Each sequence is composed of incised valley sandstone of low systemtract, limestone, marl, coal and mudstone of transgressive systemtract and clastics and coal of highsystemtract.
The carbonate source rock is controlled by system tracts and facies. The carbonate source rock is mainly developed in highsystemtract in low ramp or is survived with gypsum-salt rock together.
碳酸盐岩烃源岩的形成是受层序体系域和沉积相控制,分布于下斜坡的高位体系域或与膏盐岩伴生。
3
High stand systemtract is composed of coast and shallow lake sedimentary system, fan delta sedimentary system and turbidite fan sedimentary system.