Coalfield Structure Features and Coal Occurrence Tectonic Units Partition of Northeast China

On the basis of a new round of Northeast China potential evaluation on coal resources, and reference to the latest achievements about regional geologic al and energy basins, the article analyzed the main features of the Northeast China coalfield structure. Most coal basins were half-graben, graben basin and mainly tren d NE and NNE direction, which formation was closely related with volcanic activity. The article identified the boundary of Northeast China coal occurrence area accordin g to coal occurrence features and structural pattern. Application of the theory of coal occurrence tectonic units, Northeast China coal occurrence area was divided into 1 1 coal occurrence tectonic zones. The article systemically discussed the basic characteristics of the nature of the basement, basin structure and coal-control of each co al occurrence tectonic zone.