Rhyolite is a thick ... be up to 105 cubic miles of molten rock in the crust beneath northeastern Yellowstone. This is equivalent to the volume of magma released roughly 1.3 million years ago ...

However, neither of these processes would change the chemical composition of the magma if the new material added is the same as the existing one. Rock analysis compilations show that rhyolite and ...

Rhyolitic magma, on the other hand, is much thicker and more resistant to flow. Underneath Yellowstone, basaltic magma heats the surrounding rock to help ... If the rhyolite does erupt, Bennington ...