本文运用地洼学说观点指出兰州—天水北部地区是一个长期活动区,其古生代地槽活动时间长,尔后直接进入中亚期地洼阶段,矿床不仅均属地槽型和地洼型,而且以内生金属矿床为主。文章重点分析和总结了该区成矿岩浆活动的特点,矿床类型及成矿规律,最后提出了在找矿方面应注意的几个基本问题。 In this paper, we use the theory of diwa to point out that Lanzhou-northern area of ​​Tianshui is a long-term activity area, and its Paleozoic active trough has been active for a long time and then directly enters the depression stage of Central Asia. The deposit is not only of the trough type and depression type, Main metal deposits. The paper focuses on analyzing and summarizing the characteristics of magmatic activities, the type of ore deposits and the metallogenic regularity in the area, and finally puts forward some basic problems that should be paid attention to in prospecting.