河北承德大庙杂岩体成矿规律研究及远景预测

Metallogenic regularity and prospective prediction of Damiao complex in Chengde,Hebei Province

大庙斜长杂岩体位于华北地台北缘,燕山台褶带与内蒙地轴的交接地带,属于台褶带边缘的断裂隆起区大庙穹断束(Ⅳ级)构造单元中,红石砬~大庙东西向深断裂在本区通过,控制着区内的岩浆活动,为本区铁、磷等矿床的生成提供了优越的运矿和储矿空间。截至2014年底全区累计探明储量8亿吨以上,已达大型铁矿规模。根据成矿规律并结合低缓地磁异常,推测深部仍有磁性体存在,预计本区铁矿储量可达10亿吨以上,矿床规模有望成为超大型钒钛磁铁矿床。

Damiao anorthosite complex is located in the northern margin of North China platform,the intersection of Yanshan platform fold belt and Inner Mongolia earth axis.It belongs to the damiaogong fault cluster (level IV) structural unit in the fault uplift area of the edge of platform fold belt.The hongshila Damiao East-West deep fault passes through this area and controls the magmatic activity in this area,which provides superior ore transportation and ore storage space for the formation of iron,phosphorus and other deposits in this area Between.By the end of 2014,the total proved reserves of the whole region were more than 800 million tons,reaching the scale of large-scale iron ore.According to the metallogenic law and the low and gentle geomagnetic anomalies,it is speculated that there are still magnetic bodies in the deep.It is estimated that the iron ore reserves in this area can reach more than 1 billion tons,and the deposit scale is expected to become a super large vanadium titanium magnetite deposit.