摘要
中国东部下第三系各盆地间有孔虫化石的分布具有纵向上的不等时性，盆地内具有横向上的不连续性，并且有孔虫的分异度和丰度较小，壳体微小、形态强烈变异，与广盐性陆相生物共生．对盐度地化指标的分析表明，有孔虫化石仅出现于高盐度沉积时期，而不出现于最大水进期．这些特征都说明中国东部早第三纪有孔虫的生活环境为陆相咸水湖泊．
Foraminifera of the Paleogene System are found in East China. The environment in which foraminifera lived was studied. The appearence of foraminifera in vertical direction (age) is different among the basins. The distribution of foraminifera in traverse direction (geography) is not continuous in the basins. The diversity and richness of foraminifera are low. The tests of foraminifera are small and strongly variational. Foraminifera are coexistence with euryhaline continental organisms. Foraminifera appear only in the sedimentary period of high paleosalinity, not in that of the highest water level. These characteristics show that foraminifera of paleogene in East China lived in continental saltwater lake.
出处
《石油大学学报（自然科学版）》
CSCD
1997年第2期1-3,7,共4页
Journal of the University of Petroleum,China(Edition of Natural Science)
基金
国家重点科技攻关项目
关键词
有孔虫
生活环境
陆相
咸水湖
早第三纪
Foraminifera
Environment of life
Continental facies
Saltwater lake
Paleogene
East China .
