What are factors that determine the resistance of the rock to denudation

Some of it has to do with the hardness of the rock. Sand is normally white or tan because silica is very hard and isn't broken down easily. Black sands or green sands made of olivine are rare because olivine is softer and the sand gets broken down faster or swept away.

Wind speed.

Ice wedging. In areas without snow, it take longer to break down than areas where water gets frozen in cracks and expands as it cools, breaking up rocks.

Examine factor resistance rock denudation