关键词: 早第三纪, 生物相, 湖泊, 化石, 辽河断陷, 油气分布, 古生物, 沉积环境, 油气生成, 油气聚集

Abstract: By a study of the planar distribution of prominent aquatic organisms in Eogene in Liaohe fault depression,the author demonstrates that the deep lake and shallow lake had controled the fossil distributions,and that areas where deeper water organisms is distributed are better oil-generation areas,especially in the inherently deep lake areas,and that the shal-low water areas are not favorable areas for oil-generation,oil distributions are controled by the extent of the lake in each age.