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.