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通过沃卡温泉出露特征、水化学及同位素组成调查,结合温泉发育的地质背景,研究沃卡温泉的水文地球化学特征和成因。研究表明沃卡温泉出露呈北东向带状展布,明显受断裂控制,温泉水化学类型为Cl·SO_4-Na和SO_4·HCO_3-Na型,阳离子成分为Na+为主,阴离子以Cl~-、SO_4~(2-),pH8.31~8.56,偏碱性,矿化度249.3~366.6mg/l,δD(‰)-150~-157.2,δ18O(‰)-18.3~-22,揭示温泉来源于大气降水补给,补给高程在5 000~5 300m之间。地球化学温标估算沃卡温泉热储温度155℃。泉类型主要为断裂深循环型,沃卡温泉热源主要为深循环地热增温。
Based on the investigation of the characteristics of Ouka Hot Spring, the hydrochemical and isotopic compositions, and the geological background of hot spring development, the hydrogeochemical characteristics and causes of the Waka Hot Springs are studied. The results show that the Ouka Hot Spring has a north-easterly zonal distribution and is obviously controlled by faults. The chemical types of hot spring water are Cl · SO 4-Na and SO 4 · HCO 3-Na, the main cation is Na +, the anion is Cl ~ , SO_4 ~ (2 -), pH8.31 ~ 8.56, alkaline, salinity 249.3 ~ 366.6mg / l, δD (‰) -150 ~ -157.2 and δ18O (‰) ~ 18.3 ~ -22, Sourced from the atmospheric precipitation recharge, supply elevation of 5 000 ~ 5 300m. Geochemical temperature scale estimates Warka Springs thermal storage temperature of 155 ℃. The main types of springs are deep-cycle fractures, and the hot springs of Woka Hot Springs are mainly geothermal heating in deep circulation.