Pg. vi (chart), 37-40. Mikana Member of Copper Falls Formation. (Follows informal usage of M.D. Johnson, 1986, Wisconsin Geol. Nat. Hist. Survey Inf. Circ., no. 55, 42 p., and M.D. Johnson, 1984, Univ. Wisconsin PhD dissert.)
Till and stream sediment. Till, unbedded, slightly gravelly to gravelly sandy loam. Top 3.5 to 5 m is dark reddish brown oxidized and leached zone. Till is thin where it overlies Barron Quartzite; reaches up to 20 m elsewhere. Stream sediment, cross-bedded and horizontally bedded sand containing imbricated gravel; thickness 10 m. Mikana Member is most similar to older Pokegama Member (new) of Copper Falls Formation, which has slightly more quartzite and pebble fabric indicating southward-flowing ice. Till of the Mikana interpreted as having been deposited during late Chippewa advance of the Chippewa Lobe about 15,000 years ago (Pleistocene; late Wisconsinan), citing Clayton and Moran, 1982 (Quat. Sci. Rev., v. 1, p. 55-82).
Type section: roadcut on west side of a north-south road, in NE/4 SE/4 SW/4 sec. 7, T. 36 N., R. 10 W., [approx. Lat. 45 deg. 36 min. 43 sec. N., Long. 91 deg. 39 min. 11 sec. W.], Rice Lake North 7.5-min quadrangle, Barron Co., northwestern WI.
Named from community of Mikana, at mouth of Red Cedar River, Mikana 7.5-min quadrangle, Barron Co., northwestern WI; name credited to Mark D. Johnson.
Reference section: roadcut on inside curve of County Trunk Highway W, in SW/4 NW/4 SW/4 sec. 15, T. 33 N., R. 9 W., [approx. Lat. 45 deg. 20 min. 21 sec. N., Long. 91 deg. 28 min. 42 sec. W.], Chain Lake 7.5-min quadrangle, Rusk Co., northwestern WI.
[Additional locality information from USGS historical topographic map collection TopoView and Wisconsin Highways, www.wisconsinhighways.org; accessed on June 9, 2018.]

Source: Publication.