Abstract:

It is Pointed out in this paper that the continental shelf of China is the na-tural extension of China's continent in seas,including five geological tectonic units which are,from north to south,Bohai Bay depression zone,Jiaodong-Liaodong uplift zone,North Jiangsu-South Yellow Sea depression zone,Zhe-jiang-Fujian-Guangdong uplift zone and the East China Sea-Northern South ChinaSea Shelf depression zone,arranging in NE and NNE directions.The distributionof Pre-Tertiary basement rocks of Chinese Continental Shelf may be dividedinto twelve areas as follows:1.Bohai area of Jurassic-Cretaceous distribution;2.The North Yellow Sea area of Pre-Cambrian metamorphic rocks;3.The South Yellow Sea area of Permian-Triassic carbonate rocks;4.The East China Sea area of Mesozoic rocks distribution;5.The Northern South China Sea area of Pre-Cambrian crystallized meta-morphic rocks;6.Guangdong-Guangxi coastal area of the Lower Paleozoic metamorphicrocks;7.Guangdong-Guangxi coastal area of the remnant Upper Paleozoic rocks;8.East Guangdong coastal area of Upper Triassic-Lower Jurassic marinefacies;9.Zhu-1 depression area of Middle and Upper Jurassic-Cretaceous vol-canic rocks;10.Penghu-Dongsha Islands area of Cretaceous marine facies;11.The Northern Shelf area of the South China Sea of Upper Cretaceous distribution;12.Deep-marine plain area of ocean basalts distribution.Pre-Tertiary basement rocks which underwent a long-term geological evolution with widely spread marine facies and continental facies deposits and varioustypes of magmatic rocks.Numerous tectonic zones and different kinds of re-servoirs may form basement rock oil and gas pools of younger source rock-elder reservoiring type and the basement rock themselve generating-basement rock reservoiring type.Therefore,oil and gas potential there may be prosperous.