山东胶莱盆地东北缘前垂柳矿区金矿资源潜力分析

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山东胶莱盆地东北缘前垂柳矿区金矿资源潜力分析

2024-07-09 21:31| 来源: 网络整理| 查看: 265

The Qianchuiliu mining area of Muping in Yantai City is located in the northeast margin of Jiaolai Basin,Shandong Province.It shows good location and metallogenic condition with Liaoshang gold deposit (super large) on the west and Xilaokou gold deposit(large) and Xijingkou gold deposit(medium) on the east.However,there has been no breakthrough in ore prospecting in this area through geological work for many years,and the prospecting has fallen into confusion.In this paper,base on the introduction of the geological background of the Qianchuiliu mining area,we sorted out and summarized the geological,geophysical and geochemical data obtained in this area.Then based on the characteristics of the surrounding typical gold deposits and the main orebodies in each deposit,we summarized the gold metallogenic regularity and the metallogenic characteristics in this area.According to above studies,the reasons why the prospecting effect is not obvious in this area in the past are found and discussed.It is considered that there are some problems,including the selection of geophysical methods,excessive engineering spacing,too much attention to the industrial grade of surface samples,and lack of systematic understanding of mineralization.Furthermore,two possible prospecting ideas were proposed:Firstly,it is considered that the four gold mining areas,e.g.,Liaoshang,Qianchuiliu,Xilaokou and Xijingkou are controlled by the same NE-trending large fault zone from west to east,the inclination angle gradually changed from steep to gradual;Secondly,the above four mining areas are controlled by a large fault zone in the east-west direction,the inclination angle gradually changed from steep to gentle from north to south.Gold orebodies exists in the large fracture zone,the shallow orebody is characterized by steep dip,scattered and small scale.Whereas,the deep orebody mainly exists in the fault fracture zone from steep to slow,distinguished by large scale and stability.Notably,there is a large ore-free interval between shallow and deep ore bodies.Further analysis shows that in the Qianchuiliu mining area between Liaoshang and Xilaokou,although there are no industrial orebodies on the surface or shallow surface,a large-scale fracture zone has been found,which should be brought into the same metallogenic system as the surrounding gold deposits.No matter which model controls the ore deposits,in NE or near EW direction,it is inferred that there are a series of gold orebodies in Qianchuiliu mining area,which are relatively gently dipping and inclined to SE or S,and exist in the place from steep to gentle in the fracture zone.Therefore,the gold resource potential is between the Liaoshang and Xilaokou gold deposit,and it is concluded that there is a great prospecting potential.

Keywords: metallogenic regularity ; resource potential ; prospecting idea ; Qianchuiliu mining area ; northeast margin of Jiaolai Basin



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