8.4 Metamorphic rocks Flashcards
1
Q
how are metamorphic rocks formed?
A
when existing rocks are changed by heat or presure
2
Q
Regional metamorphic
A
-Altered by heat and presure
-Occurs over a large area
-formed by coliding plates or rocks being buried
3
Q
Contact Metamophic
A
-Altered by heat
-Occures in smaller areas
-Forms by Hot magma entering or contacting the rock
4
Q
Dynamic Metamorphic
A
-Altered by presure
-Occures in smaller areas
-Forms when rocks scrape or colide past each other
