10c25 sec. 2 = 10c.194 Section 2 - graphic, roughly to scale, exaggerated slope. (see p. 28 for measured section) Toncredia sand Large OB to bru. weath. calc. concs fossils- Small ls. concs- Pteris liquiformis, Ostrea -- grades to dominantly ss, first x-law, OB ss beds begin here Bonded outcrop - thin beds to 1/2"muse of gray silty shale, bru-gray silt and/or sandstone. Unfossiliferous beginning of bonded beds -> jarosite band {scattered punky siltst. concretions <- O.B. weath. band, jzvositic Gray silty clay - clayey silt, jarosite splotches Ls. concretions, sandy brick-red jackets, yellow calcite crack fillings, sparse fauna chiefly Nucula and This is "upper limestone concretion zone" of sections 1 and "upper conc. layer" of section 4. 25