云南勐海县曼蚌铁矿矿区外围找矿标志

THE PERIPHERAL PROSPECTING CRITERIA OF MANBENG FE OREFIELD IN MENGHAI,YUNNAN

勐海县曼蚌铁矿矿区外围主要出露新元古界澜沧群惠民组上下段,古生界石炭系下统南段组下段、中侏罗统花开左组上下段和第四系。以北东向褶皱构造为主,并发育南北向和东西向断裂构造,铁矿矿体赋存于吉量背斜两翼惠民组上段(Pt_(3)h^(2)),呈似层状产出。为海相火山-沉积变质型铁矿床。

There are mainly Neoproterozoic Lancang Group Humin Formation Upper and Lower Member,Palaeozoic Lower Carboniferous Nanduan Formation Lower Member,Middle Jurassic Huakaizuo Formation Upper and Lower Member and Quaternary strata.The main structures are NE fold,NS and EW faults.The Fe orebody is in Huimi Formation Upper Member(Pt_(3)h^(2))of Jiliang anticline limbs,stratoid,which is the marine volcanic-sedimentary metamorphic Fe deposit.