The Pacific Ring of Fire


 

Ring of Fire: The Pacific "Ring of Fire" is a zone of frequent earthquakes and volcanic eruptions that encircles the basin of the Pacific Ocean. It is shaped like a horseshoe and it is 40,000 km long. It is associated with a nearly continuous series of oceanic trenches, island arcs, and volcanic mountain ranges and/or plate movements. It is sometimes called the circum-Pacific belt or the circum-Pacific seismic belt.

 


 

**Illustrations by the USGS

 

The World’s Active Volcanoes


 



 

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