loc 112 1 Section of Shzron Springs & Lower Milton Mmbas of Pierre, E of Redbird on SE cor, quartz cppd Mesz in NW 1/4, Sec. 20 T. 38 N, R 61 W, Niobrara Co, Wyo 10.4 From top Ardmore bentonite to the "5" top of bentonite at base of the buttress zone 41.7 to ".4" bentonite above buttress zone. 25.0 to ".2" bentonite (about .8 - 2 double 8") 7.0 to ".1" + bentmble 14.5 To bentonic streak, may be discontinuous slabby red-burn worth cone masses Start of start about 4' above base - scattered Miltons throughout. At top, local LS cones some with cone-in-cone just under bentonite streak 37.6 To top lzycr lzycr sept. ls cones. (smell scaphite in it.) The red platy cone masses. Czl csepts begin to come in about 20 feet above base, shale changes to more blocky, less fissile very gradually upward in this interval. Section begins just N of Mule Creek cut-off on Ardmore bentonite at base of bluff. 5