5/12/95. *Continue S of Co rd to intersection w, Co Rd 30? turn right go up hill to section Cummingaville Annex. County road 30 BW# 4 photo. Glenwood, Reatonica & Plattville, lower part of rd cut BW# 8 photo. Middle part of rd cut. General view of otep. Glenwood fm at bottom Reider bentonite w. close to top of road cut Unconformity (seg Boundary) at (or near) top of Glenwood, then Reatonica as a trough system trace, deep water Plattville, ?? Carbonates (debris) coming from SE ? and shale (Devoral) from northwest ??? Reatonica is difficult to identify -thin shale + fat thin late band overlying shale 6/28/98 revised * location - 1998 data. Came north from Iowa on IL S 52 & took MN 30 west for about 4 miles; road cut west of intersection & 1 mile across bridge