Areas Affected by Karst and Pseudokarst

This chapter briefly discusses the presence of karst and pseudokarst in the US and worldwide. Soluble rocks exist at or near the surface over approximately 25 % of the US. If pseudokarst and deep conditions are included up to 75 % of the US may be affected. Similar conditions may exist worldwide. Knowing where these conditions exist will help in the planning and management for land use, groundwater resources, mineral resources and unique habitats.