https://aeon.co/essays/metamorphic-rocks-go-on-deep-journeys-we-never-can?utm_s… Created Tue, 17/12/2024 - 22:00 Updated Tue, 17/12/2024 - 22:00 Metamorphic rocks are our emissaries from the deep, travelling to alien realms and revealing the restless nature of Earth - by Marcia Bjornerud Read at Aeon
