﻿D. 
  D. 
  Condit—Deep 
  Wells 
  at 
  Findlay, 
  Ohio. 
  127 
  

  

  Depth 
  Thick- 
  

   in 
  feet 
  ness 
  

  

  Upper 
  Cambrian 
  : 
  

  

  (c) 
  Limestone, 
  dolomitic, 
  dark, 
  minutely 
  

  

  granular. 
  Much 
  green 
  glauconitic 
  

  

  material 
  and 
  some 
  quartz. 
  Basal 
  

  

  portion 
  sandy 
  and 
  brownish 
  gray. 
  

  

  Some 
  of 
  the 
  rock 
  particles 
  have 
  vein- 
  

   lets 
  of 
  calcite 
  2300-2360 
  60 
  

  

  (b) 
  Sandstone, 
  impure, 
  arkosic 
  in 
  upper 
  

  

  portion. 
  Garnet, 
  orthoclase, 
  micro- 
  

  

  cline, 
  and 
  plagioclase 
  are 
  plentiful. 
  

  

  Usual 
  diameter 
  of 
  grain 
  0*3 
  to 
  0-5 
  mm 
  . 
  

  

  Samples 
  from 
  the 
  Norris 
  well 
  show 
  

  

  a 
  white 
  sand 
  of 
  angular 
  grain 
  that 
  

  

  drilled 
  fine, 
  indicating 
  a 
  quartzite.. 
  2360-2755 
  395 
  

   (a) 
  Clay, 
  top 
  portion 
  red, 
  middle 
  green, 
  

  

  and 
  base 
  gray 
  . 
  2755-2770 
  15 
  

  

  Pre 
  -Cambrian 
  : 
  

  

  Granite, 
  probably 
  gneissoid. 
  Biotite 
  

  

  and 
  green 
  hornblende 
  principal 
  acces- 
  

   sory 
  minerals, 
  with 
  a 
  considerable 
  

  

  amount 
  of 
  titanite 
  and 
  apatite 
  and 
  

  

  a 
  lesser 
  amount 
  of 
  garnet 
  2770-2980 
  

  

  A 
  deep 
  well 
  drilled 
  at 
  Waverly 
  in 
  southern 
  Ohio 
  is 
  of 
  inter- 
  

   est 
  in 
  this 
  connection, 
  and 
  a 
  condensed 
  section 
  with 
  major 
  

   headings 
  omitted 
  is 
  given 
  for 
  comparison. 
  The 
  record 
  was 
  

   studied 
  by 
  R. 
  S. 
  Bassler, 
  whose 
  description 
  appears 
  in 
  volume 
  

   xxxi 
  of 
  this 
  Journal, 
  pages 
  19-24. 
  

  

  Geologic 
  section 
  of 
  the 
  Waverly 
  well. 
  

  

  Thickness 
  

   in 
  feet 
  Depth 
  

  

  Fine 
  grained 
  drab 
  sandstone, 
  forming 
  lower 
  part 
  

  

  of 
  Waverly 
  series 
  35 
  0-35 
  

  

  Bituminous, 
  fissile 
  black 
  Ohio 
  shale 
  450 
  35-485 
  

  

  Mainly 
  white, 
  fine-grained 
  sandstone 
  with 
  traces 
  

   of 
  white 
  limestone. 
  Red 
  and 
  brown 
  calca- 
  

   reous 
  sandstones 
  of 
  Clinton 
  age 
  in 
  basal 
  

   portion 
  : 
  415 
  485-900 
  

  

  Blue 
  shale 
  and 
  fragments 
  of 
  blue 
  limestone, 
  

   Richmond 
  and 
  Maysville 
  age, 
  with 
  proba- 
  

   bly 
  upper 
  Eden 
  shales 
  represented 
  1065 
  900-1965 
  

  

  Blue 
  shales 
  containing 
  Middle 
  Eden 
  fossils 
  . 
  _ 
  . 
  55 
  1965-2020 
  

  

  Unfossiliferous 
  blue 
  and 
  greenish 
  shale, 
  prob- 
  

   ably 
  lower 
  Eden 
  and 
  Utica 
  80 
  2020-2100 
  

  

  Blue 
  clay 
  and 
  shale 
  with 
  a 
  few 
  fragments 
  of 
  blue 
  

  

  limestone. 
  Lower 
  Trenton 
  fossils 
  noted 
  _ 
  . 
  125 
  2100-2225 
  

  

  White, 
  clayey, 
  and 
  dove-colored 
  unfossilifer- 
  

   ous 
  limestones 
  and 
  blue 
  argillaceous 
  lime- 
  

   stone 
  at 
  bottom 
  (Lowville 
  and 
  Stones 
  River) 
  600 
  2225-2825 
  

  

  