THE EVOLUTION OF CHINESE PLATE AND ITS PETROLIFEROUS BASINS

Chinese Plate (the mainland of China) which is a part of Eurasian, mainly consists of the Tarim Sinokorean and South China, as well as parts of Siberian-Kazakhatanian and Indian plates. Previous to the formation of Chinese Plate during Indosinian stage, the structural frame-work was EW trending mainly with marine sedimentary formation due to hot baryshere flow, brought about latitudinally spreading of sea floor to north and south. Subsequently,the oceanic ridge expansion took place and resulted into the formation of SN structural framework principally with non-marine sedimentary formation. Post to the formation of Chinese Plate,the basins of the eastern part of the plat (eat 15°-43° from tropic to temperate and frigid zones) are mostly of thermally extensionai basins under the effectness of new-born Pacific Plate, while those of the western part of the plate are cooly compressional basins influenced by Tethys. In a view of Chinese Plate movement as a whole,there are different characters in the individual plate movements which reflect various paleogeographical environments and the conditions for oil/gas generation. Generally speaking, petroliferous basins would develop at the interior of plate,and basin boundary and oil/gas boundary are both controlled by plate movements and the rework on them. Meanwhile, the distribution of oil/gas fields would be related to the center of oil generation. The migration traces of the depocenter and the depositional boundary for a large basin are supposed to be coincided with those of a plate. Therefore, it is practically significant in this study.