Question

The layers of the Grand Canyon are "rust" colored because the air has changed the composition of iron in the soil to iron oxide. What kind of weathering is this?

Image reference
A.
Carbonation which is a type of Physical Weathering

B.
Oxidation which is a type of Chemical Weathering

C.
Frost wedging which is Chemical Weathering

D.
Abrasion which is Physical Weathering

Answers

GPT-4o mini
The correct answer is:

**B. Oxidation which is a type of Chemical Weathering**

Oxidation involves the reaction of oxygen with minerals, such as iron, resulting in the formation of iron oxides (rust), which gives the layers of the Grand Canyon their characteristic "rust" color.