岩浆论者将火山作用,地震,造山运动等之主要原因均归于地下岩浆之活动。在我国北部(及东北之南部)于地质时代可分为四次之主要岩浆活动期,各若浆活动期代表主要之造山运动期,造山运动期与造山运动期之间有造陆运动期。各造陆运动期即地向斜形成的时代,有很厚之水成岩层地积,本人以造山运动及造陆运动,火山作用为基础划分我国北部之地质如下表: Magmaists attribute volcanism, earthquakes and orogenies to the activity of underground magmas. In the northern part of China (and the south part of Northeast China), it can be divided into four major magmatism periods in the geologic era. Each period represents the main orogeny period, and there is a land movement period between the orogeny period and the orogeny period. During the period of land-making movement, ie, the syncline was formed, there was a thick layer of aquifer strata. According to the geology of northern China, the geology was divided into the following table based on volcanism and orogeny and land-building movement: