Sandstone: Rock for Crack Climbing. Sandstone is a sedimentary rock, a rock type that encompasses a wide variety of characteristics and is deposited directly on the earthâs surface. Roughly 75% of the earthâs land surface is covered with some type of sedimentary rock. Sedimentary rocks like sandstone form when minute rock particles, often from granite, are deposited by wind and water on earth surfaces.
8. 1  Other Causes. 2  Diabetes causes arms or hands and feet to fall asleep even when one is awake and relaxed. 3  Hand surgery and arthritis damage or irritate the nerves.
Well, If you experience that your arm falls asleep while sleeping, then you are probably sleeping in a wrong position. Here are some more causes of this problem and easy remedies to cure it. Leg or arm falling asleep is a common problem, which most of you might have experienced a number of times. You might suffer from this anytime, but it is most probable while you rest. You experience a tingling sensation and you are just unable to move your arms or legs.