No. A volcano is a vent or fissure in a planetary crust. The volcano itself is a geologigal structure and integral part of the north american plate.
A hotspot is what lies under that volcano and thereby under the north american plate.
However, those areas are not reachable by submarine (or any human vehicle at this point in time or the past). And that was the original commenter’s point. There is no “under a continent” for a submarine.
Well… beneath North America is a massive super volcano, so…
No. A volcano is a vent or fissure in a planetary crust. The volcano itself is a geologigal structure and integral part of the north american plate.
A hotspot is what lies under that volcano and thereby under the north american plate.
However, those areas are not reachable by submarine (or any human vehicle at this point in time or the past). And that was the original commenter’s point. There is no “under a continent” for a submarine.