Among the loess, paleosol and red clay, there are differences in magnetic mineral composition, which strongly indicates the paleoclimate characteristics from the loess, paleosol to the red clay stage.

• 黄土、古土壤和红粘土磁性矿物组成差异，反映了其形成期不同的古气候特性以及不同气候条件下生物地球化学作用强度的差异。