epidote-amphibolite facies

epidote-amphibolite facies

[¦ep·ə‚dōt am′fib·ə‚līt ‚fā·shēz] (petrology) Metamorphic rocks formed under pressures of 3000-7000 bars and temperatures of 250-450°C with conditions intermediate between those that formed greenschist and amphibolite, or with characteristics intermediate.