One or more types of metamorphism were superposed by the geothermal metamorphism, which led to different and complicated coalification patterns in Jixi Coalfield.

• 鸡西煤田由于多数地区受到异常古热流的影响，常存在两种或两种以上类型的变质作用相互叠加，从而导致各区的煤化作用模式各不相同，比较复杂。