Abstract:

An attemps is made by the author on the basis of plate movement to studythe relations between subsidence, depositional-and oil-generation center. It issuggedted that: 1. The depocenter is controlled by the velocity and ratio of subsidence while the oil-generation center is controlled by organic matter and its thermo-maturity. 2. The depocenter is related to the system and classification of the basin,and has influence on the remigration of hydrocarbon. 3. The optimum period of the source beds for the tensile basins in East China must satisfy the boundary condition, that is to say, Vt≥3.5 Vs (here Vt issubsidending velocity,and Vs is depositing velocity);While for those compressivebasins in West China, it is important to find favourable sedimental facieszones and traps in wide synclines of nappes to the basins' boundaries. 4. The trace of depocenter in giant basins of the Chinese plate suggests that, (1) They have cyclicity (appeared as "O" or "S" shape); (2) There was differential before and after the Indosinian movement; (3) Different geological times have different development stages. 5. All the plates in China were connected as a whole in the Meso-Cenozoic,and the trace of the Mesozoic shows a left-lateral "O" style, but that the Cenozoic emerges a movement from west to east.