Soda lakes and origin of their trona deposits on the Nei Mongol Plateau of China

Sun Dapeng

doi:10.1007/BF02843817

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Soda lakes and origin of their trona deposits on the Nei Mongol Plateau of China

OriginalPaper | Updated：2023-05-16

- Soda lakes and origin of their trona deposits on the Nei Mongol Plateau of China
- Soda lakes and origin of their trona deposits on the Nei Mongol Plateau of China
- 海洋湖沼学报（英文） 1987年5卷第4期页码：351-362
- Affiliations：
  
  Qinghai Institute of Salt Lake
- Author bio：
- Funds：
- DOI：10.1007/BF02843817
  中图分类号：
- 纸质出版：1987
- Accepted：
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Soda lakes and origin of their trona deposits on the Nei Mongol Plateau of China[J]. 海洋湖沼学报（英文）, 1987,5(4):351-362.

Dapeng, S. Soda lakes and origin of their trona deposits on the Nei Mongol Plateau of China., Chin. J. Ocean. Limnol. 5, 351–362 (1987). https://doi.org/10.1007/BF02843817
Soda lakes and origin of their trona deposits on the Nei Mongol Plateau of China[J]. 海洋湖沼学报（英文）, 1987,5(4):351-362. DOI： 10.1007/BF02843817.

Dapeng, S. Soda lakes and origin of their trona deposits on the Nei Mongol Plateau of China., Chin. J. Ocean. Limnol. 5, 351–362 (1987). https://doi.org/10.1007/BF02843817 DOI：

摘要

Abstract

The Nei Mongol (Inner Mongolia) Plateau is one of the most important salt lake areas in China. Its trona deposits are well known in the world. The soda lakes spread mainly over the northern part of the Ordos Basin

the central part of the Eren Basin

the southeastern part of the Hailar Basin and the Badain Jaran Desert are generally several to several dozen square kilometers

and surrounded by sand dunes. The salinity of soda lake brines is 200–350 g/l

the pH values

9.09–10.67. The brines mainly consist of Na(K)

SO4

CO3

and HCO3 of the Na(-CO3-SO4-Cl) type. Trona deposits in soda lakes on the plateau always occur in “bull’s eye pattern” and are usually in two layers of natron

mirabilite

halite and trona interbedded with black mud containing much illite clay and some gayllussite

dolomite and calcite. Commonly

the soda lakes on the plateau were formed on the depressions from the beginning of early Holocene

but the trona deposits were mainly precipitated under the low temperature in Mid-Holocene (as proved by our freezing experiments and sporo-pollen analysis).

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references

Baker b. H., 1958. The geology of magadi area.Rep. Geol. Surv. Kenya. No. 42.

Dong, Guangrong et al., 1983. The case study of the vicissitude of Mu Us sandy land since the Late Pleistocene according to the Salawusu River strata.Journal of Desert Research.3(2): 9–14. (In Chinese with English abstract)

Eugster, Hans P., 1980. Geochemistry of evaporitic lacustrine deposits.Ann. Rev. Earth Planet Sci. 8: 35–63.

Huang, Qi et al., 1981. The14C age and cycle of sedimentation of some saline lakes on the Qinghai-Xizang Plateau.Kexue Tongbao. 26(1): 66–70

Reading, H. G. (ed.), 1978. Sedimentary Environments and Facies. Blackwell Scientific Publications, Oxford London Edinburgh Melbourne. pp. 68–71.

Sun, Dapeng, et al., 1984. The origins of borates in saline lakes, Qinghai-Xizang Plateau.Acta Sedimentologica Sinica.2(4): 111–128. (In Chinese with English Abstract)

Valyashko, M. G., 1965. The Geochemical Regularity for the Formation of Potash Ore Deposits (In Chinese edition). Chin. Indus. Press. pp. 11–13.

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