What kind of fault does Yellowstone Caldera have?

Question

I have this science project and i'm trying to find the fault, type of fault and the plate boundary.

Answer 1

There is not traditional plate tectonic fault under Yellowstone, but that region is full of small Quaternary faults associated with large supervolcano.  This supervolcano is one of the Earth’s deep mantle hot spot according to some scientists.   Other studies indicate it as an old fault that was part of Farallon Plate which is now subducted under North American Plate.  It is believed that this hot spot is responsible for creating large Columbia River Basalt west from Yellowstone.  As the Northern American Plate moved westward, it moved over this hotspot to the present location under Yellowstone.

Answer 2

there isn't one.  It is an intra-plate hot spot.