| Answer | Crossword Clue |
|---|---|
| siltstones | SILTSTONE, a rock formed of hardened silt |
| siltstone | a rock formed of hardened silt |
| shaley | a fissile rock that is formed by the consolidation of clay, mud, or silt, has a finely stratified or laminated structure, and is composed of minerals essentially unaltered since deposition |
| shalier | a fissile rock that is formed by the consolidation of clay, mud, or silt, has a finely stratified or laminated structure, and is composed of minerals essentially unaltered since deposition |
| shaly | a fissile rock that is formed by the consolidation of clay, mud, or silt, has a finely stratified or laminated structure, and is composed of minerals essentially unaltered since deposition |
