Sinkholes and karst topography are a clear indication that ______.
A) there is nothing unusual; these features occur everywhere there is fast motion of groundwater in the subsurface
B) the groundwater is moving through cracks in the rock
C) the groundwater is moving through a limestone and forming caves that periodically collapse
D) the area has been subjected to past meteorite bombardments and groundwater is moving through the fractured rock

Question

Quizplus · Accepted Answer

Sinkholes and karst topography are formed in areas where the groundwater is moving through water-soluble rock such as limestone or dolomite. The water dissolves the rock and forms underground channels and caves, which can eventually lead to collapse of the surface above. This process is common in areas with this type of geology and can be indicative of potential hazards for construction and development.

Sinkholes and Karst Topography Are a Clear Indication That ______