山东胶东地区金矿成矿时代研究  

Study on Gold Mineralization Ages in Jiaodong Area,Shandong Province

作　　者：李洪奎[1] 时文革[2] 李逸凡[3] 李璐邑[4] 韩代成[1] 曹丽丽[1] 刘继梅[1] 

机构地区：[1]山东省地质科学实验研究院国土资源部金矿成矿地质过程与资源利用重点实验室,山东济南250013 [2]东北大学,辽宁沈阳110819 [3]潍坊学院建筑与工程学院,山东潍坊261061 [4]辽宁石油化工大学,辽宁抚顺113001

出　　处：《黄金科学技术》2013年第3期1-9,共9页Gold Science and Technology

基　　金：国家自然科学基金项目"山东胶东地区蚀变岩型金矿深部找矿综合信息模型研究及应用"(编号:41140025);全国矿产资源潜力评价项目"山东省成矿地质背景研究"(编号:1212010813014-01)联合资助

摘　　要：在进行胶东金矿成矿地质背景和深部找矿研究的基础上,总结发现山东胶东地区中生代构造演化对区内的构造—岩浆事件、沉积环境和成矿作用起着制约与控制作用,岩浆—沉积—构造—成矿事件与区域构造事件具有相互耦合性。金矿的形成和定位与燕山期造山早期、造山中期和造山晚期3个构造幕紧密相关,分别与玲珑、郭家岭和伟德山岩体的构造—岩浆热事件相耦合。通过统计胶东已报道的318件金矿成矿年龄样品,划分了105～81 Ma、130～110 Ma和160～141 Ma共3个成矿年龄集中区间,按照成矿作用和构造—岩浆热事件的耦合关系,分为挤压环境下的金钼矿成矿作用、挤压—伸展环境的金银矿成矿作用和后造山环境的金—多金属矿成矿作用。胶东地区金矿成矿时代的峰期成矿年龄集中在120 Ma左右,世界级三山岛、焦家金矿田的成矿地质环境具有独特性和不可复制性。On the basis of studying geological background of gold mineralization and deep prospecting in Jiaodong area,it is summarized and found that Mesozoic tectonic evolution in this region control tectonic-magmatic events, sedimentary environment and mineralization.Magma-deposition-structure-mineralization events have mutual coupling relation with regional tectonic events.Gold mineralization and positioning have close relation with three tectonic episode, they are early Yanshanian period,middle orogenic period and late orogenic period,while have mutual coupling relation with Linglong,Guojialing and Weideshan tectonic-magmatic events.By Statistics, 318 samples of gold mineralization ages in Jiaodong area can be divided into three age concentration range as 105-81 Ma, 130-110 Ma and 160-141 Ma.According to mineralization and mutual coupling relation of tectonic- magmatie thermal events,it can be divided into gold molybdenum mineralization under the extrusion environment, gold and silver mineralization under the extensional environment and gold and multi-metal mineralization under the post-orogenic environment.Gold mineralization is concentrated in 120 Ma.Geological environments of Sanshan- dao and Jiaojia gold fields which are world-class are unique and can not be copied.

关 键 词：热事件 构造环境 成矿作用 成矿时代 胶东地区 山东省 

分 类 号：P618.51[天文地球—矿床学]