摘要
研究区在北宽扎省和南宽扎省(宽扎河两岸)cerca地区,在大地构造上位于非洲地台,是Cassanje拗陷与Cassai地盾的结合部位,成矿区带属于恩达拉坦多(断块)Fe-Mn-Cu-Ni-Au-Ag成矿带,成矿地质条件优越。在分析北宽扎省和南宽扎省(宽扎河两岸)cerca地区铁锰矿成矿地质背景、矿体地质特征的基础上,据现有钻探背景数据推测潜在铁锰资源量可达200~500万t。该地区以断裂构造为主,主要为一号南北向深大断裂和二号东西向深大断裂。两断裂在恩达拉坦多附近交汇,在此处具有典型环形构造和山字型构造的特征,且有多期活动的特点,沿断裂发育强烈的挤压破碎和糜棱岩化,具明显的揉皱变形,以右旋动为主;它们控制着区域变质岩,岩浆岩及金属成矿带的分布[1]。
The research area is located in Cerca District of Northern and Southern Kwanza provinces(on both sides of the Kwanza River),in view of earth tectonic,this area is located in Africa Platform,which is the binding site of Cassanje Depression and Cassai Shield,Metallogenic belt belongs to Ndalatando(fault block)Fe-Mn-Cu-Ni-Au-Ag metallogenic belt,with superior metallogenic geology.On the basis of analysis of geological background of iron-manganese ore deposit,ore deposit geological feature of Cerca Area in Northern and Southern Kwanza Provinces(on both sides of the Kwanza River),and based on the existing drilling background data,it is predicated that Ferro-manganese resources shall be 2~5 million tons.And this area is mainly fault block tectonic,which mainly include No.1 North-South Deep Fault and No.2 East-West Deep Fault.And these two blocks shall intersected at vicinity of N’dalatando,and this area has the characteristic of typical ring structure and mountain type structure,and has the characteristics of multi-period activities,along the fractures developed strongly by extrusion and mylonitization,they are obviously crumpled deformation,mainly with right rotation,they control distribution of regional metamorphite,magmatic rock and metal metallogenic belt.
作者
张国杰
王晗
李建军
田大鹏
ZHANG Guojie;WANG Han;LI Jianjun;TIAN Dapeng(Shen Kan Engineering and Technology Corporation,MCC,Shenyang 110000,China)
出处
《矿业工程》
CAS
2021年第2期1-5,10,共6页
Mining Engineering
关键词
安哥拉
锰矿
勘探
Angola
manganese ore
exploration
