摘要
The forming conditions of gas hydrate in the China seas according to the physicaloceanography, palaeo-climate, sedimentary environment, and tectonic environment are discussed in this paper. The researching results show that the organism producibility is high and there are rich organic matters in sediments of the period 2, 4, 6 of oxygen-isotope in the South China Sea. In these periods the sedimentary velocity was very high, and there are very good material conditions for the formation of gas hydrate.