adjective
- of, relating to, or composed of anorthosite, a type of igneous rock consisting primarily of plagioclase feldspar
Usage: geology; technical
Examples
- The lunar highlands are dominated by anorthositic rocks.
- Anorthositic compositions are common in the Moon's crust.
- Geologists studied the anorthositic samples collected during the Apollo missions.
- The anorthositic terrain reflects sunlight differently than basaltic regions.
- This anorthositic intrusion formed during the early crystallization of the magma chamber.