﻿Appalachian 
  Geosyncline. 
  453 
  

  

  Depth 
  

  

  beiow 
  

  

  Thick- 
  top 
  of 
  

  

  ness 
  Sum 
  Pocono 
  

  

  Eesistant 
  Middle 
  Catskill 
  Membeb. 
  Makes 
  the 
  CatsMll 
  

  

  ridge. 
  About 
  10 
  per 
  cent 
  red 
  shale. 
  

   Resistant 
  reef 
  of 
  conglomerate 
  and 
  gray 
  to 
  purple 
  cross- 
  

   bedded 
  sandstones. 
  The 
  lower 
  half 
  more 
  

   conglomeratic, 
  irregularly 
  rounded 
  pebbles 
  

   of 
  white 
  quartz. 
  Average 
  diameter 
  0*5 
  to 
  

   l'O 
  in., 
  maximum 
  1*5 
  in. 
  A 
  prominent 
  

   local 
  horizon 
  making 
  the 
  crest 
  of 
  the 
  upper 
  

   Catskill 
  ridge 
  flanking 
  the 
  higher 
  Pocona 
  

  

  ridge 
  40 
  -2590 
  

  

  * 
  Red 
  shales 
  with 
  probable 
  mud 
  cracks 
  80 
  

  

  Purple 
  sandstone 
  17 
  

  

  Gray 
  to 
  olive 
  green 
  sandstone 
  20 
  

  

  Red 
  shales 
  with 
  suggestions 
  of 
  mud 
  cracks. 
  _ 
  20 
  —2677 
  

  

  Exposure 
  stops 
  on 
  west 
  side 
  of 
  river. 
  

  

  Section 
  on 
  East 
  Side 
  of 
  Riveb 
  Beginning 
  with 
  — 
  2677. 
  

   Soft 
  red 
  sandstone, 
  102 
  feet 
  thick, 
  the 
  upper 
  87 
  

  

  feet 
  equivalent 
  to 
  section 
  given 
  on 
  west 
  side 
  15 
  — 
  2692 
  

  

  Olive 
  sandstone 
  with 
  transition 
  beds 
  at 
  top. 
  _ 
  . 
  145 
  

  

  Red 
  argillaceous 
  sandstone 
  17 
  

  

  Reddish 
  brown 
  sandstone, 
  thick 
  bedded 
  20 
  

  

  Olive 
  sandstone, 
  with 
  scattered 
  pebbles 
  83 
  

  

  Brown 
  sandstone, 
  conglomeratic, 
  with 
  scattered 
  

   pebbles 
  1 
  in. 
  in 
  diameter, 
  and 
  clay 
  frag- 
  

   ments 
  _ 
  '_. 
  30 
  

  

  Olive 
  sandstone, 
  hard, 
  flaggy 
  ._ 
  _ 
  20 
  

  

  Red 
  shale 
  and 
  maroon 
  sandstone, 
  suggestions 
  

  

  of 
  mud 
  cracks 
  in 
  lower 
  and 
  more 
  sandy 
  part 
  31 
  

   Light 
  gray 
  quartzite 
  conglomerate, 
  beds 
  2 
  to 
  3 
  feet 
  

   thick. 
  Subangular 
  to 
  subrotund 
  pebbles 
  of 
  

   white 
  quartz, 
  025 
  to 
  0*75 
  in. 
  in 
  diameter. 
  _ 
  25 
  

  

  Reddish 
  brown 
  mudstone 
  10 
  

  

  Maroon 
  brown 
  hard 
  sandstone 
  23 
  

  

  Hard 
  greenish 
  gray 
  flaggy 
  sandstone 
  with 
  some 
  

   transitions 
  into 
  brown 
  sandstones, 
  red 
  argil- 
  

   laceous 
  sandstones, 
  and 
  some 
  pebbly 
  beds 
  

   with 
  white 
  quartz 
  pebbles, 
  average 
  dia- 
  

   meter 
  0-25 
  in., 
  maximum 
  0*5 
  in 
  345 
  891 
  —3441 
  

  

  Base 
  of 
  the 
  most 
  resistant 
  portion 
  of 
  the 
  

   Catskill. 
  

   Maroon 
  sandstone 
  passing 
  above 
  into 
  red 
  shale 
  20 
  

   Eesistant 
  mouse-gray 
  flaggy 
  sandstones 
  with 
  tones 
  

  

  of 
  brown. 
  Some 
  current 
  marks 
  . 
  _ 
  286 
  

  

  Olive 
  gray 
  shale 
  replaced 
  largely 
  to 
  hematite.. 
  3 
  

   Mouse-gray 
  sandstone, 
  mostly 
  hard, 
  some 
  cross- 
  

   bedding 
  and 
  current 
  marking 
  195 
  

  

  Red 
  shale 
  with 
  several 
  clearly 
  marked 
  mud 
  

  

  cracked 
  surfaces 
  _ 
  __ 
  15 
  —3960 
  

  

  Clear 
  gray 
  gritty 
  sandstone 
  becoming 
  argillaceous 
  

  

  in 
  upper 
  20 
  feet 
  70 
  

  

  Concealed 
  170 
  

  

  Brown 
  sandstone, 
  flaggy 
  and 
  argillaceous 
  60 
  

  

  Red 
  shale, 
  shows 
  what 
  are 
  probably 
  mud 
  cracks 
  5 
  —4265 
  

  

  Red 
  brown 
  sandstone, 
  argillaceous 
  38 
  

  

  Olive 
  sandstone, 
  thin 
  bedded 
  155 
  

  

  Red 
  shale, 
  some 
  suggestions 
  of 
  mud 
  cracks. 
  .. 
  62 
  

   Red 
  shaly 
  sandstone 
  10 
  —4530 
  

  

  