Metamorphic Rock Flashcards
What is metamorphism?
Transition of one rock into another by temperatures and/or pressures
What are the types of metamorphism?
Contact metamorphism (heat)
Dynamic metamorphism (pressure)
Regional metamorphism (heat and pressure)
What are the agents of metamorphism?
Heat
Pressure & Stress
Fluids
Parent Rock
What are the two types of pressure?
Lithostatic pressure
Differential pressure
What is lithostatic pressure?
Weight of the overlying rocks
What is differential pressure?
Pressures that are not equal on all sides
What are the metamorphic textures?
Foliated
Non-foliated
What is texture?
Size, shape, & arrangement of mineral grains
What is foliation?
Planar arrangement of mineral grains (dominant forces in one direction, i.e. differential)
What are the types of foliated textures?
Slaty cleavage
Schistosity
Gneissic
What are types of foliated rocks?
Slate
Phyllite
Schist
Gneiss
What are the types of nonfoliated rocks?
Marble
Quartzite
What are the different metamorphic environments?
Continental
Transformational
Marine
