Circum-Superior Belt mantle plume that was the source for the 1,880 million-year-old magmatism in the Circum-Superior Belt. The Circum-Superior Belt is the host for widespread mineral deposits, including copper, nickel and platinum group elements. However, the origins of this widespread mineralization is unknown. The Thompson Belt in Manitoba is one of the most comprehensive nickel producing zones on Earth. It has the potential to contain platinum group elements, but the age of the mafic-ultramafic volcanic rocks comprising the nickel deposits are not well known. Since its foundation during the 1950s, numerous mining operations throughout the Thompson Belt have produced over four billion
Ring of Fire III stand out". Ring of Fire III Ring of Fire III is an anthology created by editor-author-historian Eric Flint, first published in hardcover by Baen Books in July 2011. It is the third anthology in the 1632 series following after "Ring of Fire II" (2008). The book includes twenty short stories, together with a preface by the editor. The Preface by Eric Flint explains the contents of this anthology and mentions future works. The reviewer for SFRevu said that "this collection contains high quality and stories that are important to the development of the 1632 universe" and that "fans of the