胶东牟平-乳山成矿带拆离断层控矿特征及找矿方向  

Characteristics of Ore-Controlling Detachment Fault and Future Prospecting in the Muping-Rushan Metallogenic Belt,Eastern Shandong Province

作　　者：杨喜安[1] 赵国春[1] 宋玉波 田飞[1] 董汉文[1] 高建伟[1] 

机构地区：[1]中国地质大学地质过程与矿产资源国家重点实验室,北京100083 [2]山东金洲集团,山东乳山264500

出　　处：《大地构造与成矿学》2011年第3期339-347,共9页Geotectonica et Metallogenia

基　　金：胶东地区石英脉型金矿床成矿规律总结研究(编号:20089937);国家重点基础研究发展计划(973计划)(2009CB421003;2009CB421005);高等学校学科创新引智计划项目(B07011)

摘　　要：通过对比牟乳成矿带和其西部变质核杂岩区金矿床的控矿构造、成矿时代、地球化学特征可知,这些金矿床具有同构造、同成矿期、同物质来源的特点,控矿构造同为拆离断层,其中牟乳成矿带为拆离断层上盘发育的,一系列近似平行且等间距的NNE向的断层控矿。预测在牟乳成矿带下部,即在拆离断层附近可能存在品位更高、厚度更大的矿床。The Muping-Rushan belt situated in Eastern Shandong is one of the three main metallogenic belts in Shandong peninsula.The ore-controlling structure is characterized by a series of roughly parallel,distant NNE-trending faults.Comparison of the ore-controlling structures,metallogenic geochronology and geochemistry of the Muping-Rushan metallogenic belt with the gold deposits in its western metamorphic core complex suggests that they are syntectonic,coeval and cogenetic.A detachment fault,its secondary fault system developed in the upper side in particular,controls the occurrence of the gold deposits in the western area.It can be inferred that there may be a higher grade and thicker gold orebodies at depth,close to the detachment fault beneath the belt.

关 键 词：金矿 拆离断层 控矿构造 

分 类 号：P542[天文地球—构造地质学] P613[天文地球—地质学]