CFC_S法在鄂尔多斯白垩系地下水盆地浅层地下水年龄研究中的应用  

Application of CFC_S Methods in Dating Shallow Groundwater in the Ordos Cretaceous Groundwater Basin

作　　者：柳富田[1] 苏小四[1] 侯光才[1] 林学钰[1] 易树平[1] 董维红[1] 

机构地区：[1]吉林大学环境与资源学院/水资源与环境研究所,长春130026

出　　处：《吉林大学学报（地球科学版）》2007年第2期298-302,共5页Journal of Jilin University：Earth Science Edition

基　　金：中国地质调查局地质调查计划项目(12120103302-ZT2);教育部博士点基金项目(20030027020)

摘　　要：鄂尔多斯白垩系地下水盆地是中国重要的能源基地,利用CFCS方法对鄂尔多斯白垩系地下水盆地年轻地下水年龄进行测定,取得了比较准确的结果。结果表明,盆地地下水系统可以分为局部地下水系统、中间地下水系统和区域地下水系统。地下水盆地内局部地下水系统地下水循环更替快,年龄为20 a左右,地下水年龄随深度增加而增加;中间地下水系统和区域地下水系统地下水循环更替相对较慢,年龄大于70 a,可以寻求14C等其他同位素方法确定准确年龄。The Ordos Cretaceous Groundwater Basin is an important energy basin of China. The CFCS method is applied in the Ordos Cretaceous Groundwater Basin to determine the young groundwater age and the exact results have been derived. It can be concluded that the Cretaceous Groundwater Basin can be divided into local groundwater system, middle groundwater system and regional groundwater system. The cycle rate in the local groundwater system is fast and the age is about 20 years old, which increases with the depth. The cycle rates of the middle groundwater system and the regional groundwater system are relatively slow, which ages are older than 70 years, and the correct ages can be derived from other isotopes such as ^14 C.

关 键 词：鄂尔多斯白垩系地下水盆地 浅层地下水 CFCS 地下水年龄 

分 类 号：P641.3[天文地球—地质矿产勘探]