Paint River Group; Lower part

Includes Stambaugh Formation, Hiawatha Graywacke, Riverton Iron-formation, and Dunn Creek Slate (James and others, 1968). Correlated with lower part of Baraga Group
State Wisconsin
Name Paint River Group; Lower part
Geologic age Early Proterozoic
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone > GraywackeIncludes Stambaugh Formation, Hiawatha Graywacke, Riverton Iron-formation, and Dunn Creek Slate (James and others, 1968).
Metamorphic > Metasedimentary > Metaclastic > SlateIncludes Stambaugh Formation, Hiawatha Graywacke, Riverton Iron-formation, and Dunn Creek Slate (James and others, 1968).
Minor
Sedimentary > Chemical > Banded-iron-formationIncludes Stambaugh Formation, Hiawatha Graywacke, Riverton Iron-formation, and Dunn Creek Slate (James and others, 1968).
Comments Continental margin assemblage (north of Niagara Fault). This unit is labeled "Xpl" on paper map of Sims (1992). Description here is the same description as used for "Xpl" on paper map. Reference: James and others, 1968, Geology and ore deposits of the Iron River-Crystal Falls district, Iron County, Michigan: U.S. Geological Survey Professional Paper 570, 134 p.
References
NGMDB product
Counties Florence - Forest