河北平原地下水^(14)C年龄新认识  

New understanding of ^(14)C age of groundwater in the Hebei plain

作　　者：武金博[1] 周爱国[1] 蔡鹤生[1] 李小倩[1] 

机构地区：[1]中国地质大学环境学院,武汉430074

出　　处：《水文地质工程地质》2007年第5期43-45,62,共4页Hydrogeology & Engineering Geology

基　　金：中国地质调查局地质调查综合研究项目(200320150002);国家自然科学基金项目(40372112)资助

摘　　要：本文对河北平原第四系地下水14C年龄最新的结果进行了分析,得出如下认识:(1)垂向上,地下水的14C年龄随深度的增加而增大,或者沿地下水的流向而增大。但是,在同一孔组中,地下水埋深大于300m时出现了混乱现象。地下水14C年龄不但不增大,反而减小,其原因复杂;(2)水平方向上,第三含水组Q2地下水较老的年龄出现在河北平原中部,大致与子牙河方向一致,而第四含水组Q1地下水较老的年龄则呈北东东方向展布,即沧州—歧口一线分布,可能是地质结构影响所致。In this paper, the latest results of ^14C age of groundwater in the Hebei Plain are analyzed. The understanding is as follows ： （ 1 ） Vertically, the ^14C age of the groundwater increases as the increasing depth or along the flow path of groundwater. However, in the same hole group, the result is confused when depth to the groundwater level deeper than 300 m. The ^14C age of the groundwater has not increased, but decreased. The reasons for this are complicated ; （2） horizontal, in the 3rd aquifer group Q2, the older groundwater is in the center Hebei plain, generally in a line with the direction of the Ziya River. In the fourth aquifer group Q1, the older groundwater extends in a NEE direction from Cangzhou to Qikou, possibly due to the special geological structure.

关 键 词：^14C年龄 河北平原 地下水 

分 类 号：P641.13[天文地球—地质矿产勘探]