State | Wisconsin |
---|---|
Name | Puritan Quartz Monzonite |
Geologic age | Late Archean |
Lithologic constituents | Major
Igneous > Plutonic > Granitic > Granodiorite
Igneous > Plutonic > Granitic > Granite
|
Comments | Continental margin assemblage (north of Niagara Fault) |
References | Sims and others, 1977, Geology and Rb-Sr age of Precambrian W Puritan Quartz Monzonite, northern Michigan: U.S. Geological Survey Journal of Research, v. 5, p. 185-192.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 |