应用^(14)C测年法确定太原市东山岩溶水年龄  

The Age Determination of Karst Water in Dongshan Mountain of Taiyuan City by ^(14)C Dating Method

作　　者：蔡旭梅 冯雁飞 CAI Xumei;FENG Yanfei(The 2rd Exploration Team,Zhejiang Coal Geological Exploration Team,Hangzhou,Zhejiang 310000;The 3rd Geological Brigade of Zhejiang Province,Jinhua,Zhejiang 321000)

机构地区：[1]浙江煤炭地质局勘探二队,浙江杭州310000 [2]浙江省第三地质大队,浙江金华321000

出　　处：《中国煤炭地质》2023年第2期47-52,共6页Coal Geology of China

摘　　要：东山岩溶水系统是兰村泉域的重要组成部分,查明其补给、径流、排泄关系,对兰村泉域水资源开发利用与保护有重要的指导意义。根据地质构造、地下水流场,将东山岩溶水系统划分为补给-径流区、转换带和汇水区。采集了岩溶水^(14)C样品,根据测试值计算了系统内岩溶水年龄,并分析了其整体分布特征及成因。选取了5条具有代表性的路径,分析在径流过程中岩溶水年龄的变化过程。结果显示:从补给区到汇水区岩溶水年龄逐渐增大,在转换带由于现代水通过范庄断裂的补给,其年龄减小,接近现代水。将系统岩溶水划分为杨兴河补给-径流区、乌河补给-径流区、现代水补给区、大盂盆地汇水区及阳曲盆地汇水区。据此,将东山岩溶水系统分为杨兴河岩溶水子系统与乌河岩溶水子系统。Dongshan karst water system is an important part of Lancun spring area.It is important to find out the relationship of recharge,runoff and drainage for the exploitation and protection of water resources in Lancun spring area.According to geological structure and groundwater flow field,Dongshan karst water system is divided into recharge runoff area,transition zone and catchment area.On this basis,^(14)C samples of karst water are collected,and the age of karst water in the system is calculated by the test values,and the overall distribution characteristics and causes are analyzed.Five representative paths are selected to analyze the change process of karst water age in the process of runoff.The results show that the age of karst water increases gradually from recharge area to catchment area.In the transition zone,the age of modern water decreases due to the supply of modern water through Fanzhuang fault,which is close to modern water.Karst water in the system can be divided into Yangxing River recharge runoff area,Wuhe River recharge runoff area,modern water recharge area,Dayu Basin catchment area and Yangqu Basin catchment area.Accordingly,Dongshan karst water system is divided into Yangxinghe karst water subsystem and Wuhe karst water subsystem.

关 键 词：东山岩溶水系统 ^(14)C 岩溶水年龄 岩溶水子系统 

分 类 号：P641.134[天文地球—地质矿产勘探]