1. IGNEOUS ROCKS
INTRODUCTION

4. Igneous Rocks Definition
Rocks Formed From Molten Material.

5. Igneous Rock Agenda Topics Formation of Igneous Rocks
Classification of Igneous Rocks

6. Formation of Igneous Rocks
Source
Molten Rock
Composition
(3 Components)
Liquid
Solid
Volatiles
Creation
Juvenile Material
Remelting Rock
Water/Volatile Addition
Roll of Temperature and Pressure
Location
Beneath Surface (Intrusive)
Magma
Very-slow cooling
Large Crystals
At Surface (Extrusive)
Lava
Slow cooling
Small Crystals
Above Surface (Extrusive)
Pyroclastics
Very-fast cooling
Exposure to air
Exposure to water
No Crystals

7. Classification of Igneous Rocks
Classification (2 Criteria)
Composition
Ultramafic
Mafic
Intermediate
Felsic
Texture
Phaneritic
Aphanitic
Prophyritic
Pegmatitic
Glassy
Vesicular
Pyroclastic

8. THE END