Tectonics
That's really cool! We really need to find examples of things like plate tectonics (which is way too simplistic - not implying Enceladaus has "plate tectonics" per say. "mobile tectonics"? "crustal spreading"?) on other bodies. For it to happen in ice vs silcate rock is especially cool. Having more than one data point on the phenomenon would be very useful for checking our models.