dolerite
/ˈdɑl.ə.raɪt/
noun
- A dark, coarse-grained igneous rock, similar to basalt, often used in construction or as a source of crushed stone.
- Geologists identified the dark gray rock as dolerite from its crystal structure.
- The old wall was built from blocks of dolerite quarried nearby.
- Crushed dolerite is commonly used as a base material for roads and railways.
Synonyms