摘要
根据水量平衡关系和氢氧同位素分析,结合水文地质、地质构造等条件,发现阿尔山玄武岩地下水接受外源水补给,补给源区可能为西藏高原。由阿尔山河水、湖水的^(87)Sr/^(86)Sr值可知,地下水中的锶来自玄武岩,推断地下水的导水通道为连续的玄武质导水通道,低黏性的碱性玄武质熔岩流在冷却过程中形成连续的收缩缝,最终演变为管道型导水通道;西藏高原的渗漏水经过熔岩管道快速向东部地区排泄,西部地幔岩石圈增厚可能与地下水的跨流域补给有关。
Based on the water balance relationship and hydrogen and oxygen isotope analysis,combined with the hydrogeology condition and tectonic geological structure condition,it is found that the groundwater in basalts of Arshan is recharged by exogenous water,and the recharge source area may be the Tibetan Plateau.The ^(87)Sr/^(86)Sr ratio of the river and lake water in the Arshan indicates that the strontium in the groundwater comes from the basalt.It is inferred that the groundwater conduiting channel is a continuous basaltic conduit.The low-viscosity alkaline basaltic lava flows form continuous contraction joints during the cooling process,and finally evolve into a pipeline conduiting channel.The leakage water of the Tibet Plateau is rapidly drained to the eastern region through the lava pipeline and the thickening of the mantle lithosphere in the west may be related to the inter basin recharge of groundwater.
作者
陈建生
王文凤
马芬艳
CHEN Jiansheng;WANG Wenfeng;MA Fenyan(College of Civil and Transportation Engineering,Hohai University,Nanjing 210098,China;School of Earth Science and Engineering,Hohai University,Nanjing 210098,China)
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2021年第3期249-256,共8页
Journal of Hohai University(Natural Sciences)
基金
中央高校基本科研业务费重点支持专项(2018B48814)
国家重点研发计划(518056012)。
关键词
玄武岩地下水
氢氧同位素
水量平衡
岩浆活动
导水通道
阿尔山玄武岩
basalt groundwater
hydrogen and oxygen isotopes
water balance
magmatism
conduiting channel
basalts in Arshan
