Geomorphic Transformational Event Around 1.2 Ma B.P. in the Southern Shanxi Province
Based on the studies of magnetic susceptibility, paleomagnetism and loess-paleosol sequence of the Chaizhuang and Yangfan sections in the southern Shanxi Province, it is suggested that these sections documented a geomorphic transformation from fluvial environment to the loess environment around 1.2 Ma B. P. Combining with the analyses of the sedimentary environment and tectonic background, we proposed that this event is likely the result of the uplift of the transverse horsts, the Chaizhuang horst between the Linfen and Houma basins, the Emeitai horst between the Houma and Yuncheng basins, in the Shanxi graben system which probably linked with the tectonic movement in the Tibet Plateau.