| State | Wisconsin |
|---|---|
| Name | Biotite schist |
| Geologic age | Early Proterozoic |
| Lithologic constituents | Major
Metamorphic > Schist > Mica-schist > Biotite-schistMetamorphosed graywacke in poorly exposed areas in northwestern Wisconsin.
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| Comments | Continental margin assemblage (north of Niagara Fault). Sims and others, 1985b, Geology and geochronology of granitoid and metamorphic rocks of Late Archean age in northwestern Wisconsin: U.S. Geological Survey Professional Paper 1292-C, 17 p. |
| References | Sims and others, 1985b, Geology and geochronology of granitoid and metamorphic rocks of Late Archean age in northwestern Wisconsin: U.S. Geological Survey Professional Paper 1292-C, 17 p.https://pubs.er.usgs.gov/publication/pp1292C 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 |
| NGMDB product | |
| Counties | Ashland - Iron - Price - Sawyer - Vilas |