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° 51′ 29″ E) on the border of Mongolia and Inner Mongolia, China. The northwest and northeast part of the lake is swampy, and is flat in the rest part. This research paper reveals the lithology and some major el...
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Mongolian Academy of Sciences
2022-03-01
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| Series: | Proceedings of the Mongolian Academy of Sciences |
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| Online Access: | https://www.mongoliajol.info/index.php/PMAS/article/view/2084 |
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| author | Oyunchimeg Tserentsegmid Davaadorj Davaasuren |
| author_facet | Oyunchimeg Tserentsegmid Davaadorj Davaasuren |
| author_sort | Oyunchimeg Tserentsegmid |
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| description | The freshwater Buir Lake in Khalkh Gol soum, Dornod aimag, is located (47° 51′ 47″ N, 117° 51′ 29″ E) on the border of Mongolia and Inner Mongolia, China. The northwest and northeast part of the lake is swampy, and is flat in the rest part. This research paper reveals the lithology and some major elements content (SiO2, Al2O3, TiO2, Fe2O3, MgO, K2O, Na2O, MnO and P2O5) of the core sediments and their distribution along the depth and the Chemical Index of Alteration (CIA), which will be a significant factor in restoring environmental change. According to the data of analysis of major elements of Buir Lake sediments, the concentration of SiO2 ranges from 42.92 to 58.29%; Al2O3 = 9.25-12.83%; Fe2O3 = 3.66-4.79%; TiO2 = 0.46-0.62%; MnO = 0.08-0.13%; CaO = 5.73-11.56%; MgO = 1.34-1.81%; Na2O = 0.72-1.50%; K2O = 1.58-2.31%; and P2O5 = 0.14-0.26% respectively. The chemical index of alteration is basically the same as the distribution of SiO2, Al2O3, TiO2, Fe2O3, MgO, K2O and Na2O in the sediments of the lake, but their content at 32.5 cm interval of the core sharply decreases and also increases. This is perhaps due to global climate change. The content and distribution patterns of water-soluble elements, such as CaO, MnO, and P2O5, are negatively correlated with the chemical index of alteration. These lead to conclude that major elements of Buir Lake sediment and Chemical Index of Alteration are closely related to climatic changes in eastern Mongolia pertaining to the Upper Pleistocene and the Holocene epochs. |
| format | Article |
| id | doaj-art-100b42ce8c3e45ae81baae5f6656052f |
| institution | Kabale University |
| issn | 2310-4716 2312-2994 |
| language | English |
| publishDate | 2022-03-01 |
| publisher | Mongolian Academy of Sciences |
| record_format | Article |
| series | Proceedings of the Mongolian Academy of Sciences |
| spelling | doaj-art-100b42ce8c3e45ae81baae5f6656052f2025-08-20T03:25:27ZengMongolian Academy of SciencesProceedings of the Mongolian Academy of Sciences2310-47162312-29942022-03-01112410.5564/pmas.v62i01.20842035Lithology and the content of some major elements in the sediments of Buir Lake, East MongoliaOyunchimeg Tserentsegmid0https://orcid.org/0000-0002-5450-7320Davaadorj Davaasuren1https://orcid.org/0000-0001-9638-6793Department of Magmatism and Metallogeny, Institute of Geology, Mongolian Academy of Sciences, Ulaanbaatar, MongoliaDepartment of Geography, School of Arts & Science, National University of Mongolia, Ulaanbaatar, MongoliaThe freshwater Buir Lake in Khalkh Gol soum, Dornod aimag, is located (47° 51′ 47″ N, 117° 51′ 29″ E) on the border of Mongolia and Inner Mongolia, China. The northwest and northeast part of the lake is swampy, and is flat in the rest part. This research paper reveals the lithology and some major elements content (SiO2, Al2O3, TiO2, Fe2O3, MgO, K2O, Na2O, MnO and P2O5) of the core sediments and their distribution along the depth and the Chemical Index of Alteration (CIA), which will be a significant factor in restoring environmental change. According to the data of analysis of major elements of Buir Lake sediments, the concentration of SiO2 ranges from 42.92 to 58.29%; Al2O3 = 9.25-12.83%; Fe2O3 = 3.66-4.79%; TiO2 = 0.46-0.62%; MnO = 0.08-0.13%; CaO = 5.73-11.56%; MgO = 1.34-1.81%; Na2O = 0.72-1.50%; K2O = 1.58-2.31%; and P2O5 = 0.14-0.26% respectively. The chemical index of alteration is basically the same as the distribution of SiO2, Al2O3, TiO2, Fe2O3, MgO, K2O and Na2O in the sediments of the lake, but their content at 32.5 cm interval of the core sharply decreases and also increases. This is perhaps due to global climate change. The content and distribution patterns of water-soluble elements, such as CaO, MnO, and P2O5, are negatively correlated with the chemical index of alteration. These lead to conclude that major elements of Buir Lake sediment and Chemical Index of Alteration are closely related to climatic changes in eastern Mongolia pertaining to the Upper Pleistocene and the Holocene epochs.https://www.mongoliajol.info/index.php/PMAS/article/view/2084buir lakemajor elementschemical index of alteration (cia)climatic change |
| spellingShingle | Oyunchimeg Tserentsegmid Davaadorj Davaasuren Lithology and the content of some major elements in the sediments of Buir Lake, East Mongolia Proceedings of the Mongolian Academy of Sciences buir lake major elements chemical index of alteration (cia) climatic change |
| title | Lithology and the content of some major elements in the sediments of Buir Lake, East Mongolia |
| title_full | Lithology and the content of some major elements in the sediments of Buir Lake, East Mongolia |
| title_fullStr | Lithology and the content of some major elements in the sediments of Buir Lake, East Mongolia |
| title_full_unstemmed | Lithology and the content of some major elements in the sediments of Buir Lake, East Mongolia |
| title_short | Lithology and the content of some major elements in the sediments of Buir Lake, East Mongolia |
| title_sort | lithology and the content of some major elements in the sediments of buir lake east mongolia |
| topic | buir lake major elements chemical index of alteration (cia) climatic change |
| url | https://www.mongoliajol.info/index.php/PMAS/article/view/2084 |
| work_keys_str_mv | AT oyunchimegtserentsegmid lithologyandthecontentofsomemajorelementsinthesedimentsofbuirlakeeastmongolia AT davaadorjdavaasuren lithologyandthecontentofsomemajorelementsinthesedimentsofbuirlakeeastmongolia |