摘要
中亚成矿域中的斑岩型铜(钼金)矿,有别于滨太平洋区的斑岩铜矿,它们大部分是形成于大洋消亡之后,与A型俯冲或后碰撞阶段的构造岩浆作用有关,并非都形成于岛弧发展阶段,且常与浅成低温热液型金矿(产于陆相-亚陆相火山岩内)时间相随、空间相伴,两者属于一个统一的岩浆系统;浅部是浅成低温热液型金矿,深部是高温斑岩型铜(钼金)矿,其成矿特点表现出两者元素组合连续、过渡与转化,两者类型相随相伴。
The porphyry Cu （Mo,Au） deposits in Central Asia ore-forming area are different from porphyry Cu deposits occurred in Peri-Pacific area, for most of them formed after ocean extinction and were related to tectonic magmatism of A-type subduction or post-collision stage. Not did all the porphyry deposits form during the period of island-arc development. The porphyry Cu deposits often formed after the epithermal gold deposits＇ formation （occurred in continental facies-subeontinental facies volcanic rocks） and were associated with the gold deposits. The two kinds of deposits belong to an uniform magmatic system. Epithermal gold deposit occurred in shallow part, while the high temperature porphyry Cu （Mo, Au） deposit occurred in deep part, and the metallogenic characters represent continuity, transition and transformation of the elements contained in the two kinds of deposits. The porphyry Cu （Mo, Au） deposits are closely associated with the epithermaI gold deposits.
出处
《矿产与地质》
2008年第5期400-404,共5页
Mineral Resources and Geology
