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Baraga Group; Michigamme Formation; Mafic to intermediate flows and pyroclastic rocks, including Clarksburg Volcanics member

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Poorly exposed. Includes Clarksburg Volcanics member which is mostly mafic to intermediate pyroclastic rocks in Marquette trough, between Marquette Bay and Champion
State Wisconsin
Name Baraga Group; Michigamme Formation; Mafic to intermediate flows and pyroclastic rocks, including Clarksburg Volcanics member
Geologic age Early Proterozoic
Lithologic constituents
Major
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)
References

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.

https://pubs.er.usgs.gov/publication/i2185

USGS Geologic Names lexicon found at: http://ngmdb.usgs.gov/Geolex/

https://ngmdb.usgs.gov/Geolex/search
NGMDB product
Counties Vilas