胶东地区玲珑金矿和焦家金矿成矿控矿构造对比研究

摘要

Linglong gold deposit and Jiaojia gold deposit are large gold fields in Jiaodong region.In addition,the Linglong gold field is given priority to with quartz vein type gold deposits and the Jiaojia gold field presents altered rock type gold deposit.Based on a brief overview of regional tectonic background,the two giant ore deposits metallogenic structure were analyzed with emphasis on discussing metallogenic ore-controlling role of Guojiadian mantle branch structure to the two types of ore deposit.The results demonstrated that peripheral detachment beltthe of Guojiadian mantle branch structure developed a series of ductile-brittle shear zone controlling distribution of the two types of ore deposits,while the mineralization type was controlled by the location of the fracture structure and structural properties.Mantle branch structure theory reported that the Jiaodong gold ore-forming material came from the deep.On the basis of the theory,ore body distribution, extension and alteration features of the Linglong and Jiaojia mining area were investigated.Meanwhile,we analyzed the mineralization and speculated deep prospecting direction.%玲珑金矿和焦家金矿是胶东地区大型金矿田，玲珑金矿田以石英脉型金矿床为主，焦家金矿田以蚀变岩型金矿床为主。在简要概述区域构造背景基础上，分别对2个大型矿床的成矿构造进行了分析，着重探讨了郭家店幔枝构造对2类矿床的成矿控矿作用，郭家店幔枝构造外围拆离带发育的一系列韧—脆性剪切带控制着矿床的分布，而矿化类型受断裂性质及位置的控制。依据幔枝构造理论，胶东地区金矿成矿物质来源于深部，依据该理论，研究了玲珑和焦家矿区的矿体分布、延伸及蚀变特征，进行成矿作用分析并推测深部找矿方向。