摘要
本文根据河北平原地下水锶同位素比值等测试结果讨论了其演变特征:除个别水点外,地下水锶同位素比值均大于现代海水的均值(0.709073),第四系地下水的锶同位素比值均大于热水点值,且随着埋深的增大、沿迳流途径从补给区到排泄区系统增大,这同锶同位素比值与碳-14年龄呈正相关关系是一致的。本文根据锶同位素比值及锶离子浓度特点将该区地下水分三类进行了分析。在平原中部,呈NE—SW方向,出现了一个锶同位素比值的高值带,大致与子牙河的流向一致,即献县—青县一线。该资料为河北平原第四系地下水演化提供了新的证据。
Data of ^87 Sr/^86Sr ratio of groundwater samples from an aquifer in the Hebei plain are presented in this paper. Characteristics of the occurrence of Sr isotopes in the groundwater are discussed. Except some individual samples, the ^87 Sr/^86 Sr ratios are higher than that of the modern mean sea water and also higher than that of the hot water sample. The groundwater from the Quaternary sediments （Q4 - Q1 ） in the plain shows a systematic increase in ^87 Sr/^86 Sr ratio with the increasing depth and distance from the recharge area to the discharge area of the plain, which is coincident with the 14 C age. Characteristics of ^87Sr/^86Sr ratio and Sr^2 ＋ of the ground ^87Sr/^86Sr ratios zone expanding from NE to SW appears in the central area of the approximately along the Ziya river. The research results offer some new evidence to the in the Quaternary sediments in the Hebei Plain.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2007年第4期41-43,60,共4页
Hydrogeology & Engineering Geology
基金
中国地质调查局地质调查专题研究项目"地下水数值模型
同位素技术研究"(2003201500002)
关键词
锶
^87Sr/86Sr
地下水
Sr
^87 Sr/^86Sr
groundwater water is discussed. A higher Hebei plain, which extends evolution of the groundwater
