Hole 36 (continued.) From To Th. possibility that there was error in calculation of depth.) Following actual thicknesses of clay types recovered-- 14" Hard black top block, scattered fine nodules in lower 6" 6" Gray flint, scattered nodules 22" Nodular block 33" Sideritic nodular block. 15" Sideritic block. 93'6" 94'8" 14" Shaley sideritic block. ----?---- 94'8" 96'7" 1'11" Gray to dark gray silty shale, Fe 'bumps' (greatest concentration appears to be in upper few inches). Basal 6" hard dark gray siltstone. Green-gray shaley silt to silty shale (Fe 'bumps') 96'7" 98'3" 1'8" 98'3" 99'11" 1'8" Green to gray and block clay shale, many Fe 'bumps'. Mauch Chunk 99'11" 101'3" 1'4" Shale as above but red.