| Clue | Source | Date |
|---|---|---|
| Branch of geology (10) | ||
| Geology branch | ||
| Study the author's diary hidden in beam | ||
| Rock expert's field | Newsday | 29 Aug 2017 |
| One girl, May, works in a branch of earth sciences | The Telegraph Cryptic | 03 Feb 2017 |
| Rock-studying person who digs a record by Yes | ||
| It involves the study of cleavage | ||
| It involves the study of cleavage |