So it’s unlikely to erupt. Rhyolitic magma, on the other hand, is much thicker and more resistant to flow. Underneath Yellowstone, basaltic magma heats the surrounding rock to help create this ...

The caldera-forming eruptions at Yellowstone are sourced from reservoirs of rhyolitic melt. That's silica-rich magma, the volcanic equivalent of granite, sticky and viscous and slow-moving ...

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 ...