nonmetamorphic
/nɑnˌmɛtəˈmɔrfɪk/
adjective
- Not changed by heat or pressure into a different rock type; not metamorphic.
- The region's nonmetamorphic rocks contain many fossils.
- Unlike slate, limestone is nonmetamorphic unless it is heated.
- Sandstone is a nonmetamorphic sedimentary rock.
Antonyms