胶东海域金矿床元素富集贫化特征及深部预测

张亮亮, 朱立新, 马生明, 林少一, 戴长国, 周明岭, 霍光, 徐忠华, 席明杰, 张涛

Elements enrichment and dilution characteristics and deep metallogenic prognosis in the Haiyu gold deposit, Jiaodong Peninsula

ZHANG Liang-Liang, ZHU Li-Xin, MA Sheng-Ming, LIN Shao-Yi, DAI Chang-Guo, ZHOU Ming-Ling, HUO Guang, XU Zhong-Hua, XI Ming-Jie, ZHANG Tao

图1 胶东半岛区域地质和金矿分布简图(据宋明春等[20]修编 ) 1—第四系;2—新近系、古近系;3—白垩系;4—古-新元古界;5—含榴辉岩的新元古代花岗质片麻岩;6—太古宙花岗-绿岩带;7—白垩纪崂山花岗岩;8—白垩纪伟德山花岗岩;9—白垩纪郭家岭花岗闪长岩;10—侏罗纪花岗岩;11—三叠纪花岗岩;12—整合/不整合地质界限;13—断层;14—以往探明的浅部金矿床位置(直径由大到小分别表示资源储量≥100 t的超大型金矿床、资源储量 20~100 t的大型金矿床、资源储量5~20 t的中型金矿床和资源储量<5 t的小型金矿床);15—新探明的深部金矿床位置(直径大小的意义同图例14);16—蚀变岩型金矿/石英脉型金矿/其他类型金矿;17—三山岛北部海域金矿位置

Fig.1 Regional geological map of the Jiaodong Peninsula,showing distribution of gold deposits (modified from Song M C,et al[20]) 1—Quaternary; 2—Neogene,Paleogene; 3—Cretaceous; 4. Paleo-Neoproterozoic; 5—Neoproterozoic granitic gneiss containing eclogite; 6—Archean granite-greenstone belt; 7—Cretaceous Laoshan granite; 8—Cretaceous Weideshan granite; 9—Cretaceous Guojialing granodiorite; 10—Jurassic granite; 11—Triassic granite; 12—Conformity/unconformity geological boundary; 13—fault; 14—the location of the shallow gold deposits proven in the past (the diameters from large to small indicate super-large gold deposits with resource reserves ≥100 t, large-scale gold deposits with resource reserves of 20~100 t, medium-sized gold deposits with resource reserves of 5~20 t and small-scale gold deposits with reserves <5 t); 15—the location of the newly discovered deep gold deposit (the diameter has the same meaning as in legend 14); 16—altered-rock type gold deposits/quartz-vein type gold deposits/other types of gold deposits; 17—the location of north Sanshan island water gold deposit