noun
- a dark, coarse-grained igneous rock composed mainly of plagioclase feldspar and pyroxene
Usage: geology
Examples
- The geologist identified the dark rock sample as gabbro.
- Gabbro forms when magma cools slowly beneath the Earth’s surface.
- The mountain’s core consists primarily of gabbro and other igneous rocks.
- Students learned to distinguish gabbro from granite by its darker color and mineral composition.
- The quarry produces gabbro for use in construction projects.
- Gabbro is the intrusive equivalent of basalt.