Traction: What to Expect. The specifics of the traction therapy a person receives depends on the source of pain in their neck and spine. In most cases of mechanical traction, 7 to 10 pounds of weight will be applied for a half-hour, often two or three times daily.
Sandstone (sometimes known as arenite) is a clastic sedimentary rock composed mainly of sand-sized minerals or rock grains. Most sandstone is composed of quartz and/or feldspar because these are the most common minerals in the Earth's crust.
Sandstone, simply put, is sand cemented together into rock - this is easy to tell just by looking closely at a specimen. But beyond that simple definition lies an interesting makeup of sediment, matrix and cement that can (with investigation) reveal a great deal of valuable geologic information.