GEOL1001 Rocks
Igneous rocks
Dr Péter Horváth
, Igneous rocks
• Igneous (made by “fire”) -
Solidified from molten rock
(i.e., magma)
,Three Classes of Rocks
, Igneous Rocks: FIRE ROCKs
• Igneous rock forms when magma cools and makes crystals.
• Magma is a hot liquid made of molten minerals.
• When magma pours onto the Earth’s surface it is called lava.
• Igneous rock can form below surface, where the magma
cools slowly. Or, igneous rock can form on the surface, where
the magma cools quickly.
Igneous rocks
Dr Péter Horváth
, Igneous rocks
• Igneous (made by “fire”) -
Solidified from molten rock
(i.e., magma)
,Three Classes of Rocks
, Igneous Rocks: FIRE ROCKs
• Igneous rock forms when magma cools and makes crystals.
• Magma is a hot liquid made of molten minerals.
• When magma pours onto the Earth’s surface it is called lava.
• Igneous rock can form below surface, where the magma
cools slowly. Or, igneous rock can form on the surface, where
the magma cools quickly.
