﻿Mississippian 
  of 
  Ohio 
  and 
  Pennsylvania. 
  315 
  

  

  Thickness 
  

   No. 
  , 
  Feet 
  

  

  11. 
  Sharon. 
  Shale, 
  black, 
  fissile, 
  tough, 
  somewhat 
  argilla- 
  

  

  ceous 
  in 
  spots, 
  carbonaceous 
  and 
  ferruginous. 
  This 
  

   seems 
  to 
  be 
  disconformable 
  under 
  the 
  Conoquenes- 
  

   sing 
  . 
  _ 
  15 
  

  

  10. 
  Covered 
  (section 
  continued 
  on 
  road 
  to 
  south) 
  54 
  

  

  9. 
  Sandstone, 
  hard, 
  close 
  grained, 
  pebbles 
  3 
  

  

  8. 
  Covered 
  _ 
  43 
  

  

  7. 
  Shenango. 
  Sandstone, 
  shaly, 
  drab; 
  some 
  clay 
  shale 
  24 
  

  

  6. 
  Sandstone, 
  white 
  quartz 
  rock, 
  weathering 
  deep 
  to 
  buff 
  

  

  and 
  brown, 
  massive, 
  ferriferous 
  12 
  

  

  5. 
  Covered, 
  with 
  occasional 
  shale 
  or 
  sandstone. 
  _. 
  2*70 
  

  

  4. 
  Venango. 
  Shale, 
  blue, 
  and 
  thin 
  sandstone 
  12 
  

  

  3. 
  Sandstone, 
  single 
  layer, 
  weather 
  flaggy, 
  fossils 
  3£ 
  

  

  2. 
  Shale 
  _. 
  ....._ 
  1 
  

  

  1. 
  Covered 
  to 
  railroad 
  level 
  _ 
  _..._._. 
  17 
  

  

  The 
  above 
  succession 
  of 
  rocks 
  may 
  be 
  seen 
  by 
  following 
  the 
  

   road 
  from 
  the 
  works 
  of 
  the 
  Warren 
  Silica 
  Co. 
  up 
  to 
  the 
  quarries 
  

   from 
  which 
  the 
  raw 
  materia] 
  is 
  secured. 
  Torpedo 
  is 
  a 
  station 
  

   on 
  the 
  D. 
  A. 
  V. 
  & 
  P. 
  It. 
  R. 
  between 
  Titusville 
  and 
  Warren 
  in 
  

   Warren 
  County, 
  Pa. 
  

  

  23a. 
  Hyde 
  Kun 
  Section. 
  

  

  Thickness 
  

   No. 
  Feet. 
  

  

  15. 
  Meadville. 
  Sandstone, 
  rather 
  coarse, 
  brown 
  color; 
  

  

  layers 
  are 
  fairly 
  massive 
  . 
  18 
  

  

  14. 
  Mead, 
  upper 
  Limestone. 
  Bluish, 
  siliceous, 
  conchoidal 
  1-J 
  

   13. 
  Shale 
  and 
  thin 
  sandstone, 
  partly 
  covered 
  52 
  

  

  12. 
  Mead, 
  lower 
  Limestone. 
  Same 
  as 
  above 
  f 
  

  

  11. 
  Sharpsville. 
  Shale 
  and 
  thin 
  sandstone, 
  bluish 
  grey 
  and 
  

  

  brown. 
  .. 
  . 
  . 
  2^ 
  

  

  10. 
  Covered 
  ...._ 
  _. 
  30 
  

  

  9. 
  Orangeville. 
  Shale, 
  bluish 
  and 
  drab, 
  soft, 
  argillaceous, 
  

  

  much 
  stained 
  by 
  iron 
  ___„ 
  45 
  

  

  8. 
  Corry. 
  Sandstone, 
  thin-bedded 
  toward 
  top, 
  shaly 
  in 
  

  

  center 
  and 
  massive 
  below 
  (lowest 
  layer 
  is 
  21 
  inches 
  

   thick) 
  ; 
  color 
  is 
  buff 
  throughout 
  and 
  the 
  rock 
  is 
  of 
  fine 
  

   texture 
  „ 
  _.„. 
  „_ 
  14 
  

  

  7. 
  Cussewago. 
  Shale, 
  blue, 
  argillaceous 
  .. 
  i 
  

  

  6. 
  Cussewago 
  Limestone. 
  Very 
  typical, 
  a 
  blue 
  siliceous 
  

  

  limerock 
  which 
  also 
  carries 
  much 
  iron. 
  On 
  weather- 
  

   ing 
  the 
  lime 
  is 
  dissolved, 
  leaving 
  behind 
  a 
  crust 
  of 
  

   deeply 
  stained 
  ferruginous 
  sand. 
  Here 
  the 
  limestone 
  

   occurs 
  in 
  two 
  layers 
  .. 
  If 
  

  

  5. 
  Shale, 
  soft, 
  argillaceous, 
  bluish; 
  lithologically 
  very 
  

  

  much 
  like 
  the 
  Orangeville 
  . 
  . 
  ...._ 
  4-J- 
  

  

  4. 
  Covered.. 
  _-- 
  . 
  42 
  

  

  3. 
  Miceville. 
  Shale 
  and 
  thin 
  sandstone 
  -. 
  8 
  

  

  2. 
  Sandstone, 
  thin-bedded 
  and 
  shaly 
  -_ 
  12 
  

  

  1. 
  Covered 
  to 
  Thompson's 
  Run. 
  

  

  