Using this ability, Mark will be capable of creating a variety of rocks and stones of all different types and sizes. He will also be able to move stones telekinetically. However, he will not be able to manipulate any form of broken down earth or soil, nor manipulate tectonic movements. He also will not be able to affect things associated with rocks, such as rock music or rock cakes, though when he first manifests he will try to do so, claiming that it ought to be possible.