| Answer | Crossword Clue |
|---|---|
| BASALT | Dark volcanic rock |
| BASALT | Dark-colored volcanic rock. |
| BASALTIC | Of a dark, volcanic rock |
| andesitic | dark-colored volcanic rock composed essentially of plagioclase feldspar and one or more mafic minerals, as hornblende or biotite |
| andesites | dark-colored volcanic rock composed essentially of plagioclase feldspar and one or more mafic minerals, as hornblende or biotite |
| andesite | dark-colored volcanic rock composed essentially of plagioclase feldspar and one or more mafic minerals, as hornblende or biotite |
