SIGNIFICANCE OF MESO-CENOZOIC TECTONIC MOVEMENTS IN MARIN PETROLEUM EXPLORATIONS IN THE SOUTH OF CHINA

The Meso-Cenozoic tectonic movements have great influence on present petroleum accumulations in Paleozoic basins in the south of China.The above mentioned movements have caused deformation in Paleozoic basins and controlled basin characteristics and petroleum preserve.Based on the analyses of tectonic deformations in the west and northeast of Sichuan as well as the west of Hu'nan and Hubei,the Paleozoic "parautochthonous petroleum system" in the lower plate of nappe is the main exploration target in the piedmont of Longmen Mountain in the west of Sichuan;the Paleozoic in nappe zones in the piedmont and the east of Daba Mountain is a potential area;the anticlines in the front of thrust zone in the piedmont of Daba Mountain are favorable for exploration;and the zone with complicated basin tectonics and petroleum distribution along the northwest of Xuefeng-Jiangnan nappe belt is worth further exploration.