西藏盐井地区地下热水水化学特征差异分析  

An analysis of the hydrogeochemical characteristics for the hot underwater in Yanjing of Tibet,China

作　　者：漆继红[1] 许模[1] 张强[1] 覃礼貌[1] 江凯[1] 钱琳[1] 

机构地区：[1]成都理工大学"地质灾害防治与地质环境保护"国家重点实验室,成都610059

出　　处：《成都理工大学学报（自然科学版）》2008年第5期580-585,共6页Journal of Chengdu University of Technology: Science & Technology Edition

摘　　要：在对西藏盐井地区地质环境条件调查基础上,通过深入研究盐井盐泉、曲孜卡泉的地球化学特征,基本查清了两类泉水的形成和其补、径、排模式之间的差异。西藏盐井乡盐泉以深层卤水形式赋存于上三叠统波里拉组-夺盖拉组(T3b-T3d),出露于芒康-盐井复式向斜次级背斜被澜沧江切割处,其元素离子系数具大气溶滤水特征;而其北面的曲孜卡泉出露处属于竹卡-起塘牛场断裂通过区,泉中稀碱金属含量异于盐井盐泉,且F-偏高,其形成具有花岗岩的元素特征。这些差异表明二者的补、径、排系统彼此独立,使其表现出的地球化学特征有如此明显差异。Based on the research of the geological environment of the Yanjing area in Tibet and the hydrogeochemical charcteristcis of the Yanjing salt spring and Quzika spring, this paper discusses the different formation pattern and supply runoff drainage systems of the two kinds of springs. The salt spring appears at the infall of the Mangkang Yanjing double syncline and Lancang River. Its temperature is about 40℃, and the highest temperature can reach 62℃. Its supply water is atmospheric precipitation leaching water and stores in the strata of Upper Triassic Bolila Formation and Duogaila Formation, showing that the water comes from far areas and goes through deeply. While, the Quzika spring appears in the area which the Zuka-Qitang-Niuchang fracture zone goes through. Its temperature is higher than that of the salt spring, and the highest temperature can reach 71℃. The F^- content is high, showing the element characteristic of granite in the west of the fracture zone. It can be concluded from these differences that the two kinds of springs have their own supplyrunoff drainage systems which make such evident difference between them.

关 键 词：温泉 大气溶滤水 化学特征系数 诺瓦克水化学系数 

分 类 号：P641.12[天文地球—地质矿产勘探]