In the profile,the strata can be divided from the bottom upwards into fluvial sandy gravel,horizontally vermiculated ferruginous red soil,vertically vermiculated red soil,red clay and eolian Xiashu loess,3.3m,4.5m,5.9m,3.6m and 4?1m thick respectively.

• 该剖面地层自下而上可分为河流相冲积砂砾石、以发育水平状网纹为特征的铁质网纹红土、以垂向网纹为特征的网纹红土、红色粘土和风成下蜀黄土，分别厚3.；3、4