| Clue | Source | Date |
|---|---|---|
| Of the science of rocks | The Telegraph Cross Atlantic | 21 Apr 2025 |
| Of Earth's crust | ||
| Looking at Earth's structure, ... study | ||
| Founded-in-1842 federal agency, ___ Survey of Canada | ||
| Love, for instance -- revolutionary sound of old rock | The Telegraph Cryptic | 25 Aug 2023 |
| Travel round earth at first — rational in terms of earth science? | ||
| Of the science of rocks | The Telegraph General Knowledge | 20 Dec 2015 |
| Of the study of rocks. |