Metamorphic Rocks Flashcards
rocks that have been altered or transformed in the solid state due to changes in pressure, temeprature conditions
Metamorphic Rocks
it is like the chameleon changing its color to protect itself by blending into its environment
Metamorphism
Formation of Metamorphic Rocks
- Recrystallization
- Neomorphism
- Metasomatism
occurs when small crystals of one minersl will slowly convert to fewer, larger crystals of the same mineral without melting the rock
Recrystallization
the process whereby minerals not only recrystallize but also form different minerals from the same chemical elements
Neomorphism
addition or loss of elements new minerals form with only some of the original elements
Metasomatism
Types of Metamorphic Rock
Contact metamorphism
Regional metamorphism
Foliated metamorphic rocks
Nonfoliated metamorphic rocks
occurs only at a local area adjacent to large intrusions and along fractures that are in contact with hot fluids
Contact metamorphism
occurs when there are major igneous intrusions, presence of extreme pressure and heat due to deep burial.
Regional metamorphism
formed when parallel planes of platy or elongated minerals creating what is called as FOLIATIONS
Foliated metamorphic rocks
do not have layered appearance. Examples are: marble, quartzite, and anthracite
Non-Foliated Metamorphic rocks
shows that all rocks are related to each other
Rock Cycle
illustrates the relative stability or weathering rate of numerous minerals
Goldich stability series
