Predominantly.... Convergent Boundary.
The boundry type that adds to the lithospere is the Divergent boundry.
Many of the volcanoes around the Ring of Fire are stratovolcanoes.
volcano
volcano
Fire type pokemon. Like charmander.
Convergent plate boundary.
A country border.
Several plate boundaries compose the Ring of Fire, but the main boundaries that surround the Ring of Fire are ocean-continent convergent boundaries and ocean-ocean convergent boundaries.
Nippon
porceiln
The Pacific Ring of Fire consists of numerous plate boundaries. Most of the volcanic activity is along convergent boundaries.
transformation boundries