—苏尼特右旗 段大面积出露于矿区南东部，岩性主要为灰绿色蚀 晚华力西地槽褶皱带（Ⅱ级）—哲—林西复向斜（Ⅲ 变辉石安山岩及蚀变安山岩，其地层倾向南东，倾 级）北东段，其构造线方向为北东向，按板块构造 角 55 °～ 65 °。上侏罗统满克头鄂博组主要分布 理论，本区处于晚古生代岛弧及弧后、弧间盆地环 于矿区北部，零星出露，为一套