in lower 60'+ where b otvb zones with conc masses alternate with thin-bedded, lzyfus which weform into thin ledges. A top is soft, thin USF sznd, then into tan crbshyle. Next is thick grzy white sand with brownish streaks & approx 11 bedding. Dzue thinks this, his 3rd ss, thckr because of alternation of LSF and USF. At top is rooflet zone and Fe crust under next then bon shrelo, which has sudry layers with coffeground printrgs. Local sharp contact on this with rip-ups. Most of unit USF - Dzue szys some LSF in lower part. We missed this. At top this ss is burrowed rootlet ss thin coal + shale zone. The ss is 12sf