| 柴达木盆地西部卤水水化学特征与找钾研究 |
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| 关键词:western Qaidam Basin brines hydrochemical characteristics potash salt |
| 基金项目:国家自然基金项目(编号:40603007); 中国科学院重大基础研究前期研究项目(编号:2004CCA03500) |
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| Hydrochemical Characteristics of Brines and Potassium-Prospecting Researches in Western Qaidam Basin |
| From Mosozoic to Cenozoic,the Qaidam Basin around big mountains unceasingly rose and formed a deposition environment of "high mountain and deep basin",thus yielding abundant sources of salts.Under the extremely drought climate environment of Late Tertiary,wide and thick strata of salt rock accumulated in the west basin.Therefore,this basin has been regarded as an important and favorable area in search for potash ore(salt brine of rich potassium).Based on such an understanding,the authors collected some brine samples around several representative salt mines and analyzed their hydrochemical components so as to find some clues to potash deposits.The results indicate that brines are exclusively of chloride type and sodium sulfate sub-type,and the formation of brines seems to be attributed to eluviation brine of rock salt and deep circulatory brine.Their chemical components vary from place to place in the area,with relatively high contents of Br,B,Sr,K,etc.A comparison shows that the Nanyishan depression in western Qaidam basin has obviously higher Br,B3 ,Sr2 and Li than some other depressions.This area hence can be considered to be one of the most promising areas in search for potash ore(salt brine of rich potassium). |
| FAN Qi-chun,MA Hai-zhou,TAN Hong-bing,LI Ting-wei,XU Jian-xin.2007.Hydrochemical Characteristics of Brines and Potassium-Prospecting Researches in Western Qaidam Basin[J].Acta Geoscientica Sinica,28(5):446-455. |
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