2. Geologic map of the Bergen Arcs
Geological Survey of Norway

3. The area of Holsnoy with extensive eclogite development
The area of Holsnoy with extensive eclogite development. Note that eclogite distribution is not controlled by lithology.
Austrheim (1987) Fig. 1b

4. Granulite facies Eclogite facies
The basic field relationship discussed in the paper: eclogite cuts (and is thus younger than) granulite-facies assemblages. Sometimes eclogite-facies shear zones follow granulite-facies folitaion, sometimes not. For discussion of Problem Set Question 2.
Austrheim (1987) Fig. 7c

5. Shear zone
For discussion of Problem Set Question 1.
Winter, 2001

6. Metamorphism of the Bergen Arcs, Norway
Density: ~3.2g/cm3
Density: ~3.0g/cm3 M1
For discussion of Problem Set Question 3.
Winter, 2001

7. Holsnoy

8. All of the following images were taken by W. Peck on a gloomy (i. e
All of the following images were taken by W. Peck on a gloomy (i.e. typical) day on the Norway coast. They show the progression of Eclogite formation. First, small shears host the eclogite. Shear zones get larger, and eventually the only granulites remaining are in isolated blocks within large shear zones.
Contrast and brightness can be manipulated; I’ve set these images so that they project well but don’t look too ‘over-processed’.

9. Granulite:
Plag+Opx
Eclogite:
Omphacite+Grt

10. Note deflection of granulite-facies foliation into shear zone.

11. Granulite
Eclogite
Sometimes the ‘eclogite front’ is parallel to granulite foliation

12. Eclogite
Granulite

13. Granulite
Eclogite
A large shear zone cuts the base of this hill

14. Eclogite
Granulite
This block of granulite is surrounded by an eclogite-facies shear zone. Note the preservation of the granulite-facies foliation.

16. Eclogite
Granulite
Blocks of granulite in large elcogite shear

17. Granulite
Eclogite