﻿D. 
  D. 
  Gondit 
  — 
  Deep 
  Wells 
  at 
  Findlay, 
  Ohio. 
  129 
  

  

  There 
  is 
  nothing 
  in 
  the 
  Findlay 
  well 
  records 
  which 
  proves 
  

   the 
  presence 
  of 
  the 
  Point 
  Pleasant 
  formation 
  as 
  developed 
  in 
  

   southern 
  Ohio, 
  which 
  contains 
  a 
  Trenton 
  fauna. 
  The 
  oil-bearing 
  

   limestone 
  underlying 
  the 
  Utica 
  (?) 
  shale 
  and 
  popularly 
  known 
  

   as 
  the 
  Trenton 
  may 
  be 
  the 
  equivalent 
  of 
  the 
  Galena 
  limestone 
  

   which 
  is 
  of 
  early 
  Trenton 
  age. 
  The 
  rock 
  is 
  a 
  brown, 
  crystal- 
  

   line, 
  open-textured 
  dolomite 
  with 
  numerous 
  voids. 
  These 
  are 
  

   lined 
  with 
  dolomite 
  crystals 
  and 
  marcasite, 
  which 
  appears 
  to 
  

   be 
  the 
  latest 
  mineral 
  introduced. 
  This 
  open-textured 
  oil- 
  and 
  

   water-bearing 
  dolomite 
  has 
  a 
  thickness 
  of 
  68 
  feet. 
  Beneath 
  it 
  

   is 
  a 
  dense, 
  dark 
  gray 
  limestone 
  having 
  numerous 
  fossils. 
  A 
  

   diminutive 
  variety 
  of 
  Dalmanella 
  testudinaria 
  is 
  especially 
  

   significant, 
  and 
  Black 
  River 
  is 
  indicated 
  as 
  the 
  probable 
  age 
  of 
  

   the 
  beds. 
  

  

  The 
  drillers 
  report 
  sharp 
  sands 
  which 
  cut 
  the 
  drill, 
  at 
  depths 
  

   of 
  85 
  and 
  180 
  feet 
  below 
  the 
  top 
  of 
  the 
  " 
  Trenton," 
  but 
  an 
  

   examination 
  of 
  the 
  samples 
  showed 
  but 
  little 
  quartz 
  within 
  

   those 
  limits. 
  The 
  limestone 
  of 
  Black 
  River 
  age 
  has 
  some 
  

   shale 
  beds. 
  The 
  limestones 
  considered 
  to 
  be 
  of 
  Stones 
  River 
  

   age 
  are 
  more 
  or 
  less 
  argillaceous 
  and 
  even 
  textured, 
  and 
  vary 
  

   from 
  light 
  dove 
  color 
  to 
  nearly 
  black. 
  They 
  appear 
  to 
  be 
  

   devoid 
  of 
  fossils. 
  There 
  is 
  some 
  shaly 
  limestone 
  in 
  the 
  lower 
  

   portion. 
  

  

  The 
  white 
  granular 
  limestone 
  immediately 
  under 
  the 
  lime- 
  

   stone 
  last 
  described 
  occupies 
  the 
  position 
  usually 
  assigned 
  to 
  

   the 
  top 
  of 
  the 
  St. 
  Peter. 
  The 
  samples 
  from 
  the 
  upper 
  por- 
  

   tion 
  contain 
  little 
  quartz 
  and 
  the 
  first 
  sandstone 
  bed 
  penetrated 
  

   lies 
  150 
  feet 
  lower. 
  The 
  succeeding 
  190 
  feet 
  consist 
  of 
  alter- 
  

   nating 
  layers 
  of 
  siliceous 
  limestone 
  and 
  white 
  sandstone, 
  with 
  

   a 
  thin 
  layer 
  of 
  clay 
  near 
  the 
  base. 
  This 
  gives 
  the 
  unusual 
  

   thickness 
  of 
  406 
  feet 
  for 
  the 
  St. 
  Peter. 
  

  

  Some 
  oil 
  was 
  found 
  in 
  the 
  Norris 
  well 
  in 
  the 
  interval 
  rang- 
  

   ing 
  from 
  1,900 
  to 
  1,960 
  feet 
  in 
  depth. 
  This 
  may 
  have 
  come 
  

   from 
  the 
  lowest 
  bed 
  tentatively 
  assigned 
  to 
  the 
  Stones 
  River, 
  

   but 
  it 
  seems 
  more 
  probable 
  that 
  the 
  horizon 
  belongs 
  in 
  the 
  St. 
  

   Peter. 
  No 
  oil 
  was 
  reported 
  at 
  this 
  horizon 
  in 
  the 
  Grubb 
  well. 
  

   The 
  " 
  Blue 
  Lick 
  " 
  water, 
  a 
  bittern 
  characteristic 
  of 
  the 
  St. 
  

   Peter, 
  was 
  found 
  about 
  30 
  feet 
  lower 
  than 
  the 
  oil. 
  

  

  There 
  is 
  little 
  doubt 
  that 
  the 
  dark 
  dolomitic 
  limestone 
  found 
  

   at 
  2,300 
  feet 
  is 
  Upper 
  Cambrian. 
  No 
  recognizable 
  fossils 
  were 
  

   discovered, 
  but 
  the 
  rock 
  has 
  an 
  abundance 
  of 
  glauconite. 
  The 
  

   underlying 
  sandstone 
  having 
  a 
  thickness 
  of 
  395 
  feet 
  rests 
  on 
  

   pre-Cambrian 
  rock. 
  

  

  The 
  pre-Cambrian 
  rock 
  was 
  penetrated 
  to 
  a 
  depth 
  of 
  210 
  

   feet. 
  The 
  water 
  from 
  the 
  overlying 
  sandstone 
  was 
  cased 
  off, 
  

   and 
  it 
  was 
  necessary 
  to 
  pour 
  in 
  water 
  to 
  facilitate 
  drilling. 
  

   Progress 
  was 
  slow 
  in 
  the 
  hard 
  rock 
  which 
  played 
  havoc 
  with 
  

   the 
  drill. 
  The 
  bailer 
  was 
  run 
  four 
  times 
  each 
  day 
  giving 
  

  

  