Circum-Superior Belt northwestern Superior craton margin intrude an older, 2,090 to 2,070 million-year-old dike swarm. The Ospwagan Group is younger than and the 1,864 million-year-old Winnipegosis komatiite belt lies to the southwest. Numerous tectonic settings have been suggested for triggering magmatism in the Fox River Belt, including a marginal basin rifting event. At the southern portion of the Circum-Superior Belt, a group of fragmental sediments composed of iron formation was formed during a period of magmatic activity in the Marquette Range Supergroup. Included in the Marquette Range Supergroup is the Hemlock Formation, a bimodal volcanic group that is estimated to have an
Ring of Fire (band) Ring of Fire (band) Ring of Fire is an American neoclassical/progressive/power metal band from Chula Vista, California formed in 2000. Fronted by former Yngwie J. Malmsteen collaborator Mark Boals after the release of his solo album "Ring of Fire", the band also included guitarist Tony MacAlpine, "Planet X" drummer Virgil Donati, grammy-award-winning bassist Philip Bynoe, and keyboardist Steve Weingart. Ring of Fire released three studio albums between 2001 and 2004, as well as a live album, "Burning Live In Tokyo 2002". After disbanding, Boals, MacAlpine, and Donati later formed Seven the Hardway. Boals, MacAlpine, and keyboardist Vitalij Kuprij returned in