应用多元同位素体系对以辽西地区为代表的华北北缘两侧中生代火山岩开展了初步的同位素填图研究.揭示了以华北地块北缘为界南、北两侧地体具鲜明对比的源区特征,并给出了南区内部东西向规则变化的图景.为探讨华北地区中生代火山岩成因及岩石圈地幔深部过程提供了重要的制约条件. The multivariate isotopic system was used to carry out preliminary isotopic mapping of Mesozoic volcanic rocks on both sides of the northern margin of North China, represented by the western Liaoning Province, revealing that the northern margin of the North China block is the source area with distinct contrast Features, and gives a picture of the east-west rule change in the southern area, which provides important constraints for the discussion of the genesis of the Mesozoic volcanic rocks in North China and the deep processes of the lithosphere mantle.