noun
- plural of gabbro; coarse-grained igneous rocks composed mainly of plagioclase feldspar and pyroxene
Usage: geology
Examples
- The geologist collected samples of various gabbros from the outcrop.
- These gabbros formed deep within the Earth’s crust millions of years ago.
- The dark-colored gabbros contrasted sharply with the lighter granite formations.
- Ocean floor gabbros provide important clues about seafloor spreading.
- The mining company discovered rich deposits of gabbros in the mountain range.
- Students examined thin sections of gabbros under the microscope.