PRELIMNARY RESTORE OF THE MESOZOIC ORIGINAL BASIN AND ITS MAIN CONTROL FACTORS IN JIYANG SAG
济阳坳陷中生代原型盆地的初步恢复及其主控因素

Based on the analysis of the 4000m deep horizontal slice and the Mesozoic(J-K)Xiwa formation residual isopach map of Jiyang sag,the Mesozoic original basin was preliminarily restored in the paper.The results show that the original basin exists three types,that is,the first one is the northwestern type,which is located at the east of the sag;the second one is the northeastern type,which is located at the west of the sag;and the third one is the nearly east-west type,which is located at the center of the sag.Through the further analysis of the slice and its tectonic stereo-gram(including the distribution of the fault and symon fault),the main controlling factors of the Msozoic basin is northeastern andnorthwestern structures(including faults and symon fsult).It is very significant of these points in the paper for the guide of trapping advantageous objects in the next oil-gas exploitation of Jiyang sag.