Describe why volcanoes have formed in the Mojave Desert.

the molten iron core and the thin crust at the surface there is solid body of rock called the mantle and when rock form the mantle melts moves to the surface through the crust

here's my answer

Explanation:

Weathering and erosion of tuff forms hoodoos (irregularly-shaped rock spires) along Wild Horse Canyon near Hole-In-The-Rock. In the past, massive explosive volcanic eruptions (called ignimbrites) produced thick blankets of volcanic tuff that covered large portions of the Mojave region.