2.7 Billion Year Old Mt. St. Helens of Northern Minnesota : Petrography and Geochemistry of the Neoarchean Gafvert Lake Sequence
Schwierske, Kelly L.
Pignotta, Geoffrey S.
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The Gafvert Lake sequence comprises part of the Vermilion District in the Wawa-Abitibi Terrane in northeastern Minnesota and is located in Minnesota's newest state park, Lake Vermilion State Park. The Neoachean Gafvert Lake sequence is a 2.7 billion year old volcanic and plutonic complex similar to those found in modern subduction zone settings. The purpose of this study was to provide a better understanding of the geological, volcanological, geochemical, tectonic and mineralization processes, as well as age relationships associated with its development.
Gafvert Lake Sequence (Minn.)
Lake Vermilion State Park (Minn.)
Color poster with text, maps, images, and graphs.