Answer SHALE – Crossword Puzzle Solver
| clue | answer | length |
|---|
| ___ oil | SHALE | 5 |
| Fine-grained sedimentary rock | SHALE | 5 |
| It's formed by clay hardening | SHALE | 5 |
| Most common sedimentary rock | SHALE | 5 |
| Possible source of petroleum | SHALE | 5 |
| Product of mud compaction | SHALE | 5 |
| Rock made from layered mud | SHALE | 5 |
| Rock often containing quartz | SHALE | 5 |