用地球化学方法勘查中国南海的天然气水合物.pdfVIP

海 洋 地 质 第 四纪地 质 2004 年8 月 与 VoI. 24 ，No. 3 第24 卷 第3 期 MARINE GEOLOGY OUATERNARY GEOLOGY Aug. ，2004 SEARCH FOR GAS HYDRATES IN THE SOUTH CHINA SEA ：A GEOCHEMICAL APPROACH JIANG Shao-yong1，2 ，YANG Jing-hong1，2 ，LING Hong-fei1，2 ，YANG Tao1，2 ， CHEN Dao-hua2 ，3 ，XUE Zi-chen1，2 ，JI Jun-feng1，2 ，NI Pei1，2 （1 State Key Laboratory for MineraI Deposits Research ，Department of Earth Sciences ，Nanjing University ，Nanjing 210093 ，China ； 2 Research Center for Marine Geochemistry ，Nanjing University ，Nanjing 210093 ，China ； 3 Guangzhou Marine GeoIogicaI Survey ，Guangzhou 510760 ，China ） Abstract ：Gas hydrate is a potentiaI new energy source ，which occurs both in marine sediments and in permafrost re- gions. Gas hydrates are in vast amount and show potentiaI economic and environmentaI significance. In recent years，naturaI gas hydrates have increasingIy attracted worIdwide attention and a vast amount of research work has been conducted regard- ing the occurrence，distribution ，and formation mechanism of marine gas hydrates in the worIds ocean. However ，the gas hy- drate research and expIoration in China is just starting. In the South China Sea ，severaI Iines of evidence have shown favora- bIe conditions for gas hydrate existence ，incIuding the geoIogic and tectonic settings ，the temperature-pressure conditions ， and the thick organic-rich sediments. Direct evid