Topps has created some of the hobbyâs most iconic football cards, including almost all of those that would be on the list of the most valuable and popular ever issued. From 1956-63 Topps enjoyed a virtual football card monopoly (with the exception of 1961).
1 Volcanic mountains-Mountains that are caused by volcanic activity are called volcanic mountains. 2  There are two main types of volcanic mountains: volcanoes and dome mountains. 3  Volcanoes are formed when magma erupts all the way to the surface of the Earth. 4  The magma will harden on the Earth's surface, forming a mountain.
As magma migrates away from the melting zone, it slowly cools off. As it does, more and more solid mineral grains crystallize until eventually all of the melt is gone. Sometimes, magma will get close enough to the surface to feed volcanic eruptions. But most of the time, the magma cools and crystallizes below ground, forming intrusive igneous rocks. Huge masses of igneous rocks are called 'plutons.' When plutons are uplifted during tectonic plate collisions, then eroded by wind and water and ice, they are revealed to us in the rugged topography of the world's mountain ranges.