The Used - rocks that have formed by consolidation of organic or inorganic solid fragments, carried by, suspended in, or droppped by wind, water, or ice and deposited in layers. The Rock Cycle - how each rock type comes into existence, highlighting in which province each can be found. Rock made up of minerals in a clearly crystalline state. Igneous and metamorphic rock, as opposed to sedimentary rock. An intrusive rock body that is substantially wider than it is thick.
Dikes are often steeply inclined or nearly vertical.
Also known as as a scarp. When they broke up, or rifted apart, the Iapetus Ocean was formed where that Atlantic Ocean would be 900 million years later. The Greek god Iapetus was the father of Atlas, namesake of the Atlantic.