Sinkholes form when water erodes the supporting bedrock away. They are more common in areas where carbonates, including dolomite and gypsum, formed as water evaporated to create bedrock.Continue Reading
Carbonates are highly soluble in acidic aqueous solutions, including acid rain. Acid rain causes channels to form within the bedrock and subsequent rainfall continues the erosion process. As channels grow larger, some combine until the underlying structure collapses. Without the support of bedrock, the upper layers of soil collapse into the hole, forming the sinkhole.
One area that sinkholes are common is Florida, because of the abundance of marshlands and frequent rains. However, sinkholes do form in many areas across the United States.Learn more about Erosion & Weathering
The Qattara Depression in Egypt is the largest sinkhole in the world, at approximately 80 kilometers long and 120 kilometers wide. It is a desert sinkhole, and it was created naturally over millennia by the strong winds that blow across the salt beds at the base of the hole.Full Answer >
According to CK-12, ice wedging causes rocks to weather because water expands as it changes from a liquid form to a solid form. Over time, the changes in form wedge the rock apart. For this reason, ice wedging is very effective at weathering rock.Full Answer >
Soil erosion is a natural or artificial process where the top layers of soil are blown or washed away from wind or water. Most soil erosion is caused by natural sources like wind and rain.Full Answer >
Erosion is caused by water, wind and ice. All types of rock and soil are affected by erosion. It is a natural process, although it can be influenced by the actions of people.Full Answer >