|Name||Baraga Group; Michigamme Formation; Mafic to intermediate flows and pyroclastic rocks, including Clarksburg Volcanics member|
|Geologic age||Early Proterozoic|
Metamorphic > Metaigneous > MetavolcanicMafic to intermediate flows and pyroclastic rocks [in Michigamme Formation] - poorly exposed. Includes Clarksburg Volcanics member which is mostly mafic to intermediate pyroclastic rocks in Marquette trough, between Marquette Bay and Champion
|Comments||Continental margin assemblage (north of Niagara Fault). ""Xmvl"" - This unit description is combined from the unit descriptions for ""Xmb"" and ""Xmcv"" on the paper map of Sims (1992)|
Sims, P.K., 1992, Geologic map of Precambrian rocks, southern Lake Superior region, Wisconsin and northern Michigan: U.S. Geological Survey Miscellaneous Investigations Map I-2185, scale 1:500,000.
USGS Geologic Names lexicon found at: http://ngmdb.usgs.gov/Geolex/