SEDIMENTARY ROCK
A rock formed when sand and minerals are cemented together.
A rock formed when groups of rocks are changed by heat and pressure
Metamorphic rock
A rock formed when magma solidifies
Igneous rock
Rocks made up of layers like a book
Foliated rocks
Most common igneous rock
Basalt
Most common sedimentary rock
Shale
When rocks are changed into new rocks through heat and pressure in one location
Regional metamorphism
Igneous rock that forms when magma cools underground.
Intrusive rock
Chemical sediments formed from evaporation of water
Concretions
Igneous rock with smooth glass-like texture
Obsidian
Organic, sedimentary rock used for fuel
coal
The change of one type of rock into a new rock
Metamorphism
Magma cooled quickly leaving no crystal formation.
Amorphous
Igneous rock formed when magma cools above the ground.
Extrusive rock
A well-known chemical sedimentary rock
Limestone
Substance crushed to make glass
Sandstone
Rocks baked by contact with magma to form new rocks
Contact metamorphism
Rocks with a smooth glass-like texture
Amorphous
Rocks used for fuel and are made from organic material
Fossil fuel
The layer of solid rock below the soil
Bedrock
Rock made of smooth pebbles in hardened clay or soil
Conglomerate
The most well known metamorphic rock
Marble
Magma that cools slowly at first, then begins to cool rapidly forming both small and large crystals.
Porphyritic
Single layer of sedimentary rock
Stratum
Rocks that can’t be separated into thin layers
Non-foliated rocks