3/12/95. *Continue S of Co Rd 7 to intersection w. Co Rd 30 turn right & go up hill to section Cummingville Annex. County road 30 3B B&W# 7 photo. Glenwood, Pecatonica & Plattville. lower part of rd cut B&W# 8 photo. Middle part of rd cut. General view of step. Glenwood Fm at bottom Decker bentonite w. close to top of road cut Unconformity (seq. Boundary) at (?) near top of Glenwood, then Pecatonica is a strong septum track, deep water Plattville, W Carbonates (debris) coming from SE? and shale (Decorah?) from northwest ??? Pecatonica is difficult to identify - thin shale & not thick 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 & . mile across bridge