This is chemical weathering. Carbonic acid (and often sulphuric acid from SO2) destroy CaCO3 (limestone) through chemical attack.Carbonic acid is formed by reaction of H2O and CO2 to create H2CO3.
Carbonic acid reacts chemically with limestone, which is observed as weathering. As such, carbonic acid weathering is a chemical, not physical, change.
Carbon dioxide dissolved in water is a cause of chemical weathering.
another gas found in air, carbon dioxide, also causes chemical, weathering. Carbon dioxide dissolves in rainwater and in water that sinks through air pockets in the soil. The result is a weak acid called carbonic acid. Carbonic acid easily weathers rocks such as marble and limestone.
it is formed by carbonate rock and slightyly acidic water
In all limestone caves, the same as as is "evident" - by the cave's very existence - as in all the limesrtone caves and other karst features in your country - chemical weathering! (Dissolution by carbonic acid.)
The dissolution of limestone by rainwater containing carbonic acid is the perfect example of chemical weathering.
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Principally chemical as the limestone is dissolved by carbonic acid (rain-water acidified by absorbed atmospheric CO2). As the cave develops mechanical weathering of its stream-passages may contribute, by abrading the rock with sand carried in the stream.
Carbonic acid
Carbonic acid reacts chemically with limestone, which is observed as weathering. As such, carbonic acid weathering is a chemical, not physical, change.
No. It dissolves limestone slowly. It may take centuries for a limestone outcrop to show visible weathering.
Chemical Weathering
Carbon dioxide dissolved in water is a cause of chemical weathering.
Karst topography is usually created by dissolved limestone. Therefore, limestone makes up Karst topography.
Karst topography is formed by chemical weathering, and affects the underlying carbonate rock (limestone or dolomite). This occurs under specific drainage conditions. Slightly acidic water (carbonic acid in solution) is the active agent.
Groundwater dissolves limestone, which causes sinkholes to form
The forests that grows over the limestone forms mulch that produces the acid required. That's true but the prime solvent is Carbonic Acid: atmospheric carbon dioxide dissolved into rain-water.