Metamorphic Rock

Metamorphic rocks are rocks. . .

That have changed because of changes in temperature and pressure or the presence of hot fluids

Temperature increases with depth, which causes melting Different temperatures create different types of metamorphic rock

Metamorphic Rock

Any type of rock can become metamorphic… Igneous/sedimentary/other metamorphic

Classified in 2 ways: Foliated Non-foliated

Foliated Metamorphic Rocks Line up in parallel layers

Example: shale turns into slate

Example: granite turns into gneiss

Does not have layering

Example: sandstone turns into quartzite

Non-Foliated Metamorphic Rocks

Example: limestone turns into marble

Foliated or Nonfoliated?

Foliated (Schist)

Foliated or Nonfoliated

Nonfoliated (Marble)

Foliated or Nonfoliated

Foliated (Phyllite)

Wrap Up Questions…

Q: What type of rock can turn into a metamorphic rock?

A : Any type… igneous/sedimentary/other metamorphic rocks

Wrap Up Questions…

Q: metamorphic rock is created because of _____ and _______.

A: Heat and Pressure

Wrap Up Questions…

Q: How are metamorphic rocks classified?

A: Foliated and Non Foliated

Wrap Up Questions…

Q: ______ rock are banded or layered where ______ are not.

A: foliated nonfoliated

Now we will practice classifying!