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THE CHARACTERISTICS OF GEOPHYSICAL FIELD AND THE DISTRIBUTION AND FORMATION OF OIL-AND GAS-BEARING BASIN IN EASTERN CHINA

TENG JI-WEN WANG QIAN-SHEN LIU YUAN-LONG WEI SI-YU (Institute of Geophysics, Academia Sinica)  
Based on the crust and upper mantle structures on both sides of the Tancheng-Lu-jiang Fault System in the epicontinental region of Eastern China, as well as on the characteristics of the geophysical fields there, we discuss, in this paper, the relation between these characteristics and the distribution of a series of rift valley oil- and gas- bearing basins, as well as the sedimentation and evolution of these basins.The conclusions are that, all these basins are distributed in uplifted regions of the upper mantle and that there exist anomalies of geophysical fields as well as anomalistic crust and upper mantle structures. In these basins, there are Meso-Cenozoic thick sediments, with favourable conditions for the formation and accumulation of petroleum. The formation of these basins is directly connected with the motion of the Pacific and Eurasian plates and is restricted by the movement of the material in the deep mantle.
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