- Hydration often produces a new mineral compound that is larger than the original compound. the increased size expands the rock and can lead to decay

- Hydration can also lead to colour changes in the weathered rock changes.

- Once hydration begins, it accelerates other weathering processes and may also be accompanied by hydrolysis and oxidation.

- Hydration often produces a new mineral compound that is larger than the original compound. the increased size expands the rock and can lead to decay

- Hydration can also lead to colour changes in the weathered rock changes.

- Once hydration begins, it accelerates other weathering processes and may also be accompanied by hydrolysis and oxidation.