Metamorphic Rocks Flashcards
1
Q
metamorphism
A
a change to the mineralogy, composition or structure of a rock by heat and/or pressure
2
Q
metamorphic facies
A
a set of mineral assemblages associate in space and time
3
Q
metamorphic grade
A
intensity of metamorphism
4
Q
mineral zone boundaries
A
index minerals and the notion of progressive metamorphism
5
Q
2 types of stress
A
1) confining pressure
2) directed pressure
6
Q
types of metamorphism
A
contact - heat source is intrusion
regional - heat source is mantle
7
Q
2 principle types of metamorphic rock
A
foliated
non-foliated
8
Q
4 types of foliated rocks
A
slate
schist
gneiss
others (eclogite, granulite)
9
Q
non-foliated rocks
A
form by recrystallization of pre-existing minerals or formation of new ones due to high temp
- ex: quartzite, marble
