how does oxygen cause chemical weathering

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Oxidation

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Oxygen directly participates in the chemical weathering of rocks through the process of oxidation. In this process, oxygen reacts with a substance within the rock and forms oxides which will result in weathering. The most common example of chemical weathering through oxidation is the rusting of iron.

In this process, oxygen reacts with a substance within the rock and forms oxides which will result in weathering. The most common example of chemical weathering through oxidation is the rusting of iron. Any rock containing iron or iron minerals undergoes a slow breakdown this way. The resulting product is typically iron (III) oxide.

Chemical Weathering From Water. Water causes both mechanical weathering and chemical weathering. Mechanical weathering occurs when water drips or flows over rock for prolonged periods; the Grand Canyon, for example, was formed to a large degree by the mechanical weathering action of the Colorado River.

Chemical weathering is the break down of rocks by chemical mechanisms. The main agents of chemical weathering are Water, Oxygen, Carbon dioxide and Acid rain. What are three things that can cause chemical weathering?