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为查明新疆土屋_延东铜矿的围岩地层时代、成矿时代和成矿环境等问题 ,文章通过野外调查、岩矿鉴定、古生物化石鉴定和同位素年代学等方面的研究 ,提出围岩地层为石炭系而不是泥盆系 ;锆石SHRIMP定年结果表明 334.6～ 32 0Ma为围岩火山岩的形成时代 ,另外还有两期岩浆活动 (4 34～ 4 2 6Ma和 2 6 0Ma) ;含矿直接围岩主要是斜长花岗斑岩而不是闪长玢岩 ;矿田隶属觉罗塔格构造_成矿带而不是哈尔里克带 ;矿田内斑岩类以及矿带中的石炭纪花岗岩类具埃达克岩特征 ,表明区域上具良好的斑岩铜矿成矿远景
In order to find out the age, ore-forming age and metallogenic environment of Tuwu-Yandong copper deposit in Xinjiang, this paper proposes the research on surrounding rock, rock and mineral identification, paleontology fossil identification and isotopic chronology The strata are Carboniferous rather than Devonian. The zircon SHRIMP dating indicates that 334.6-320 Ma is the age of formation of volcanic rocks in the surrounding rocks, and two magmatic activities (4 34-4 2 6 Ma and 260 Ma) The direct surrounding rocks are predominantly plagiogranite porphyry instead of diorite porphyry; the ore field is subordinated to the Constellation-metallogenic belt rather than the Harricke belt; the porphyry in the ore field and the Carboniferous in the ore belt The granitic class has adakite features, indicating a good prospect of porphyry copper deposits in the area