5.2 Igneous Rocks

(imported from quizlet)

igneous rock

rock type that forms when molten material solidifies

magma

molten rock that is inside of the Earth

plutonic

rock that formed deep within the Earth

intrusive

below Earth's crust

lava

molten rock that is outside of the Earth

volcanic

rock that formed on the Earth's surface

extrusive

above Earth's crust

felsic

light colored rocks that have a high aluminum (Al) content and silicon (Si)

mafic

dark colored rocks that have a high iron (Fe) or magnesium (Mg) content

vesicular

texture that consists of gas pockets that give the appearance of having holes