Planetary geosciences division

From Memory Alpha, the free Star Trek reference

The planetary geosciences division is a subdivision of the sciences division within Starfleet.

Lt. Commander Brad Yacobian and Lieutenants Michael Stradling and Alan Sims served onboard the USS Voyager in the planetary geosciences division. (VOY: "Parturition")

If the planetary geosciences division mirrors the branch of science on Earth known as Earth science, members of this division may specialize in the physics, geology, geography, meteorology, mathematics, chemistry and biology of planets.