The yellow-red stains that occur on some rock surfaces are the result of ________which is a form of________ weathering.

Question

Quizplus · Accepted Answer

The yellow-red stains indicate the presence of iron oxides, which are formed through the chemical reaction of iron minerals with oxygen in the air (oxidation). This is a type of chemical weathering, not physical weathering. Hydration refers to the absorption of water into minerals, which can also lead to weathering, but it is not the process responsible for the stains in question.

The Yellow-Red Stains That Occur on Some Rock Surfaces Are