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What role does the Pacific Ring of Fire play in forming volcanic mountains?

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A car drives along the Trans-Canada Highway with Mount Sir Donald's sharp, snow-capped peak rising above forested slopes in the Selkirk Mountains, British Columbia. — mountain Mount Sir Donald in the Selkirk Mountains, British Columbia, looms above a segment of the Trans-Canada Highway.

The Ring of Fire is a major seismically active belt that plays a fundamental role in the formation of volcanic mountains through the process of plate tectonics.1

The primary mechanism driving this mountain building is subduction, where oceanic tectonic plates converge with and descend beneath continental or other oceanic plates. As a subducting slab reaches depths of approximately 100 km, it releases volatile components that trigger partial melting in the mantle wedge above it. This process generates magma, which rises to the surface to form a line of volcanoes.12

The resulting landforms vary based on the crustal setting:
* Island Arcs: When two oceanic plates converge, the rising magma creates a curved chain of volcanic islands, such as the Aleutian Islands or Japan.23
* Continental Volcanic Arcs: When an oceanic plate subducts beneath a continental plate, the magma rises through the thick continental crust to form inland volcanic mountain ranges, such as the Andes Mountains.2

Approximately 75 percent of the world’s volcanoes are located within this belt, making it the most significant region for volcanic mountain formation on Earth.1