Lecture 3.1 - Metamorphic Rocks

Question 1

Define foliation

Answer 1

Parallel orientation of flaky minerals
Process of splitting into thin sheets

Question 2

Definition of metamorphic rocks

Answer 2

Preexisting rocks that have gone through high pressure and temperature

Question 3

Schist rock characteristics

Answer 3

Foliated
Coarse grained (size)
Parent rock: shale

Question 4

Slate rock characteristics

Answer 4

Foliated
Fine grained
Parent rock: shale

Question 5

Gneiss rock characteristics

Answer 5

Banded
Dark layers are banded
Light layers are crystalline
Parent rock is shale

Question 6

Define crystalline texture

Answer 6

Similar grains that interlock like a jig-saw puzzle

Question 7

Marble rock characteristics

Answer 7

Contains calcite
Soft
Each grain breaks on a cleavage
Fizzes
Parent rock: Limestone

Question 8

Quartzite rock characteristics

Answer 8

Contains quartz
Hard
Semiconchial flakes breaking across boundary
Parent rock: quartz sandstone

Question 9

Migmatite

Answer 9

Special geniss
Where melting begins
When a rock begins to have little bless of melt in it