根据层序关键界面、体系域叠置关系及内部构型特征 ,结合生物地层资料 ,右江盆地泥盆系可划分为 1 7个三级层序 ,其中下统 7个、中统 5个、上统 5个 ,包括 9个Ⅰ型层序、8个Ⅱ型层序 ,代表 1 7次三级相对海平面变化产物。在此基础上 ,对不同沉积背景的层序进行了对比 ,建立了相应的层序格架模型。结果表明 ,不同沉积相带的层序内部构型和成因格架存在一定的差异 ,但由于海平面变化这一共同因素的影响 ,它们仍可进行对比和追踪 According to the key sequence stratigraphy, the superimposition relations of system tracts and the internal structure characteristics, with the data of biostratigraphy, the Devonian in the Youjiang Basin can be divided into seven third-order sequences, of which seven are in the lower level, five in the middle level, There are 5 superfamilies, including 9 type Ⅰ sequences and 8 type Ⅱ sequences, which represent 17 tertiary relative sea level changes. On this basis, we compared the sequences of different sedimentary backgrounds and established the corresponding sequence framework model. The results show that there are some differences in the internal structure and genesis framework of sedimentary facies in different sedimentary facies, but they can still be compared and tracked due to the common factor of sea level change