
Stuart, this is Bert
from the Caltech GEOLOGY lab
The Big Bang Theory Season 10, Episode 6

to the GEOLOGY lab
or the chemistry lab.
The Big Bang Theory Season 7, Episode 3

Geology isn't a real science!
The Big Bang Theory Season 5, Episode 1

Geology. Oh!
The Big Bang Theory Season 7, Episode 20

We are directly underneath
the GEOLOGY lab,
The Big Bang Theory Season 5, Episode 17