Relationship between the Oil一Gas and Process of Depositon- Erosion in Tarim Basin

Key words: 
• chronological framework一period /
• sedimentation rate /
• slipping window /
• entrapment cycle /

Abstract: Based on the periodic analysis for the typical wells of Tarim Basin with the method of wave analysis，theperiod of 100 Ma was obviously seen. Since Cambrian，there are four complete periods and each of them iscomposed of two half-periods of positive phase and negative phase. Tertiary is the positive phase of the fifthperiod. All of the processes of deposition and erosion，and entrapment cycles are controlled by the 100 Ma pe-riod. The controlling effects of the period for the process of deposition and erosion are confirmed by that thepositive and negative phases are corresponding to the depositional and erosional ages, respectively. The con-trolling effects of the period for petroleum system are known by that the petroleum system of the Early Paleo-zoic is made up of the first periodic wave，the petroleum systems from the Late Paleozoic to the Mesozoic con-sisted of the second to fourth periodic waves, and the petroleum system of Cenozoic is made up of the positivephase of the fifth period.