Geochemistry Characteristics Of Paleosol Microelement And REE In Liaoning

In order to realize the geochemical characteristics of paleosol which developed from different parent materials in Liaoning,Microelement and REE contents of 90 samples which developed from quaternary loose sediment,regolith of gneiss and migmatitic granite,eluvium or slope wash of phyllite and schist,eluvium or slope wash of limestone by using ICP-AES method.The results are described as follows:1.The microelement contents of paleosol in Liaoning have the obvious difference on different parent materials,order is Phyllite and schist＞Limestone＞Quaternary loose sediment＞Gneiss and migmatitic;Microelement contents of most paleosol profile show the change rule is Surface＜Bottom＜Middle;Moreover,the microelement contents of paleosol in different area have showed the characteristics are South the high North is low.2.To Analysis and comparison by using the hierarchical cluster analysis,which developed from quaternary loose sediment and regolith of gneiss and migmatitic granite,the results show that:most microelements in paleosol all have the same migration and accumulation,decency leaching,deposition is relatively weak.Paleosol profile had inherited the parent material geochemistry characteristic,and they also had reflected the stabler hypergene behavior when they formed process.3.Microelements Rb/Sr of Paleosol which developed from four parent material in Liaoning is higher than the Luochuan ancient soil profile and the loess profile obviously, Rb/Sr ratio and the Sr contents in Paleosol assumes the obvious negative correlation relations.Moreover the Rb/Sr ratio has from section upper part to lower part enhancing a trend comparatively obviously.4.In Liaoning area,the average gross of REE is 203.25μg/g,all of these are lower than the mean value of Sichuan and Hunan,The mean value of∑Ce/∑Y is 7.89,which shows that latosol is rich in LREE;The average gross of REE is small of the existence difference in different parent material and different area;LREE has the same distributing rules with the gross of REE in different parent material and different area.5.On vertical space,the mean value of REE of leached horizon in granitic latosols of Liaoning area is significantly different from deposition horizon and parent material horizon(P ＜0.05 ),while it is not different between deposition horizon and parent material horizon(P＞0.05).The partition curve is close in deposition layer and parent material horizon,The drifting of the partition curve of leached horizon is far with deposition horizon and parent material horizon.LREE has the same rule with REE on vertical space.