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The Guardian - AU
The Guardian - AU
World
Sharlotte Thou

What is the ring of fire – explained in 30 seconds

Mount St Helens, which lies on the ring of fire
Mount St Helens, which lies on the ring of fire. Composite: Getty Images

The ring of fire is a 40,000km long horseshoe shaped belt that wraps around the Pacific Ocean.

The ring, also known as the Circum-Pacific Belt, is home to 75% of the world’s active volcanoes, and 90% of its earthquakes. Many of the world’s most powerful earthquakes have occurred along this zone, including the 1960 Valdivia Earthquake, which had a magnitude of 9.5 on the moment magnitude scale, and the 1964 Alaska Earthquake, with a magnitude of 9.2.

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