Igneous Rocks Chap. 5 What are igneous rocks? Identifying igneous rocks.
Igneous Rocks. Igneous rock definition Rocks formed by the cooling and solidifying of molten...
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Transcript of Igneous Rocks. Igneous rock definition Rocks formed by the cooling and solidifying of molten...
Igneous rock definition
• Rocks formed by the cooling and solidifying of molten materials. Igneous rocks can form beneath the Earth’s surface from magma, these are intrusive igneous rocks
• Or on the earths surface from lava, these are extrusive igneous rocks
Igneous Rock characteristics
• Texture: Very Course, Course, Fine, Glassy, Vesicular and non-vesicular
• Color: Light or Dark• Density: High or Low• Composition: Felsic Al, Si or Mafic Fe, Mg
• If a Rock is Dark in color it will also have a Mafic composition and a High density.
• If a rock is Light in color it will also have a felsic compostion and a Low density