17) LS, gray-brown weathering, platy frag. of shells, mostly algall tracks. 1/2 to 2' lead over all weathering cleaning - 7' 18.) Covered 21' 19) LS, (calcareous) with some quartz 10-20%, cherty quartzite pebble 1% or less; weathered a mid-brown-gray, white flake-wavy unconform bedding, 1" to 2" thick; 35' The upper 40' become very quartzitic - about 85-90% SiO2 excluding cement. Becomes sparsely cemented upwards. 20.) Covered, 15', probably like unit 19 see note page 112. 8/22/58/7 and 7/17/57/9 21) LS, massive, brownish-gray weathering; convex bedding in 6" to 1' intervals, but not used "true bedding. 31' biohermal re-f., very light gray or fresh surface. very fine gravel, probably mostly recrystallized? 22.) Covered. 9' 23) LS, brown-gray weathering, dark gray or fresh surfaces. 24.) Covered, 20' 25) LS, weathers orange-brown, has minor (Imston) chert nodules - 9' 26.) Covered, 36 27) Sandstone, quartz grain mud; calcareous cement. Brown-green grains, chert + quartz. pebbles (1/4" dia to 1/2"). Laminations, some in 1/4" laminae. 31' 28) Conglo; has same sand unit as 27 just that pebbles become 4" to 8" diam and up to about 75 to 80% of lithology. 29) [illegible] [illegible]