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1. Plates vs. Plumes Debate

   07 Oct 2011 | Contributor(s):: Gillian Rose Foulger

   Early in the 21st century, scientists became increasingly skeptical about the deep-mantle plume hypothesis. This postulates that unusual volcanism results from thermal diapirs ("plumes") that originate at the core-mantle boundary and deliver hot material via narrow conduits to Earth's surface....