摘要
本文回顾了滇中地区前震旦纪铜铁矿找矿过程中的失败和成功实例,总结了找矿取得进展的关键在于领悟到它们的层控性并对各赋矿层在区域地层柱中的位置及控矿构造有所了解。以东川式铜矿床为重点,探讨了区内铜矿成矿时代由老到新的继承、发展过程,强调了昆阳群底部因民组红层作为古砂岩铜矿的矿源层、赋矿层及其逆断一底辟构造中控矿在找矿中的重要性。对东川矿区可能存在超大型铜矿床进行了理论分析和找矿工作方法的探讨。本文对区内铁矿的分布规律和找矿前景也作了概略的阐述。
The examples of failure and success experienced on the prospecting for the copper and iron deposit of the Presinian in Central Yunnan region are presently reviewed. The key, summed up the experience on ore-searching process, to get progress on each stage of prospecting xies on the realization of the strata-bound charactor of tkese deposits, the position of ore-bearing horizon in the rigional stratigraphic colum and the ore-control structure. To take the copper deposit of Dongc'luan type as a focal point, the author inquired into the process of inheritance and development of metal-logenetic epoch of the copper deposits from older to younger in this region, and stressed on importances of red betas, i.e., the Yingming Formation which is in basic part of the Kunyang Group, the ore source beds and ore-bearing beds of the ancient copper deposits of the sandstone type, on the importances of-thrust-diapire ore-controlling structure in ore-searching process. Theoretical analysis and prospecting works are presented to the Dong-chuan wine area which is predicted to have fair possibility of super-large copper deposit. Preliminary description is given to distribution rules and ore-searching prospects of iron deposit in this region.
出处
《云南地质》
1991年第3期323-355,共33页
Yunnan Geology
