6) Metamorphism Flashcards
0
Q
Heat
A
(200-900•C), causes mineral reactions and coarsening
Ex: muscovite -> orthoclase + water + corundum
1
Q
Agents of metamorphism
A
Heat, pressure and Hydrothermal solutions
2
Q
Pressure
A
Causes mineral reaction and deformation of rocks
3
Q
Hydrothermal solutions
A
Carry dissolved elements that can cause formation of new minerals (metasomatism)
4
Q
Causes of metamorphism
A
- Plate tectonics and mountain building
- Intrusion of magmas into upper crust
5
Q
Metamorphic foliation
A
Foliation is the alignment of micas and other minerals because of compression, it is common in schist
6
Q
Metamorphic foliation importance
A
Influences groundwater flow and slope stability and shows potential of sliding
7
Q
Metamorphic resources
A
- Slate and marble are important building stones
- many gems are metamorphic minerals like ruby, garnet, jade ect
