COMPUTER SIMULATION ON FORMING PROCEDURE OF CONTINENTAL SEQUENCE IN THE UPPER MEMBER OF Eh~(3-2), SHUANGHE-ZHAOWA,BIYANG FAULT SUBSIDENCE

Synthetically considering plenty of geological factors such as recharge of land-source fragmental material,sedimentation of chemically formed carbonate rock,sedimentary erosion and resedimentation, gravity flow deposit,structural elevator,horizontal displacement and so on,a math-physical equation which is comprehensive to simulate every type of basin was set up.In general, actual accommodation change is caused by multiple factors,especially by the congruence of denivellation and basement tectonics subsidence.Based on the synthetical analysis of the actual geological data in researching area,the theoretical curve model of denivellation and basement tectonics subsidence during the sedimentary period of the upper part of upper member of the Hetaoyuan Fm. in Shuanghe-Zhaoao of Biyang fault subsidence has been established,and the rate curve of accommodation change has also been acquired.According to above all and using the simulation system of quantitative sequence stratigraphy designed by this paper,the responsed characteristics of lake facies quence with the procedure of accommodation change has been simulated.