basalt
Pronunciation
Noun
B1 Intermediate
Quick answer
A dark, fine-grained volcanic rock formed when lava cools quickly.
Test yourself
Which word fits the gap? "The cliffs along the coast are made of black _____ formed by ancient lava flows."
Answer: basalt
In your own words, what does "basalt" mean?
A dark, fine-grained volcanic rock formed when lava cools quickly.
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