What Causes Weathers Marble And Limestone

It slowly erodes away the surface over very long periods of time.

What causes weathers marble and limestone.

Chemical weathering causes rust on some rock. Limestone areas are predominantly affected by chemical weathering when rainwater which contains a weak carbonic acid reacts with limestone. Release of pressure exfoliation. Carbon dioxide from the respiration of animals and ourselves is one cause of increased carbon dioxide in the atmosphere.

In exposed areas of buildings and statues we see roughened surfaces removal of material and loss of carved details. Mechanical weathering causes rock to flake off. Weathering is the breakdown of rock by physical chemical or biological processes. Mechanical weathering roots pry apart and cracks in rocks.

Stone surface material may be lost all over or only in spots that are more reactive. Even natural rainwater is usually slightly acidic but many parts of the world especially urban and industrial areas have significant amount of nitrogen oxides and sulphur oxides as gases mostly from man ma. When it mixes with rain water will create carbonic acid rain which weathers marble and limestone so carbonic acid weathers marble and limestone. The video in figure 2 shows how acid rain weathers limestone.

This causes the limestone to dissolve. When sulfurous sulfuric and nitric acids in polluted air and rain react with the calcite in marble and limestone the calcite dissolves. This makes weak sulphuric acid h 2 so 4. Chemical weathering weathers marble and limestone.

Rain water h 2 o in the clouds dissolves some of the so 2 a pollutant from industrial manufacturing. In simple terms acid rain is a weak sulphuric acid and this is a significant cause of chemical weathering. What causes weathers marble and limestone.