5/10/95 '7 Section on road immediately S of Grg on Waide of road. Algl railroad bed has been Photos -2 B/W 1/oo at ft 4 Iowa, Dubuque Co. (see 1962 Field notes) converted to a gravelled bike path. Covered 10" 12" 8" looks like siltstone 1 3/4' lenticular silt? 3 1/2' rubby bedded silt? slt 3' A silt shale 3+1 with graptolite B Float Col. 5/15/95 A Dolorthoceras socicle Climatogaster? A. Orthoceroids solton corals encrusting Bryozo brachiopods From Grg to intersection then east to Oakbury, on the way to Oakbury Twin Springs Chz - road section on W side was noted maybe CR thinks this is Ton Mbr of Deedrah Fm See heverson & Gerke (1972 p. 113? chart, fig 1) but ??? This is lower part of Maquoketa Fm just above Hepanperate Zone {RS