摘要
笔者在本文中总结了北岔沟门银多金属矿田的断裂构造特征。矿田内的断裂构造可分为成矿前断裂、成矿期断裂及成矿后断裂,特殊的大地构造位置铸就了复杂的构造环境,不同期次的断裂对矿体的形成、改造起到了不同的作用。矿体主要赋存于D7-D5-D8及D2-D4-D8两个断裂构造活跃带内。成矿期断裂构造具有多个方向、多期多阶段、等距性等特点,形成了矿田内由高温到低温的不同矿种的矿床组合,组成了矿田内的矿化网络,具有低阻高极化特征。
The fault characteristics of in the Beichagoumen Ag-polymetallic ore field are summarized in this paper. The Fault evolution can be divided into three stages, including pre-mineralization period, mineralization period and post-mineralization period in this ore field, which have played different roles in the formation of ore bodies and modification. The special geotectonical location exhibits a complicated tectonic environment. The ore bodies mainly exist in two active faults. One fault is in the DT-DS-D8 zone, the other is in the D2-D4-D8 zone. The fault structure is of features in multi-direction, multi-phase, multi-stage and equidistanthe during the ore-forming stage. A series of ores formed with the temperature descend. They have the characteristics of low bloeking and high polarization, and compose mineralizition net in the ore field.
出处
《地质调查与研究》
2009年第1期48-53,共6页
Geological Survey and Research
基金
国家地质大调查项目:河北省王家窝铺-小窝铺一带银多金属矿资源调查评价(200210200038)
关键词
冀北
北岔沟门
银多金属矿
铅锌矿
控矿断裂构造
north Hebei Province
Beichagoumen
Ag-polymetallic deposit
Pb-Zn deposit
ore-control faultstructure
