胶东莱阳和臧家庄盆地金矿成矿及找矿预测

Mineralization and ore prospecting of gold deposit in Laiyang and Zangjiazhuang basin of Jiaodong

胶东莱阳和臧家庄盆地广泛发育层间滑动断层,它控制了2种不同的金矿类型:层间滑动角砾岩型(蓬家夼式)和层间滑动微细浸染型(杜家崖式)。通过对盆地金矿成矿条件分析,认为盆地与胶北隆起区有相同的成矿条件,金矿在围岩蚀变、矿石矿物成分、结构构造、矿化阶段等方面具有相似的特点,但由于赋矿断裂性质的不同,在矿体产状、矿石类型方面存在较大差异。根据盆地金矿成矿规律和找矿标志划分出牧牛山、栖霞连家庄、莱阳市江旺庄—徐格庄、平度市灰埠—唐田、西林、栖霞—松山、金山—中桥7处找矿远景区。

Interlayergliding faults are well developed in Laiyang and Zangjiazhuang basin,Jiaodong, the faults controlled the interlayergliding breccia type gold deposits (Pengjiakuang type) and interlayer gliding microfine disseminated type gold deposits (Dujiaya type). There are same metallogenic conditions in basin and Jiaobei upwelling area by the analysis of metallogenic conditions of gold deposits in basin. The wallrock alteration, composition of ore, texture and structure and stage of mineralization are similar among the different gold deposits, but the occurrence of ore body and ore type is in different condition because the host fault is different. Muniushan, Lianjiazhuang of Qixia, Jiangwangzhuang to Xugezhuang of Laiyang, Huibu to Tangtian of Pingdu, Xilin, Qixia to Songshan, Jinshan to Zhongqiao gold prospective area are put forward according to the metallogenic rule and criteria for ore prospecting.