Alluvial systems tract is composed of alluvial fan or braided fan and braided stream, transgressive systems tract and regressive systems tract are respectively composed of degrading and progradin...

• 水进和水退体系域分别为退积型和进积型扇三角洲、辫状三角洲和湖泊沉积为主，指示了断陷湖泊的扩张和收缩，发育较完整；