Felsic metavolcanic rocks of 1835- to 1845-Ma age group (WIXf;0)

State	Wisconsin
Name	Felsic metavolcanic rocks of 1835- to 1845-Ma age group
Geologic age	Early Proterozoic
Original map label	Xf
Comments	Pembine-Wausau terrane
Primary rock type	meta-rhyolite
Secondary rock type	metavolcanic rock
Other rock types	tuff
Lithologic constituents	Major Igneous > Volcanic > Felsic-volcanic > Dacite (Flow)Rhyolite to dacite and, locally, andesite tuff, breccia, and minor sedimentary rocks, including conglomerate. Igneous > Volcanic > Felsic-volcanic > Rhyolite (Flow)Rhyolite to dacite and, locally, andesite tuff, breccia, and minor sedimentary rocks, including conglomerate. Incidental Sedimentary > Clastic > Conglomerate (Bed)Rhyolite to dacite and, locally, andesite tuff, breccia, and minor sedimentary rocks, including conglomerate. Igneous > Volcanic > Felsic-volcanic (Volcaniclastic, volcanic breccia)Rhyolite to dacite and, locally, andesite tuff, breccia, and minor sedimentary rocks, including conglomerate. Igneous > Volcanic > Mafic-volcanic > Andesite (Pyroclastic, tuff)Rhyolite to dacite and, locally, andesite tuff, breccia, and minor sedimentary rocks, including conglomerate.
Map 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 [http://pubs.er.usgs.gov/publication/i2185]
Unit 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 [http://pubs.er.usgs.gov/publication/i2185]
Geographic coverage	Langlade - Lincoln - Marathon