华北地台北缘中段金矿控矿因素探讨

A discussion on ore-controlling factors of gold deposits in middle section of north rim of Northern China platform

在中生代华北与华南的碰撞过程中,华北克拉通北缘再次活化造山,伴随强烈的岩浆活动和成矿作用,造就了华北地台北缘重要的金成矿带,笔者通过多年该区找金的实践和对金矿控矿因素的分析认为,金的成矿物质来源于绿岩地体,并在燕山期构造-岩浆活动中迁移、富集成矿,并提出了找矿方向。

In the process of the collision between Northern China platform and Southern China platform in Mesozoic,the north rim of North China Craton was reactivated to be orogenic,and the important gold metal-logenic belt in north rim of North China platform was thus formed under influence of intensive magmatic ac-tivities and mineralization.Through the years of gold prospecting practicein this area and the analysis on ore-controlling factors of gold deposits,the author believed that the greenstone terrain provided the metallogenic materials of gold which migrated and enriched to form the deposits during Yanshanian tectonic magmatic ac-tivity.At last,the author put forward the prospecting direction.