关键词: 南海北部, 大陆架, 油气区第三纪, 生物地层学, 地层对比, 地层时代确定, 古新世, 始新世, 古沉积环境, 古气候

Abstract: It is named Changliu formation for the Palaeocene-Early Eocene in the Beibu Gulf Ba-sin.The paleontological assemblage of this formation is very similar to that of Paleocene-Eocene in the basins of South China and East China.It is named Shenhu formation for the Paleocene-Early Eocene in the Pearl River Mouth Basin.The palynological as-semblage,especially in some of extinct fossils,of this formation is similar to that in Changliuormation.The paleoclimate in these epoch is arid and moderately hot in the early stage,anddamp and hot in the later.The sedimentary environment is generally alluvial and fluvial faciesin early and local lacustrine facies in later.