Rock Scavenger Hunt

Igneous

• Rocks formed by magma that cools and solidifies.
• Extrusive- rocks that cool above the Earth's surface.
• Intrusive- rocks that cool below the Earth's surface.
• Examples: Coal and Halite

Sedimentary

• Many rocks compressed over time into one rock.
• Clastic- rocks from pieces of other rocks compacted.
• Chemical- rocks form from dissolved materials.
• Biochemical- organically made from plants and animals.
• Examples: Limestone, Hemate, and Fossils

Metamorphic

• rocks changed by extreme heat and pressure.
• Foliate- rocks produced by extreme heat and pressure. 
• Nonfoliated- rocks that do not have layers or a banded appearance.
• Examples: Marble, and Sandstone