Download Types of Rocks Notes

Name: ___________________________________ Date: ____________ Period: __________
Types of Rocks Notes
I. Igneous Rocks
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Extrusive igneous rocks- formed by cooling lava
– Texture:
• glassy (_______________)
• porous (______________)
• fine-grained (________________)

Intrusive igneous rocks- formed by cooling magma
– Texture:
• coarse-grained (______________)
II. Sedimentary Rocks
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Formed by:
Weathering (breaking down of rock)
Erosion (movement of sediments)
Deposition (collection of sediments)
Compaction & Cementation
Examples of Mechanical Weathering: ___________, ___________, ___________
Example of Chemical Weathering: _______________
Five Agents of Erosion:
____________, ____________, ____________, ____________, ____________
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Types of Sedimentary Rocks (categorized by composition)
o Clastic Rocks (___________________)
• Conglomerates (pebbles)
• Sandstones (sand)
• Shales (mud & clay)
o Organic Rocks (____________________)
• Ex: limestone (__________), coal (____________)
o Chemical Rocks (_________________)
• Ex: rock salt, limestone, geodes, gypsum
III. Metamorphic Rocks
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Formed by tremendous heat & pressure, and chemical reactions inside the crust.
Formed from all three rock types.
 Types of Metamorphic Rock
o Foliated (______________________)
 Ex: schist, slate, gneiss
o Unfoliated (____________________)
 Ex: marble and quartzite