5.2: Igneous Rock
- Page ID
- 22629
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The temperature of magma can range between about 800\(^{\circ}\) and 1600 \(^{\circ}\)C depending on where within the mantle the magma forms. Magma can either cool slowly within the crust (over centuries to millions of years)—forming intrusive igneous rock (also called plutonic rock), or erupt onto the surface and cool quickly (within seconds to years)—forming extrusive igneous rock (also called volcanic rock). Intrusive igneous rock typically crystallizes at depths of hundreds of meters to tens of kilometers below the surface.