Water Chemistry and Age Dating of Thermal Spring in Chullabukdo Region

전라북도 온천수의 수질 화학적 특성과 연대 측정

  • 김종훈 (전주대학교 이공대학 화학과) ;
  • 최용욱 (전주대학교 이공대학 화학과)
  • Published : 19960200


The chemical characteristics and age dating of the thermal springwater developed recently in Chullabukdo were investigated. The temperature range of the thermal springwater was found 27∼29$^{\circ}C$, indicating a low temperature thermal springwater. The concentration of $F^-$ ion in the springwater was found relatively high in the range of 2∼3 ppm, but $NO_3^-$ ion was nearly not detected. The concentration range of $SO_4^{2-}$ ion was 0.02∼23 ppm, among which $SO_4^{2-}$ content of $Y_3$ was found very high compared to that of other springwater, since this site is known as a sulfur spring. $HCO_3^-$ ion content was found 2∼5 times higher than that of groundwater. $Y_1,\;Y_3,\;Y_5,\;Y_2,\;Y_4,\;and\;Y_8$, were classified as $HCO_3^-$ type, $Y_6$ as $CI^-$type, and $Y_7$, as no domonant type by classification diagram for anion and cation facies. From the results of age dating on the basis of the mean tritium level of precipitation and thermal springs, $Y_1$ was identified as the oldest thermal spring (-89 years) and $Y_7$ was identified as -89 years and $Y_7$ was -1 year using dispersive model. The results calculated by two models agreed well each other.



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