Where do volcanic mountains occur?

Continents float like giant icebergs atop the upper mantle. The uppermost mantle is composed of a rigid lithosphere and below it is a molten asthenosphere. read more

Volcanic mountains form as lava oozes forth from cracks in the earth. The lava builds up around the area where the eruption occurred. Layers build upon layers and over a period of time, a volcanic mountain forms. read more

This is how the continuous mountain chain around the Pacific Ocean known as the"Ring of Fire" came to be-- a subduction zone creating magma chambers in the upper mantle, from the tip of South America north to the Cascade Mountains and the Aleutian Islands of Alaska, then running south through Japan, Southeast Asia, and continuing as far south as New Zealand. read more

Volcanic “mountains” are formed from the accumulated ejecta and lava that emerge from the cone or caldera of the volcano. A volcanic mountain range (such as the Cascade Mountains) can form over the continental crust astride a subduction zone, where low density remelt magma rises up through to crust to erupt as volcanos. read more