Metamorphic Rocks

6. – a fine-grained metamorphic rock formed mainly by contact metamorphism.
9. – the process by which rocks are altered by heat, pressure, or fluids without melting.
10. metamorphism – metamorphism affecting large areas due to high pressure and temperature during mountain building.
12. – a rock showing characteristics of both metamorphic and igneous rocks due to partial melting.
13. – a hard metamorphic rock formed from sandstone.
15. – the process by which minerals change in size and shape during metamorphism without melting.
17. – a metamorphic rock characterized by abundant flaky minerals arranged in layers.
18. – the alignment of minerals into parallel layers or bands in a metamorphic rock.
19. – a metamorphic rock formed from the recrystallization of limestone.

1. – a fine-grained metamorphic rock formed from shale.
2. – a fine-grained metamorphic rock with a silky sheen, intermediate between slate and schist.
3. – a force that compresses rocks and contributes to metamorphic changes.
4. rock – a rock formed when existing rock is changed by heat, pressure, or chemically active fluids.
5. rock – the original rock from which a metamorphic rock forms.
7. – a factor that causes minerals within a rock to change during metamorphism.
8. – describing a metamorphic rock that lacks visible layers or bands.
11. – a coarse-grained metamorphic rock with distinct light and dark mineral bands.
14. – a metamorphic rock composed mainly of amphibole and plagioclase minerals.
16. metamorphism – metamorphism caused by heat from nearby molten magma.