Rock magnetic investigations of loess-paleosols along a profile at Dali (Shaanxi) had identified magnetite and maghemite in pseudo-single domain (PSD) states, as well as hematite. Thermal demagnetization uncovered characteristic remanent magnetization directions carried by magnetite and hematite. The magnetic susceptibility enhancement of paleosol samples mainly arose from superparamagnetic grains and ferrimagnetic minerals. Stratigraphic variations of the frequency susceptibility correlated well with oxygen isotope curve and fine microparticle content curve of the Guliya icecore. Organic content curve of Qishan Wulipu had good paleoclimate record consistency. They all showed that paleoclimate had gradually changed from glacial period to interglacial period since at least MIS5. On the contrary, it changed rapidly from interglacial period to glacial period.
