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辽宁省大石桥－吉洞峪一带出露的主要为古元古代的变质层状岩系，由云母片岩、长英质粒岩和大理类组成。区域上形成一大型北东向的复式向斜构造。复向斜南北两翼变质地层对比问题是辽吉东部辽河岩群研究的主要内容之一。作者根据五年来在大石桥－吉洞峪一带进行１∶５万区调所获得的新资料，从标志层及组合标志层、岩相学特征、主要标志层的岩石化学和稀土地球化学特征、变质作用演化等方面的研究入手，讨论了复向斜两翼变质地层对比的问题。结果表明，辽河岩群构成复向斜南北两翼的变质地层是完全可以对比的，从而进一步证实辽河岩群是一个不可分割的整体
The main Paleoproterozoic metamorphic stratigraphic rocks exposed in the Dashiqiao-Jidongyu area of Liaoning Province consist of mica schist, Changying granulite and Dali. A large north-east double synclinal structure is formed in the area. The comparison of the metamorphic strata between the north and south wings of the syncline is one of the main contents of the Liaohe Group of Rocks in eastern Liaodie. Based on the new data obtained from 1: 50000 regional adjustment in Dashiqiao-Jidongyu over the past five years, the author analyzed the characteristics of the lithologic and rare earth geochemical characteristics of the marked layer, the combination of the marker layer, the lithofacies characteristics, the major marker layers, Metamorphism and other aspects of the evolution of the study to start the discussion of the syncline two wings metamorphic stratigraphy comparison issues. The results show that the metamorphic strata formed by the Liaohe Group and the north-south wing of the syncline can be completely contrasted, which further confirms that the Liaohe Group is an integral part