This mountain is made of phonolite.

This rock is jyamongan, in other words, serpentinite.

This building is made of granite.

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.