Geology Page (USA) – Supervolcano fed from Earth’s mantle caused crustal plates to rotate Douwe J.J. van Hinsbergen Posted on August 17, 2021 by douweAugust 17, 2021 http://www.geologypage.com/2021/07/supervolcano-fed-from-earths-mantle-caused-crustal-plates-to-rotate.html