Loess Elements Geochemistry and Its Environment in Dalian Zhoujiagou

It was demonstrated from the analysis of the major elements,CaCO3,pH value and organic matter of the loess profile of Zhoujiagou in south of Liaoning Province that these indicators had certain indicating meaning for the changes of ancient climate environment.The contents of chemical constituents and distribution of Zhoujiagou loess,loess plateau loess had little difference while difference of several elements was resulted from different climate and environment in the later deposition period.The loess was still in the early stage of weathering.The element performance of migration and accumulation of Zhoujiagou loess was different from Malan and Lishi loess,which showed that climate in the south of Liaoning Province in the late Pleistocene and late Pleistocene Epoch changed significantly,namely that humid climate and environment suddenly turned into cool and dry climate and environment.The comprehensive parameters of oxide ratio indicated that here undergone 3 cycles of climate fluctuations was under the total warming trend of the late Pleistocene climate.