Basalt is a commonly used term in geology; it helps to know basic geology vocabulary. The geologist explained that basalt forms the bedrock beneath the soil.
Pro Tip 2/3
Physical Characteristics
Basalt has a fine-grained texture; it may help to visualize its smooth surface. Upon close examination, one can see the fine-grained texture of the basalt rock.
Pro Tip 3/3
Visual Imagery
Use words that evoke imagery, like 'Dark, igneous rock' to describe basalt's appearance. The island's shore is lined with dark, igneous basalt that cooled from molten lava.