The Geological Characteristics And The Metallogenic Regularity Exploration Of Guocheng Gold Deposit

Jiaodong peninsula area is the main gold mineralzation area,and both of the resource reserves and the yield rank forefront of the country.The research level of this area is higller.The fracture zone-altered rock type gold deposit and gold deposit of quartz vein type are two basic gold deposit type in this area,and they always occurred along the main fault zone in this area.In recent years,a new gold depost has been definded because of the found of the gold ore belt in the margin of the Jiaolai Basin especially in the northeastst margin of Jiaolai Basin.This new type is interlayer glidding breccia type gold deposit.This dissertation is to research the metallogenic geological characteristics and metallogenic regularity and to discuss the ore forming model preliminary.Guocheng gold deposit is distributed tudui,east of tudui and shawang ore sections from west to east the stratums developed in the research area mainlv include of the jingshan formation of early proterozoic era,laiyang formation of mesozoie and the quaternary.The nlagmatic rocks in this area mainly are fine adamelite of late proterozoic.they sprad along the NE trending fault zone and invade jingshan formation.Vein rocks is wildly developed in this area,they are after syn-metallogenic stage dyke rocks and they always cut the orebody.The fault zone was secondary struetures of Tancheng-lujiang fault system.With the formlation of Jiaolai basin,The effects of regional tectonism resulted in a series of low-angle interlayer slip fault at northeastern margin of the basin in the Mesozoic.Ore bodies basiely Bedding distributed,which existed withen the fault zone. Gold mineralization strietlv was controlled by fault breecias alteration.The center of interlayer sliding was the center of gold mineralization.The mineralization degree gradually decreased from the center to the edge of the fault.So interlayer slip fault and breccias..ere maiin ore control factors of Guocheng gold deposit.