In this area, you can see a lot of sedimentary rocks.

This mountain is made of igneous rock.

Smoking is considered a cause of carcinogenesis.

This area is rich in pitchstone.

I saw a Canada goose in the park.

Shale is one of the main sources of oil and gas.

This area is rich in shale.

This area is rich in porphyrite.

Her blue eyes are as deep and beautiful as the sea.

This rock is called eclogite and is formed under very high pressure.