adjective
- relating to or composed of peridotite, a coarse-grained igneous rock consisting mainly of olivine and pyroxene
Usage: geological
Examples
- The peridotitic mantle contains high concentrations of magnesium and iron.
- Scientists analyzed peridotitic xenoliths brought up by volcanic eruptions.
- The ocean floor shows evidence of peridotitic composition in certain areas.
- Peridotitic rocks are commonly found in ophiolite complexes.
- The diamond-bearing kimberlite contained peridotitic fragments from deep in the Earth.