胶东东部威海地区金及有色金属成矿系列

Metallogenic Series of Gold and Nonferrous Metal Ores in Weihai Area in Eastern Jiaodong

威海地区位于胶东东部,以米山断裂为界,其西部以产金为主,而东部地区是金及多金属矿的主要分布区,以往研究初步揭示了该区的有色金属成矿与中生代燕山晚期伟德山花岗岩活动有关。该文选择大邓格多金属矿床、夼北铜矿床、冷家钼矿床、范家埠金矿床、产里铅锌矿床和同家庄银矿床等作为重点研究对象,研究了其成矿物质来源、成矿时代和空间分布规律、成矿环境和机理,分析了有色金属矿成矿规律,确立了6个典型矿床式,建立了威海地区与中生代燕山晚期中酸性岩浆活动有关的金及有色金属成矿系列和成矿模式。

Weihai is located in the eastern part of Northwest Jiaodong Peninsula Gold Concentration Area＂. Taking Mishan fault as the boundary,we can find that gold mines mainly are yield in the west, while multi metal mines are yield in the east. It has been initially revealed that multi metal ores in the study area are closely related to the late Yanshanian intermediate -acid intrusive rocks （the Weideshan Granite） of Meso zoic. In this paper, six typical deposits are selected for the study, which are Dadengge multi -metal deposit, Kuangbei copper deposit, I.engjia molybdenum deposit, Fanjiabu gold deposit, Chanli lead zinc deposit and Tongjiazhuang silver deposit. By means of analysis of the metallogenetic material source, environment, epoch and mechanism, the ore forming rule of gold and multi metal Deposits has been re searched, and six typical deposit types are established. Then it is concluded that the metallogenic series of gold and nonferrous metal ores is related to late Yanshanian intermediate -acid intrusive rocks （the Weide shan Granite） of Mesozoic. Also, the metallogenic model is been discussed in this paper.