Metamorphic Rocks: Formation, Parent Rocks, and Examples, Lecture notes of Geology

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Metamorphic Rock Examples

Quartzite

Tough building

material

Anthracite Coal

High quality,

creates lots of

energy when

burned

Metamorphic Rock: Slate

Used for: Billiards, chalkboards, roofs, floors

Metamorphic Rock Examples

Gneiss

Schist

Metamorphic Rocks are Formed

from Parent Rocks

(Parent Rock) Quartzite is the Metamorphic rock Sandstone is the Parent Rock

Parent rock of Marble

Limestone

Marble

Used For: Statues, buildings, countertops 

Metamorphic Rocks are Formed

from Parent Rocks

Parent Rock  The original rock material that forms metamorphic rock Example: 

Granite

Gneiss

Metamorphic Textures

 1. Foliated Rock 

Bands of minerals in

parallel layers

2. Non-foliated

Rock  Without

bands

Non-foliated Metamorphic Rock Examples:

Marble 

Quartzite 

Metamorphic Environments:

Form where there is HEAT & PRESSURE

Magma and Friction make HEAT

Collisions and Gravity produce PRESSURE

METAMORPHIC ROCK

 TEXTURES

 Foliated (mineral bands)  Non-foliated (no bands, grainy or smooth)

METAMORPHIC ROCK

 PARENT ROCKS

 Sandstone  Quartzite  Limestone  Marble  Shale  Slate  Granite  Gneiss

3 ROCK TYPES:

 Igneous-formed from the cooling and crystalization of magma  Sedimentary-formed by the compacting and cementation of layers of sediment  Metamorphic-formed by structural/chemical change due to heat and pressure