Lithology and the content of some major elements in the sediments of Buir Lake, East Mongolia

The freshwater Buir Lake in Khalkh Gol soum, Dornod aimag, is located (47° 51′ 47″ N, 117° 29″ E) on the border of Mongolia and Inner Mongolia, China. northwest northeast part lake swampy, flat rest part. This research paper reveals lithology some major elements content (SiO2, Al2O3, TiO2, Fe2O3, MgO, K2O, Na2O, MnO P2O5) core sediments their distribution along depth Chemical Index Alteration (CIA), which will be a significant factor restoring environmental change. According to data analysis sediments, concentration SiO2 ranges from 42.92 58.29%; Al2O3 = 9.25-12.83%; Fe2O3 3.66-4.79%; TiO2 0.46-0.62%; 0.08-0.13%; CaO 5.73-11.56%; MgO 1.34-1.81%; Na2O 0.72-1.50%; K2O 1.58-2.31%; P2O5 0.14-0.26% respectively. chemical index alteration basically same as SiO2, lake, but at 32.5 cm interval sharply decreases also increases. perhaps due global climate patterns water-soluble elements, such CaO, MnO, P2O5, are negatively correlated with alteration. These lead conclude that sediment closely related climatic changes eastern pertaining Upper Pleistocene Holocene epochs.