摘要
黑色岩系的形成反映了环境的突变事件,构成了许多重要矿床的赋矿岩系.辽宁青城子地区许多岩组中均有石墨含量较高的岩层,可以认为这些石墨较高的岩石组合为黑色岩系.青城子地区含矿岩系中产有多处大中型金、银、铅、锌矿床,为一重要的金、银多金属矿化集中区.青城子地区的矿床形成与古元古代发生的多期火山喷发活动有关.与成矿关系密切的岩石为浊积岩成因.水下火山活动所释放的高含量的CO2有利于黑色岩系的形成,生物作用、变质作用对矿床的形成均起了重要的作用.在青城子地区还应当重视开展产在黑色岩系中其他矿种的找矿勘查工作.
The presenting of black shale series reflects abrupt environmental events,which formed many important ore hosting rock series.There are high graphite bearing layers in most of the rock associations in Qingchengzi area of Liaoning Province.The high graphite bearing rocks are regarded as black shale series.The Qingchengzi area,with several medium large scale gold,silver,lead and zinc deposits ocurred in the ore bearing rock series,is an important concentrated region for Au Ag multimetal mineralization.The forming of the deposits in the area is closely related to Paleoproterozoic volcanic eruptions.The ore forming rock series should be turbidite origin.The large amount of CO2 released from subaquitic volcanic activities is favorable for the forming of black shale series.Biologic and metamorphic processes have played important roles for the mineralization.During the prospecting in Qinggchengzi area,we should also pay attention to other minerals occurred in the black shale series.
出处
《地质与资源》
CAS
2002年第3期188-192,共5页
Geology and Resources
