types of meta rock
Foliated
Non Foliated
Contact metamorphism
Regional metamorphism
Meta rock
Formed from:
Changes in pressure, chem comp, tectonics
Foliated meta rock
Parallel layers of light/dark mineral streaks
Foliation is a common feat in metas
Non Foliated
No obvious orient of mineral layering.
Crystallized
Uniform color
Contact metamorphism
When magma intrudes rock.
Increase crystal size.
Form new material
Eg. Marble