摘要
Au、Ag、Pb、Zn、Cu、Co是辽东裂谷最主要的金属矿床 ,产于辽河群的不同层位。矿床成因至少可分沉积—变质热液成因、岩浆热液成因和接触交代成因三类。成矿受含矿层、构造、岩浆活动和变质作用控制。矿源层是成矿前提 ,构造—岩浆活动是成矿必要条件。构造—岩浆活动叠加改造的矿源层是最佳的成矿和找矿地区。
Liaodong rift system are characterized by the formation of Au, Ag, Pb, Zn, Cu and Co ore deposits, which located in different layers of Liaohe Group and dominate over other kinds of metallic ore deposits. The origin of these ore deposits can be divided into three categories at least: sedimentary-metamorphic origin, magmatic-hydrothermal origin and contact metasomatic origin. The formation of ore deposits is controlled by several factors as follow: primary ore-bearing strata, structures, magmatic activities and metamorphism. The existence of ore-bearing strata is the precondition for the formation of ore deposits. And structural and magmatic activities must be required in the course of formation of ore deposits. Ore-bearing strata reworked by structural and magmatic activities are the best places for the formation of ore deposits and for the ore prospecting.
出处
《前寒武纪研究进展》
2002年第3期240-245,共6页
Progress in Precambrian Research
基金
中国地质调查局"华北地台成矿规律和找矿方向综合研究项目"(编号 :2 0 0 110 2 0 0 0 38)
