This paper indicates the reasons of establish member and introduces its origin and stratotype section, as well as its extend and correlation.At last, its geological age is discussed.

文中阐述了建段的理由，介绍了名称来源、型剖、的延伸与对比，论了质时代。

Paleomagnetic measurements demonstrate that the Jijiagou section which is the stratotype one of Baode Stage of the Neogene in China records 12 normal and 11 reversed polarity zones.

测量表明,中国新近系保德阶界线型,山西保德冀家沟剖记录了12个正极性段与11个负极性段。