胶西北焦家金矿田控矿构造分析  

Analysis on Ore-controlling Stucture of Jiaojia Gold Deposit in Northwestern Shandong

作　　者：张福祥[1] 牛树银[1] 刘成[1] 张晓飞[1] 王铮[1] 赵莎[2] 

机构地区：[1]石家庄经济学院,河北石家庄050031 [2]河北地质职工大学,河北石家庄050083

出　　处：《黄金科学技术》2012年第2期8-13,共6页Gold Science and Technology

基　　金：公益性行业科研专项经费项目"我国典型金属矿科学基地研究"(编号:200911007);国家自然科学基金"阜平幔枝构造轴部麻棚地区的成矿作用研究"(编号:40872137)联合资助

摘　　要：焦家金矿田是胶西北矿集区最大的金矿田。在简要概述区域构造背景的基础上,结合玲珑花岗杂岩体重力异常、杂岩体重力延拓特征与矿田构造分析,重点探讨了郭家店幔枝构造的形态特征及其成矿控矿作用,认为地幔热柱多级演化沟通了深部成矿物质来源,郭家店幔枝构造外围拆离带发育的一系列韧—脆性剪切带控制着招远—平度矿集区的矿床分布。在研究焦家金矿控矿构造、矿体展布、垂向延伸和蚀变特征等基础上,总结了焦家金矿田的成矿作用,推测该区进一步找矿方向。Jiaojia is the biggest gold ore field in the northwest region of Jiaodong.Based on the brief overview of the regional tectonic setting,and combined with the gravity anomaly,gravity extension characteristics and analysis of the ore field structure of Linglong granitic complex,this paper discusses the morphological characteristics of Guojiadian mantle branch structure and its controlling role in the mineralization.In this paper,the multi-stage evolution of the mantle plume connects the deep mineral sources.A series of ductile-brittle shear zone,developing in the peripheral detachment of the Guojiadian mantle branch structure,control the deposits distribution of the Zhaoyuan-Pingdu district.According to study the gold ore-controlling structures,ore distribution,vertical extension and alteration characteristics,summarized the gold mineralization of Jiaojia,and pointed out the direction of further exploration in this area.

关 键 词：幔枝构造 成矿作用 控矿构造 焦家金矿田 胶西北地区 

分 类 号：P618.51[天文地球—矿床学]