﻿1 
  26 
  D. 
  D. 
  Gondii 
  — 
  Deep 
  Wells 
  at 
  Findlay, 
  Ohio. 
  

  

  Depth 
  Thick- 
  

   in 
  feet 
  

  

  (a) 
  Limestone, 
  light 
  gray 
  to 
  dark 
  gray, 
  

   minutely 
  crystalline; 
  no 
  fossils 
  seen, 
  

  

  but 
  probably 
  of 
  Low 
  ville 
  age 
  1325-1401 
  76 
  

  

  Lower 
  Ordovician 
  series 
  : 
  

  

  Strata 
  of 
  probable 
  Stones 
  River 
  age 
  : 
  

  

  (e) 
  Limestone, 
  dense 
  textured, 
  dark 
  1401-1637 
  236 
  

  

  (d) 
  Limestone, 
  light 
  gray, 
  minutely 
  crys- 
  

   talline 
  1637-1675 
  38 
  

  

  (c) 
  Limestone, 
  dense 
  textured, 
  dark, 
  be- 
  

   coming 
  brownish 
  near 
  base. 
  Some 
  

   shaly 
  beds 
  present. 
  Show 
  of 
  oil 
  near 
  

   top 
  in 
  Griibb 
  well. 
  These 
  limestones 
  

   are 
  devoid 
  of 
  fossils 
  and 
  vary 
  from 
  

   light 
  dove 
  color 
  to 
  dark 
  bluish. 
  The 
  

   texture 
  is 
  smooth. 
  Some 
  portions 
  

   are 
  argillaceous 
  and 
  resemble 
  litho- 
  

   graphic 
  limestone 
  ._.. 
  1675-1850 
  175 
  

  

  (b) 
  Shale, 
  bluish 
  green, 
  slightly 
  calcare- 
  

  

  ous... 
  _ 
  1850-1875 
  25 
  

  

  (a) 
  Limestone, 
  dark 
  gray 
  1875-1894 
  19 
  

  

  Strata 
  of 
  probable 
  St. 
  Peter 
  age 
  : 
  

  

  (i) 
  Limestone, 
  dolomitic, 
  white, 
  granu- 
  

  

  ular 
  with 
  quartz 
  grains 
  in 
  lower 
  

  

  portion. 
  In 
  the 
  Norris 
  well 
  a 
  little 
  

  

  oil 
  was 
  found 
  distributed 
  through 
  

  

  the 
  rock 
  at 
  a 
  depth 
  of 
  1900 
  to 
  1960 
  

  

  feet, 
  and 
  at 
  1990 
  feet 
  was 
  the 
  "Blue 
  

  

  Lick" 
  water 
  which 
  rose 
  1200 
  feet.-. 
  1894-2085 
  191 
  

   (h) 
  Sandstone, 
  calcareous, 
  white. 
  Quartz 
  

  

  grains 
  well 
  rounded 
  and 
  assorted 
  2085-2105 
  20 
  

  

  (g) 
  Limestone, 
  white, 
  slightly 
  dolomitic, 
  

  

  minutely 
  granular. 
  Some 
  quartz 
  

  

  grains 
  present 
  2105-2155 
  50 
  

  

  (f) 
  Sandstone, 
  with 
  calcite, 
  microcline 
  

   and 
  orthoclase 
  as 
  prominent 
  acces- 
  

   sory 
  constituents 
  2155-2195 
  40 
  

  

  (e) 
  Limestone, 
  slightly 
  dolomitic, 
  white, 
  

  

  siliceous, 
  minutely 
  granular 
  _ 
  _ 
  2195-2229 
  34 
  

  

  (d) 
  Sandstone^ 
  with 
  much 
  calcite. 
  

   Quartz 
  grains 
  rounded, 
  average 
  di- 
  

   ameter 
  0'4 
  mm 
  2229-2239 
  10 
  

  

  (c) 
  Limestone, 
  dolomitic, 
  dark 
  grav, 
  

  

  sandy... 
  _"_ 
  2239-2255 
  16 
  

  

  (b) 
  Clay, 
  green 
  _ 
  2355-2260 
  5 
  

  

  (a) 
  Sandstone, 
  with 
  few 
  accessory 
  min- 
  

   erals 
  besides 
  calcite. 
  Quartz 
  grains 
  

  

  show 
  secondary 
  enlargement 
  2260-2300 
  40 
  

  

  