basaltic rock
nounUK /bəˈsɔːltɪk rɒk/
US /bəˈsɔːltɪk rɑːk/
Basaltic rock is a dark, hard rock that comes from volcanoes.
The beach was covered in black basaltic rock from an old volcano.
RELATED WORDS
OTHER MEANINGS
2. Rock formed from cooled lava that is rich in iron and magnesium.
Scientists studied the basaltic rock to learn about the volcano's history.
3. A type of stone used for building and road making.
The path was paved with crushed basaltic rock.
4. Dark rock found on the ocean floor.
Basaltic rock makes up much of the sea floor.