Distribution Characteristics of Hydrogen and Oxygen Isotopic Compositions and ¹⁴C Ages in Confined Water of Yinchuan Plain

• 责任者：Jia Xiumei (Institute of Hydrogeology and Environmental Geology ; CAGS ; Shijiazhuang 050061 ; China) ; Sun Jichao
• 刊名：Geoscience
• 出版年：2009
• 卷期：23(1)
• 关键词：放射性碳计时 ; radiocarbon dating ; 承压水 ; confined water ; 宁夏 ; Ningxia
• 页码：p.15-22
• 图表：8 illus., 3 tables, 10 refs.
• 分类号：1701
• issnNo：ISSN1000-8527
• isbnNo：CN11-2035/P

With the application of hydrogen and oxygen isotopes (²H, ³H and ¹⁸O) and carbon isotope (¹⁴C), the recharge and renewability of confined water in Yinchuan Plain have been analyzed.  Forty five groups of confined water samples have been collected in the plain for isotope analysis. The analysis results show that the distribution characteristics of hydrogen and oxygen isotopes (²H, ³H and ¹⁸O) and carbon (¹⁴C) possess very good consistency, revealing the regional regularities of recharge and flow, and local change features of confined water in the study area. ¹⁴C dating results indicate that the age of confined water is within the range of 3 000 to 22 290 a. Correcting ¹⁴C age has been calibrated by Tamers and Gonfiantinie models, and the results have been compared.