World Tectonic Plate Boundaries — Map & Guide

Divergent boundaries — the Mid-Atlantic and East Pacific ridges are the clearest examples — are long, continuous lines, and the easiest to trace first since the surrounding plate outlines become obvious once drawn. Convergent boundaries are where one plate is destroyed beneath another, usually marked by an ocean trench — except for one striking exception: the Himalayan collision (the Indus-Tsangpo Suture Zone) has no trench at all, because it's continent colliding directly with continent rather than an ocean floor being subducted.

Transform boundaries neither create nor destroy crust, only shear it sideways, which is why most of them show up as short offsets stitching ridge segments together in a zig-zag — the San Andreas Fault is the unusual case of one long transform line rather than a series of short ones.

It's simply the trench line traced around the entire Pacific rim — the Aleutian, Japan, Philippine, Mariana, and Peru-Chile trenches strung together. Draw those five first and the earthquake/volcano clustering that gives the Ring of Fire its name becomes visible directly on the map, rather than a name to memorise separately. One thing worth noting: hotspots like Hawaii or Yellowstone don't appear on this map at all, since they sit in plate interiors, nowhere near a boundary — don't mistake a hotspot volcanic chain for a plate edge.