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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.
Answers. Best Answer: The mountains are of three types in principle: 1- formed by accumulation, 2- Formed by denudation, and 3- formed by sudden vertical movements of earth crust.All other types are a combination of two or more of the three types mentioned so far. 1- accumulation type-This group has volcanic mountains.These are built up layer upon layer of The lava deposits on the existing slopes. they are sub classified into acidic or non acidic lava types.- Denudation type-This type mostly occur in sedimentary regions. The pre existing sedimentary layers and strata undergo differential erosion carving vast sediments and leaving sculpted out mountains. Himalayas, Alps are chains of such numerous mountains.