| Geological depression |
| Geological formation |
| A unit of geological time |
| A billion years, geologically |
| Geological age |
| Deposits from a geological epoch |
| Geological movement of land masses |
| Geological epochs |
| Geological epoch in which mammals arose |
| Grand Canyon geological group |
| Recent, in geological terms |
| Geological extent |
| Fracture-revealing photo |
| Geological ridge |
| Geological layer that's about 1,800 miles thick |
| Largest geological division |
| Geological sample |
| 365 billion days, geologically |
| Searched for fractures |
| Geological time spans |
| Geological time period that underwent a name change |
| Geological areas |
| Geological times |
| Geological seven |
| Geological feature on a Utah license plate |
| Geological time |
| Geological period |
| Geological period (Var.) |
| Geological time period |
| At least two geological eras |