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Metamorphic Grades
This is the list of metamorphic facies that can/will be assigned as a sample attribute. The goal here is to provide a general classification of the P-T conditions experienced by the sample. One objective here is to try and not be too specific, because we all know how complex a rock history can be. It might be desirable to provide for additional information such as a sequence of facies such as "Granulite with Blueschist overprint" in the comment field (see sample descriptors). Input on this subject is requested...
- Zeolite
- Prehnite-pumpellyite
- Greenschist
- Amphibolite
- Epidote amphibolite
- Granulite
- Blueschist
- Eclogite
- Hornfels
- Chlorite zone
- Biotite zone
- Garnet zone
- Staurolite zone
- Staurolite-kyanite zone
- Kyanite zone
- Sillimanite zone
- Andalusite zone
- Sillimanite-K feldspar zone
- Garnet-cordierite zone
- Migmatite zone
- Ultra high pressure
- Ultra high temperature
