摘要
南海盆地中生代海相地层是古南海沉积产物,主要分布于南海北部陆架珠江口盆地东部,南海南部西北巴拉望、礼乐滩和南薇西-北康盆地及其附近,地层厚度在2 500～5 000 m,分布面积合计在125 000 km2以上.南北两地中生界被古老基底和新生代洋壳隔开,加里曼丹岛北侧-北巴拉望一线为古南海消亡的缝合带.南海盆地中生代生物源以浮游生物为主,干酪根为Ⅲ型,以生气为主.油气生成、运移与圈闭形成的匹配关系良好,可形成自生自储型油气藏、新生古储型油气藏和古生新储型油气藏.由此可见.,南海盆地中生代海相沉积岩具有较好的勘探潜力.
Mesozoic sea-facies strata in the South China Sea Basin, 2 500-5000 m thick and more than 125 000 km^2 in total area, were formed in the Ancient South China Sea. These sedimentary strata distribute mainly in eastern Zhujiangkou basin in the northern shelf of the South China Sea, and northwest Palawan, Liyue bank, and Nanweixi--Beikang basins and its vicinity in the southern South China Sea Basin. These two parts were partitioned by antique basement and Cenozoic oceanic crust. The suture belt of the Ancient South China Sea exists in an area from north Kalimantan to north Palawan. Biology fountain is mainly plankton that constitutes the source rock of sea-facies in the South China Sea Basin, and kerogen type is III, which mainly generates gas. There exists a good matching relationship among hydrocarbon generation, fluid flow, and traps, and generates self-- generation-- and-- self-- reservation hydrocarbon reservoir, new-generation-- and-- old-reservation reservoir and old-generation-- and-- newreservation reservoir. In summary, Mesozoic sea-facies sedimentary rocks in the Ancient South China Sea Basin have a very good exploration potential.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2005年第4期456-461,468,共7页
Journal of Jilin University：Earth Science Edition
基金
国家自然科学基金重点项目(40234048)
关键词
海相地层
勘探潜力
中生代
南海盆地
sea-facies strata
exploration potential
Mesozoic
the South China Sea Basin
