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Data sets Publications Expeditions Thesaurus
Baraga Group  search
BTChronostratigraphic Units
 .Precambrian
 ..Proterozoic
 ...Baraga Group
RTMichigan
 Hemlock Formation
 Michigamme Formation
SNN Michigan. Includes Goodrich Quartzite, Michigamme Formation (Bijiki iron formation, Clarksburg volcanics and Greenwood iron formation); Hemlock Formation, Fence River Formation and Badwater Greenstone. Added to Thesaurus in 1989.