Rocks and Minerals

The three types of rocks based on their geologic origin

Igneous, sedimentary, metamorphic

Igneous rocks

Rocks or minerals solidified from molten material

Sedimentary rocks

Rocks formed from deposited sediment that are buried and hardened through compaction over time

Metamorphic rocks

Rocks of one form that are converted to another through intense heat and pressure without melting

Examples of sedimentary rocks

Sandstone and limestone

Examples of igneous rocks

Granite and basalt

Examples of metamorphic rock

Marble and quartzite