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›› 2016, Vol. 33 ›› Issue (3): 403-411.DOI: 10.7523/j.issn.2095-6134.2016.03.018

• Research Articles • Previous Articles     Next Articles

Hydrogochemical characteristics of thermal spring group in typical karst region

LEI Kun1, HE Shouyang1,2, AN Yanling1,2   

  1. 1. Key Laboratory of Karst Environmentand Geohazard Prevention of Ministry of Education, Guizhou University, Guiyang 550025, China;
    2. College of Resources and Environmental Engineering,Guizhou University,Guiyang 550025, China
  • Received:2015-07-10 Revised:2015-11-23 Online:2016-05-15

Abstract:

Karst thermal spring group in Shiqian county has a high commercial value due to the rich minerals and trace elements. The water chemistry data in different periods are collected and analyzed to study hydrogochemical characteristics of the thermal spring group in Shiqian county. The results indicate that Ca2+and Mg2+ are the major cations and the major anions are SO2-4 and HCO-3. The thermal springs are alkaline water and recharged by precipitation. The hydrochemical types are SO4 ·HCO3-Ca ·Mg, HCO3 ·SO4-Ca ·Mg, and HCO3-Ca ·Mg. Water chemistry types of thermal spring group are controlled by the water-rock interaction in the process of precipitation infiltration into deep water cycle. The thermal spring of the HCO3-Ca · Mg type is predominated by carbonate minerals dissolution, and the HCO3 · SO4 -Ca · Mg or the SO4 · HCO3-Ca · Mg types are controlled by the dissolution of sulfate evaporates in karst aquifer.

Key words: thermal spring group, karst, hydrogeochemistry, Shiqian county

CLC Number: