Metamorphic Facies Flashcards
Distinctive mineral assemblages in metamorphic rocks that form in response to a particular range of temperature and/or conditions.
Metamorphic Facies
Enumerate all of the Facies.
Hornfels Facies
Zeolite Facies
Prehnite-Pumpellyte Facies
Greenschist Facies
Amphibolite Facies
Granulite Facies
Blueschist Facies
Eclogite Facies
Includes non-foliated, fine-grained hornfels rocks and coarser-grained rocks. Formed by heat-induced metamorphism, and commonly localized around intrusions.
Hornfels Facies
What are the four different types of Hornfels Facies?
- Albite-Epidote Hornfels Facies
- Hornblende Hornfels Facies
- Pyroxene Hornfels Facies
- Sanidinite Hornfels Facies
Low-grade metamorphism characterized by the zeolite mineral group, and commonly exist with quartz, analcime, laumontite, heulandite and wairikite.
Zeolite Facies
Low-grade metamorphism commonly produced from basalt, greywackes and mudstones
PREHNITE-PUMPELLYITE FACIES
Medium-grade metamorphism characterized by green minerals including epidote, chlorite and actinolite in foliated and non-foliated metamorphic rocks.
Greenschist Facies
Medium- to high-grade metamorphism characterized by the start of the appearance of staurolite
Amphibolite Facies
Medium- to high-grade metamorphism commonly dominated by granoblastic texture in non-foliated rocks. Common rocks include gneisses, charnockites and migmatites.
Granulite Facies
Medium- to high-grade metamorphism from low temperature conditions, characterized by blue minerals, such as glaucophane, aegirine and kyanite, giving its blue-colored appearance.
Blueschist Facies
High-grade metamorphism resulting in fine- to coarse-grained dense, dark green rocks, commonly along with reddish- brown garnet porphyroblasts.
Eclogite Facies
A sequence of facies that occurs across a metamorphic terrane due to differences in pressure and temperature (P/T) conditions
Metamorphic Facies Series
