Acid rain causes erosion by chemically reacting with certain minerals in rock, causing it to dissolve in the water and otherwise escape the structures in which it is bonded. This is a particularly a problem with limestone and rocks derived from it, such as marble. The basic constituent of limestone is calcium carbonate, which is very vulnerable to acidic compounds.Know More
Acid rain is created when industrial and other modern processes release sulfur compounds into the atmosphere. These react with water, creating sulfuric acid, the major active constituent of acid rain. This dissolved acid is carried with rain onto limestone or marble, and the calcium carbonate in the rock reacts with it. This reaction generates water, carbon dioxide, calcium ions and sulfate ions. All these products are then carried away with the flowing rainwater. This both erodes natural and man-made structures made of limestone, and depletes soil of important calcium compounds.
Acid rain also harms the environment in other ways. Acid rain accumulates in bodies of water, such as lakes, making them more acidic. This can make lakes so acidic they no longer support most fish and other types of organisms. In addition, the dissolution of calcium and other compounds in soil can release toxic aluminum and other ions into the environment.Learn more about Erosion & Weathering
Chemical erosion occurs when water transports dissolved minerals away from their source rocks. It follows chemical weathering, which results from the chemical alteration of rock by water. Chemical erosion is most common with limestone; slightly acidic rainwater dissolves calcium carbonate in the rock and redeposits it, sometimes far away, as in stalagmites and stalactites. Through oxidation, chemical erosion also occurs to some degree with unstable igneous minerals and iron-rich rocks.Full Answer >
The three major types of erosion are the transporting of soil or rocks by moving water, wind or ice. Water is the primary force behind erosion. The waves of the ocean, movement of a river and falling of rain are all ways water transports materials from one location to another.Full Answer >
Freeze-thaw weathering is a form of physical or mechanical weathering that induces stress on rocks when water repeatedly seeps into cracks, freezes and expands, eventually causing the rock to break apart. This type of weathering is largely driven by the intensity and frequency of freeze-thaw cycles and the structural properties of the rocks subject to weathering.Full Answer >
Heat, gravity, wind and running water are all causes of erosion. Each process works differently and is affected by circumstances, such as location and climate.Full Answer >