He is a world-renowned geologist.

Geologists believe that this area was formed by a graben.

He likes to think deeply.

In my area, a summer festival is held every year.

The geology of this area is very unique.

The formation of a mountain requires millions of years.

He formed a new team.

He is a world-renowned scholar.

He is majoring in geology.

Geology is a study that elucidates the history of the Earth.