What percentage of earthquakes and volcanoes have occurred on or near plate boundaries?
- Atarah DerekLv 74 weeks ago
Earthquakes - Over 90%, according to the USGS.
Volcanoes - 99%*
*Technically, Iceland doesn't count, as it's actually the result of a hotspot, not the spreading of the Mid-Atlantic Ridge. The ridge just allows the hotspot to grow a large island very quickly.Source(s): https://pubs.usgs.gov/gip/earthq1/where.html
- BillLv 64 weeks ago
that is where they all occur-- where the plates crush against each other