Fault-block mountains may form where faulting happens. You know that during faulting, rocks break into blocks at a fault. The blocks may move in several ways along one or more faults to form mountains. Most fault-block mountains appear to form at converging and diverging boundaries. However, mountain-building also happens at sliding faults. The mountains may split and slip sideways, like a stack of books falling to side.
Learn about another type of mountain formed by lava:
Learn about another type of mountain formed by lava: