5/14/75 quartzo, 1 on each side of Hwy 44. See Fig 20 -topographic map (9A) (Springs) Spring Grove X; south side of Hwy Coll Bry. 5/14/95/A: float in Decorah Sh Roll. 2 B+W photos in X on E side of Hwy 44 2 B+W photos #19+20 in X on N side of Hwy 44 (9B) E side of Hwy 44 (Hailings) Scree slope shows numerous brachiopods - a shell hash in calcarenite. Fine calcilutite below calcarenite. 3"-4" diam orthocerid mollusc; trilobites (9C) X N side Hwy 44 late ledges (v. thin) 2"-3" - not v. persistent from lower ? to bottom of upper ? of Decorah Shale. v. dark grey to brownish black band if plus thick of shale with shell hash here & there at top of it. Pyrite. Shell hash of brachiopods? This suggests a sudden deepening event creating anoxic shale environment. [illegible]