4) 5,0t Chiefly grey/dk grey, silty to finey sandy fissile shale becoming interminuted w/ vfg sand upward. Flat ovoid sandy septarian conc. at 3,8 above base. No fossils. 5) 5,5 Laminated + cross-laminated SS weather's plty lite grey brown locally w/ large flat conc masses 6 to 10' across, ripple marks + Ophiomorpha + often trace fossils and pods - microfossils - chiefly Inoceramus Collignaucos sophites. This is Collig. ledge. - really's sandy zone with frequent large sandy conc masses, Conc + masses chiefly in basal layer SS + up to 3 to 5' thick. 6) 3,3 Covered - To approx base of first layer between Septaria zones Collig. ledge. These have some fores at large Inols, nothing good found. 2nd layer comes in above about 3 to 5 ft.