- Karstification is the geologic process of differential chemical and mechanical erosion by water on soluble bodies of rock, such as limestone, dolomite,
gypsum, or salt, at or near the Earth4s surface. Karstification is exhibited best on thick, fractured, and pure limestones in a humid environment in which the subsurface and surface are being modified simultaneously. The resulting karst morphology usually characterized by dolines (sinkholes), hums (towers),
caves, and a complex subsurface.