Granite is an example of intrusive igneous rock. Intrusive indicates that the magma was forced close to the surface, but then cooled more slowly underneath the surface. When lava erupts from a ...

A recent study has mathematically clarified how the presence of crystals and gas bubbles in magma affects the propagation of ...

the rock starts to get gooey — a reservoir of solid crystals with a mixture of lava melt and bubbles that form as the magma releases gases. New magma comes in from the bottom of the system.

Mount Etna in Sicily, Italy, is an example of a composite volcano ... vents in explosive eruptions. When magma erupts from a volcano it is called lava. This mixture of lava and gas flows out ...

The lava is also flowing at shallow depths that fueled prior eruption. Through modeling, the researchers determined the magma cap consists of molten silicate materials and supercritical water ...

Geoscientists discovered a magma cap acting as a "lid" 2.4 miles beneath Yellowstone. This magma cap traps heat and pressure, but also allows gas to vent, reducing eruption risk. Seismic imaging ...