Identifying Metamorphic Rocks

Foliated rocks are classified based on ____ and ____.

• composition

• foliation

• grain size

• origin

Non foliated rocks are classified based on ____ and ____.

• grain size

• foliation

• composition

• origin

What are the four main types of foliated metamorphic rock?

• Slate

• Gneiss

• Phyllite

• Hornfels

• Schist

What are some common examples of non foliated metamorphic rocks?

• Gneiss

• Hornfels

• Marble

• Amphibolite

• Quartzite

Slate has:

• slaty cleavage

• phyllitic sheen

• schistosity

• banding

Phyllite has:

• slaty cleavage

• phyllitic sheen

• schistosity

• banding

Schist has:

• slaty cleavage

• phyllitic sheen

• schistosity

• banding

Gneiss has:

• Slaty cleavage

• Phyllitic sheen

• Schistosity

• Banding

Which metamorphism causes cleavage planes to develop?

• Regional

• Contact

• Dynamic

Which of the following is true for foliation?

• Foliation is a result of compressive forces.

• Mineral crystals elongate perpendicular to the compressive force.

• Foliated rocks contain platy minerals that align along a preferred orientation.

• Contact metamorphism creates foliation.