Accumulation and exploration of gas hydrate in deep-sea sediments of northern South China Sea

作者：Zhang Guangxue; Chen Fang; Yang Shengxiong; Su Xin; Sha Zhibin^*; Wang Hongbin; Liang Jinqiang; Zhou Yang

来源：Chinese Journal of Oceanology and Limnology, 2012, 30(5): 876-888.

DOI：10.1007/s00343-012-1313-6

• northern South China Sea
• deep-sea sedimentation
• sediment wave
• natural gas hydrate

The large deep-sea area from the southwestern Qiongdongnan Basin to the eastern Dongsha Islands, within the continental margin of northern South China Sea, is a frontier of natural gas hydrate exploration in China. Multiform of deep-sea sedimentations have been occurred since late Miocene, and sediment waves as a potential quality reservoir of natural gas hydrate is an most important style of them. Based on abundant available data of seismic, gravity sampling and drilling core, we analyzed the characteristics of seismic reflection and sedimentation of sediment waves and the occurrence of natural gas hydrate hosted in it, and discussed the control factors on natural gas hydrate accumulation. The former findings revealed the deep sea of the northern South China Sea have superior geological conditions on natural gas hydrate accumulation. Therefore, it will be of great significance in deep-sea natural gas hydrate exploration with the study on the relationship between deep-sea sedimentation and natural gas hydrate accumulation.

• 出版日期2012-9
• 单位广州海洋地质调查局; 中国地质大学（北京）