| Answer | Crossword Clue |
|---|---|
| SHALE | Layered fissile rock |
| SHALE | Fissile rock. |
| SHALE | Fissile rock |
| SHALY | Resembling fissile rock. |
| SHALY | Containing fissile rock. |
| GNEISS | Layered rock |
| SHALE | Layered rock |
| SHALE | Thin-layered rock |
| SHALE | Thin layered rock |
| SHALE | Fragile layered rock |
| SHALE | Thin-layered sedimentary rock |
| SHALY | Like some layered rock |
| SHALE | Rock made from layered mud |
| SHALE | Rock-made from layered mud |
