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Gunflint Range : ウィキペディア英語版 | Gunflint Range
The Gunflint Range is an iron ore deposit in northern Minnesota in the United States and Northwestern Ontario, Canada. The range extends from the extreme northern portion of Cook County, Minnesota into the Thunder Bay District, Ontario. The Gunflint is a continuation of the Mesabi Range to the southwest. The two have been separated by the intrusion of the Duluth Gabbro complex. The iron deposit is a banded iron formation of the Early Proterozoic Animikie Group.〔Mel'nik, Y. P. and D. B. Vitaliano ''Precambrian Banded Iron-formations: Physicochemical Conditions of Formation,'' Elsevier, 1982, p. 14 ISBN 978-0-444-41934-7〕〔http://tin.er.usgs.gov/geology/state/sgmc-unit.php?unit=MNPReif%3B0 ''Animikie Group; Iron-formation,'' Minnesota geologic map data, USGS〕 The cherts of the Gunflint (the Gunflint Chert) are noted for containing Precambrian microfossils. ==See also==
*Midcontinent Rift System *Paulson Mine *Mesabi Range *Cliffs Shaft Mine Museum *Cuyuna Range *Vermilion Range (Minnesota) *Gogebic Range *Iron Mountain Central Historic District *Marquette Iron Range
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