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位于古生代东西向构造岩浆带和中、新生代北东向构造岩浆带交汇处的延边地区，在中侏罗－早白垩世期间生成两套中－高钾钙碱性火山－侵入杂岩。中侏罗世（１８０－１７０Ｍａ），该区受Ｆａｒａｌｌｏｎ板块俯冲作用影响，在（２４—２７）×１０８Ｐａ，１０７８—１２３０℃和８０—９０ｋｍ深处，由地幔岩两阶段熔融产生玄武安山质岩浆，经分异演化生成一套低稀土元素且分异作用良好的火山岩系．晚侏罗世（１６０—１４５Ｍａ）期间，Ｆａｒａｌｌｏｎ板块向北东方向横推致使该地区缺乏岩浆活动。早白垩世（１４０—１３０Ｍａ）期间Ｉｚａｎａｇｉ板块向欧亚大陆低角度俯冲，该区在２５．５－２８．５）×１０８Ｐａ，１１１７—１１３８℃和８５—９５ｋｍ处生成玄武安山质岩浆，经分界演化形成一套高稀土分异作用较差的火山岩系。
Located in the Yanbian area where the Paleozoic east-west tectonic magmatic belt and the Mesozoic-Cenozoic north-eastern tectonic magmatic belt meet, two sets of Meso-High-K calc-alkaline volcanic-intrusive complexes were formed during the Middle Jurassic-Early Cretaceous. Middle Jurassic (180-170 Ma), which is affected by the subduction of the Farallon plate. At (24-27) × 108 Pa, 1078-1230 ℃ and 80-90 km depths, basaltic andesitic The magma produced a set of low-earth-element and well differentiated volcanic rocks through differentiation and evolution. During the Late Jurassic (160-145 Ma), the Farallon plate was pushed north-eastward, resulting in a lack of magmatic activity in the area. During the Early Cretaceous (140-130 Ma), the Izanagi plate subducted to the Eurasian continent at low angles. The basaltic andesitic magma was generated at 25.5-28.5 × 108Pa, 1117-1138 ℃ and 85-95km. Demarcation evolves to form a volcanic series with poorly differentiated REE.