摘要
本文以华北地台北缘中段的构造演化为主线，论述了地质构造的成矿控矿作周。研究认为前燕山期古亚洲域构造演化阶段，华北地台北缘作为华北板块陆缘活动带形成了多条东西向的韧性剪切变形变质带。燕山期濒太平洋构造域的叠加、改造使华北板块成为中、新生代强烈活动区。地慢热柱演化的三级单元—幔枝构造控制的构造变形—岩浆活动—变质作用共同控制着冀北地区的金、银多金属矿床的成矿作用。
Based on the structural evolution in the central part of north margin of North ChinaPlatform, this paper discussed the mineralization during geological or structural evolution. It isconsidered that, as a marginal active zone of North China Platform, many eastwesten extendedductile shearing metamorphic belts were formed on the north margin of North China Platform inthe evolutionary pened of paleao-Asiatic tectonic domain before the Yanshanian movement. Thesuperimposition of Yanshanian Marginal-Pacific tectonic domain made the North China Platformbecome an intensively active block during mesozoic and Cenozoic era. The structural deformation,magmatism, and metamorphism controlled by the third class structural unit (mantle breach structure) of evolution for mantle plume dominated the mineralization of gold, silver and polymetallicdeposits.
基金
"八.五"地矿部地质找矿科技攻关项目
关键词
构造演化
地幔热柱
成矿系列
华北地台
控矿
Structural evolution, mantle plume, metallogenic series, Northern margin of north China Platform
