Catastrophic subsidence into sinkholes tends to occur more often in areas underlain by ________________.

Question

Quizplus · Accepted Answer

Catastrophic subsidence into sinkholes tends to occur more often in areas underlain by acidic freshwater flowing through limestone because the water dissolves the limestone, creating underground cavities and eventually causing the overlying land to collapse. Basic water does not have the same effect on limestone, and saltwater tends to dissolve other types of rock, such as sandstone.

Catastrophic Subsidence into Sinkholes Tends to Occur More Often in Areas