1. METAPELITIC REACTIONS AND FACIES

2. Metapelitic Zones

3. Metapelitic Zones and Facies

4. Aluminosilicate Minerals and Metamorphic Facies

5. Greenschist Facies – Chlorite and Biotite Zones

6. Chlorite Zone Assemblage – Lower Greenschist Facies

7. Reaction Controlling the Transition from the Chlorite Zone to the Biotite Zone
(Upper Greenschist Facies)

8. Biotite-in Reaction (2)
Chlorite

9. Compositional Changes in the Biotite Zone
Increasing Grade
In principle, chloritoid can form by reaction between chlorite and pyrophyllite but this is rarely observed

10. Chloritoid-in Reaction (3)

11. Garnet Zone (Transitional Between Greenschist and Amphibolite Facies)

12. Garnet-in Reaction (4)
Garnet

13. Amphibolite Facies – Staurolite, Kyanite and Sillimanite Zones

14. Staurolite-in Reaction (5)

15. Chloritoid-out Reaction (6)

16. Staurolite-in Reaction (7)

17. Staurolite-out Reaction (10)

18. Granulite Facies A K F
Sillimanite
+ Qtz
K-feldspar
Muscovite

19. Sillimanite-K-Feldspar-in Reaction (11)
Muscovite
+ Qtz K F
K-feldspar
Sill-Kfs

20. Granulite Facies
Grt-CrD