An experimental study of mixture corrosion effects of carbonate rocks in the transitional zone of littoral karst areas

The mechanism for development of littoral karst differs from that of inland karst, and the mixture corrosion effects are one of the most important fac tors that control the development of littoral karst. Through seven groups o f static experiments carried out in a closed CO2-H2O system, basic conclusi ons can be drawn as follows: (1) the basic law of corrosion process in a tr ansitional zone of seawater-freshwater in littoral karst areas is identical with that in the fresh water, i.e., die lithologic characteristics and roc k structure are the main factors which control the development of littoral karst; (2) the mixture corrosion rate of the carbonate rock in the above tr ansitional zone is faster than that in fresh water or seawater; (3) the mec hanism for development of carbonate rocks differs at various pressures of C O2 a transitional zone in littoral karst areas.