摘要
河北怀来—涿鹿盆地更新统自下而上划分为泥河湾组、官厅组、马兰组和吉家营组 4个组 ,其中吉家营组为一新建立的岩石地层单位。通过详细的生物地层学研究 ,共划分出 3个介形虫化石组合带、3个瓣鳃类及腹足类化石组合带和 8个孢粉组合带 ,结合各组同位素年龄数据 ,对其形成时代进行了探讨。
The Pleistocene of the Huailai-Zhuolu basin in Hebei could be subdivided in ascending order into the Nihewan, Guanting, Malan and Jijiaying Formations, of which the Jijiaying Formation is a newly established lithostratigraphic unit. Detailed biostratigraphic study reveals that the sequence could contain 3 Ostracoda assemblages, 3 Lamellibranchiata and Gastropoda assemblages and 8 sporopollen assemblages, whose ages are discussed on the basis of radioactive dating.
出处
《中国区域地质》
CSCD
2000年第2期137-143,共7页
Regional Geology of China
关键词
更新世
岩石地层
化石组合带
盆地
生物地层
Pleistocene
lithostratigraphic unit
fossil assemblage zone
Huailai-Zhuolu basin
