The studied region may be divided into platform system,slope system,shelf system and basin system. The shelf system was developed in the Early Devonian to early Middle Devonian.

• 研究区可划分出四种沉积体系,即台地体系、台坡体系、陆棚体系、台盆体系,其中陆棚体系主要发育于早泥盆世至中泥盆世早期;