唐梅华. New Research Progress of Yanshanian Magmatism and Hydrothermal-type Uranium Mineralization in Yanliao Region[J]. 2015, (4): 10-13. DOI: 10.16056/j.1005-7676.2015.04.004.
The Yanshanian magmatic activity in Yan Liao Area seems to be strong
From the viewpoint of chronology
the volcanism of all these volcanic belts can be subdivided into five stages: the Early Jurassic to early Middle Jurassic
late Middle Jurassic to early Late Jurassic
early stage of Early Cretaceous
late stage of Early Cretaceous and early stage of Late Cretaceous. The peak of magmatism in Eastern China is the early stage of Early Cretaceous volcanism
and the intrusive rocks are late Middle Jurassic to early Late Jurassic and early stage of Early Cretaceous. The area is mainly charactered by rhyolite-trachyte rock assemblage
it has good basis of the distribution of magmatic rocks in Yan Liao Area and mineralization connect with the volcanic
supply a direction of the hydrothermal-type uranium deposits related to volcanic activities.