The Relationship between 234U/238U and Uranium Content of Saline Lakes in Northwestern China: A Case Study of the Carbonate Type Saline Lake in Inner Mongolia
详细信息
- 责任者：Han Jun (Key Laboratory of Uranium Resource Exploration and Evaluation Technology ; CNNC ; Beijing Research Institute of Uranium Geology ; Beijing 100029 ; China) ; Hao Weilin
- 刊名：Acta Geologica Sinica
- 出版年：2013
- 卷期：87(9)
- 关键词：盐湖 ; salt lakes ; 铀矿 ; uranium ores ; 二连盆地 ; Erlian Basin ; 鄂尔多斯盆地 ; Ordos Basin
- 页码：p.1447-1460
- 图表：12 illus., 4 tables, 27 refs.
- 分类号：1001
- issnNo：ISSN0001-5717
- isbnNo：CN11-1951/P
摘要
Through integrated researches on saline lake water and response sediments of uranium-bearing carbonate-type lakes in Erlian basin and Erdos Basin in northwest china,the authors refers that uranium in carbonate-type lakes derived from surrounding Mesozoic and Neozoic sediments leached by meteoric and underground water,showing characteristics of near and fast recharge uranium resources.The ~234U/~238U of lake brine and responding sediments is 0.8to 1.2,indicating uranium in enriched saline lake and the sediment are in relatively state.While the ~234U/~238U of U-bearing lake brine and responding sediments is inverse proportion to the uranium content(close to 1),and ranges between 0.9~1.5.Indoor lake water evaporation experiment suggests that ~234U/~238U value and uranium content of both relic water and sediments decrease as evaporation increases.Uranium occurs as uranylcarbonate and absorption mainly in saline sediments rich in organic and detritus components.~234U/~238U in both lake brine and sediments is one of the key proxies to indicate uranium content and sources of saline lake-type uranium resource.
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