燕山北部崇礼-隆化-阜新构造带形变特征及其控矿作用

崇礼-隆化-阜新构造带是燕山北部重要的控岩控矿构造。晚华力西期-印支期,该构造带以韧性剪切变形为主,形成一系列近EW向断续分布的韧性剪切带。燕山期,该构造带以韧脆性-脆性断裂变形为主,在早期韧性剪切变形的基础上叠加一系列同方向的高角度压性-压扭性逆冲断裂。喜马拉雅期,该构造带仍有一定的继承性活动,以张扭性-扭性断裂活动为主。
崇礼-隆化-阜新构造带对金矿化分布有明显的制约作用。在空间上,该构造带控制了张家口-隆化-阜新金矿带及其中5个金矿化集中区的展布;在时间上,该构造带不同类型的形变伴有不同类型的金矿化。该构造带与NE向、NW向断裂带的复合部位是金矿成矿的有利部位. 

DEFORMATION FEATURES OF CHONGLI-LONGHUA-FUXIN STRUCTURAL ZONE AND ITS CONTROL OF MINERALIZATION

The Chongli-Longhua-Fuxin structural zone is of importance controlling magma intrusion and gold mineralization in the northern Yashan area.In late Variscan-Indosinian stage,it was dominated by ductile shearing and formed a series of discontinuous east-west trending ductile shear zones.In Ysashanian stage,it was characterized by ductile-brittle and brittle faulting and formed a series of east-west trending high-angle thrust faults superposed on the early mylonite zones.In Himalayan stage,fault activity succeeded.
The Chongli-Longhua-Fuxin structural zone has exerted a notable control over gold mineralization,such as the spatial distribution of Zhangjiakou-Longhua-Fuxin gold mineralization and the five gold concentrations.Temporally different types of deformation within the zone are accompanied by different types of gold mineralization.Its compounding with northeast and northwest trending faults is favorable for gold mineralization.