一、总论燕辽沉降带与胶辽地块是两个性质不同的地质构造单元,前者具有准地槽性质,后者基本上是个古陆。中生代时期,二者一起复活,在其交界处产生了一系列巨大破碎带,顺沿破碎带,有频繁的岩浆活动。在破裂带内,主要分布的是燕山期侵入岩。 I. General The Yanliao subsidence belt and Jiaoliao block are two different geological structural units with the characteristics of quasi-geostrophic. The latter is basically an ancient land. During the Mesozoic Era, the two resurrected together and produced a series of huge crushing zones at their junctions along the crushing zone with frequent magmatic activity. Within the rupture zone, the Yanshanian intrusive rocks are mainly distributed.