Eclogite facies
Chemical Process (Solid-phase growth) - High-P metamorphic facies series
Index Minerals
Omphacite, Pyrope
Required Geological Setting
Accretionary complexes + High-P metamorphic rocks
Occurrence
Metamorphic rocks formed by regional metamorphism in the following condition: more than 500 degree and more than 1.2 GPa (deeper than 40 km depth). A metamorphic facies formed in subduction zones. Eclogite facies metamorphic rocks are in Franciscan-type high-P metamorphic rocks.
Change of mineral assemblages
- [ Extinct ] Epidote, Clinopyroxene
- [ Appear ] Pyrope, Omphacite
Mineral Assemblages
- [ Felsic Rocks ] Quartz, Phengite, Jadeite/Omphacite, Pyrope
- [ Mafic Rocks ] Omphacite, Pyrope, (Kyanite, Hornblende, Zoisite)
- [ Ultramafic Rocks ]
- [ Mudstone ] Phengite, Pyrope, Kyanite, Quartz, (Talc, Jadeite)
- [ Laterite ] Phengite, Pyrope, Kyanite, Chloritoid, Quartz
- [ Bedded Mn ]
- [ Carbonate Rocks ] Aragonite, Dolomite, Diopside
Localities
- Mount Higashi-Akaishi
Related Occurrences
- Albite-Epidote-hornfels facies
- Hornblende-hornfels facies
- Pyroxene-hornfels facies
- Sanidinite-hornfels facies