A metamorphic rock with a blue colour, formed under conditions of high pressure and low temperature.
More example sentences
- Possible Western Domain equivalents elsewhere in the Antarctic Peninsula are the amphibolite and blueschist grade rocks of the Scotia metamorphic complex in the South Shetland and South Orkney Islands.
- Specific rock names that record both the parent rock and its mineralogy are relatively rare, but include eclogite, blueschist, and amphibolite.
- The sequence shows retrogression from blueschist to greenschist facies metamorphism during deformation.