焦家断裂带紫罗姬家以南的延伸问题探讨

Discussion on Extension of Jiaojia Fault Zone in South of Ziluojijia Village

摘要:

焦家断裂带是胶西北地区三大著名的金成矿带之一，一般认为焦家断裂带为龙（口）莱（州）断裂带南段的高家庄子紫罗姬家段。根据近几年的研究成果，认为焦家断裂带在紫罗姬家以南，沿195°～200°方位延伸至紫罗綦家与黄家之间分为3支：第一分支沿紫罗綦家—赵官庄—前单家—张家埠至曹家埠村北；第二分支（主断裂带）沿紫罗綦家村东南—大尹家—西尹—西罗台村南至曹家埠村南；第三分支自紫罗綦家与黄家村之间向南延伸至史家村西之后，再向南去向不明，推测逐渐尖灭的可能性较大。

Abstract:

Jiaojia fault zone is one of three well-known gold metallogenic belts in northwestern Jiaodong area. It is generally considered as Gaojiazhuangzi-Ziluojijia section in the southern part of Longkou-Laizhou fault belt. According to the research results in recent years, it is considered that Jiaojia fault zone extends to the south of Ziluojijia along the orientation of 195° ~ 200°, whereas it is divided into three branches between Ziluoqijia and Huangjia village. The first branch passes through Ziluoqijia, Zhaoguanzhuang, Qiandanjia, Zhangjiabu and the north of Caojiabu. The second one, as the main fault zone, crosses along the southeast of Ziluoqijia, Dayinjia, Xiyin, south of Xiluotai village, till to the south of Caojiabu. The third starts from between Ziluoqijia and Huangjia village, extending southwards to the west of Shijia village. Then the track of Jiaojia fault zone becomes unclear across through farther south area. It is regarded that gradual pinchout is possible.