• 责任者：Mao Xumei (School of Environmental Studies ; China University of Geosciences ; Wuhan 430074 ; China) ; Liang Xing
• 刊名：Advances in Earth Science
• 出版年：2011
• 卷期：26(4)
• 关键词：氦—氦计时 ; He-He dating ; 深层水 ; deep-seated water ; 河北 ; Hebei Province
• 页码：p.417-425
• 图表：3 illus., 1 table, 38 refs.
• 分类号：1701
• issnNo：ISSN1001-8166
• isbnNo：CN62-1091/P

Groundwater age is an important hydrogeologic parameter for it reveals the circulation and renewal ability of groundwater. There has been great discrepancy to deep groundwater age of North China Plain dating with different isotopes, as the precision and range are disagreed to different isotopes with different half-lives when groundwater is dated. Though ⁴He is applied in dating groundwater, it still need to recognize the variety of ⁴He sources. Deep groundwater samples were collected along Baoding to Cangzhou profile in North China Plain, and the concentrations and isotopic composition of noble gas were measured. It showed good renewal ability of deep groundwater to the directions of Baoding-Renqiu and Huanghua Cangzhou with the ⁴He accumulation age no more than 2 ka and 20 ka respectively, but there were almost no renewal in southeast Dacheng for where the ⁴He accumulation age of deep groundwater became much older than that somewhere else abnormally. Therefore, deep groundwater will descend continually near Dacheng when Renqiu funnel and Cangzhou funnel keep extended. hemas-microsoft-com:office:office" />