| Answer | Crossword Clue |
|---|---|
| LAVA | Basalt base |
| ROCK | Basalt. |
| LAVA | Basalt |
| MAGMA | Basalt, once |
| LAVAS | Basalt sources |
| LAVA | Basalt source |
| LAVA | Basalt, once |
| TRAP | Basalt, for instance. |
| LAVA | Source of basalt. |
| VOLCANICROCKS | Basalt and pumice |
| LAVA | Source of basalt |
| AUGITE | Component of basalt. |
| ROSETTASTONE | Inscribed basalt tablet |
| IGNEOUS | Like basalt and obsidian |
| IGNEOUS | Like granite and basalt |
| THEROSETTASTONE | Basalt slab, erected 195 B. C., found 1799 A. D. |
