﻿Report 
  of 
  the 
  State 
  Geologist. 
  241 
  

  

  At 
  Le 
  Roy, 
  Lime 
  Rock 
  and 
  other 
  localities 
  very 
  large 
  quanti- 
  

   ties 
  of 
  Corniferous 
  limestone 
  are 
  quarried 
  from 
  the 
  upper 
  beds 
  

   for 
  building 
  stone 
  and 
  to 
  be 
  burned 
  into 
  quicklime. 
  The 
  large 
  

   amount 
  of 
  chert 
  in 
  the 
  lower 
  beds 
  makes 
  them 
  unsuitable 
  for 
  

   those 
  purposes. 
  The 
  Onondaga 
  limestone 
  is 
  quarried 
  in 
  many 
  

   places. 
  

  

  No 
  wells 
  in 
  which 
  rock 
  salt 
  has 
  been 
  found 
  are 
  located 
  on 
  out- 
  

   crops 
  of 
  the 
  Corniferous 
  limestone, 
  nor 
  the 
  rocks 
  below 
  it, 
  in 
  the 
  

   Western 
  New 
  York 
  salt 
  fields. 
  

  

  At 
  1,00 
  ! 
  feet 
  from 
  the 
  surface 
  the 
  bluish-gray 
  Onondaga 
  lime- 
  

   stone 
  was 
  found 
  to 
  overlie 
  a 
  stratum 
  of 
  coarse, 
  conglomerate 
  rock 
  

   composed 
  of 
  rounded 
  boulders 
  and 
  pebbles 
  of 
  dark 
  brown 
  

   hydraulic 
  limestone 
  imbedded 
  in 
  a 
  dark 
  sandstone, 
  which 
  is 
  

   quite 
  green 
  in 
  some 
  parts 
  of 
  the 
  upper 
  portion 
  of 
  the 
  stratum, 
  

   but 
  in 
  the 
  lower 
  portion 
  becomes 
  gray. 
  The 
  water 
  lime 
  pebbles 
  

   also 
  become 
  much 
  lighter 
  colored. 
  

  

  The 
  line 
  of 
  separation 
  between 
  this 
  stratum 
  and 
  the 
  overlying 
  

   Onondaga 
  limestone 
  is 
  very 
  distinct, 
  but 
  on 
  the 
  lower 
  side 
  the 
  

   change 
  is 
  less 
  abrupt 
  and 
  the 
  line 
  of 
  separation 
  from 
  the 
  choco- 
  

   late 
  colored 
  hydraulic 
  limestone 
  beneath 
  is 
  very 
  uneven. 
  

  

  The 
  average 
  thickness 
  of 
  the 
  conglomerate 
  in 
  the 
  shaft 
  was 
  

   about 
  five 
  feet 
  ; 
  at 
  the 
  Lehigh 
  shaft, 
  and 
  at 
  the 
  Retsof 
  shaft 
  the 
  

   stratum 
  was 
  found, 
  preserving 
  the 
  same 
  general 
  character 
  but 
  

   reduced 
  in 
  thickness 
  to 
  about 
  four 
  inches. 
  

  

  At 
  the 
  Greigsville 
  shaft 
  there 
  was 
  only 
  sufficient 
  thickness 
  to 
  

   mark 
  the 
  horizon. 
  

  

  At 
  Phelps, 
  in 
  Ontario 
  county, 
  it 
  is 
  exposed 
  in 
  the 
  bed 
  of 
  

   Flint 
  creek, 
  where 
  it 
  is 
  about, 
  two 
  and 
  one-half 
  feet 
  thick. 
  

  

  No 
  fossils 
  were 
  observed 
  in 
  the 
  water 
  lime 
  pebbles, 
  but 
  the 
  

   cementing 
  sand 
  rock 
  contained 
  a 
  few 
  specimens. 
  

  

  The 
  species 
  determined 
  appear 
  to 
  indicate 
  that 
  this 
  layer 
  may 
  

   be 
  the 
  equivalent 
  of 
  both 
  the 
  Schoharie 
  grit 
  and 
  the 
  Oriskany 
  

   sandstone. 
  

  

  The 
  magnesian 
  limestones, 
  some 
  thin 
  layers 
  of 
  which 
  are 
  

   water 
  lime, 
  and 
  hard 
  shales 
  between 
  the 
  Oriskany 
  sandstone 
  and 
  

   the 
  " 
  Gypsum 
  Beds," 
  are 
  112 
  feet 
  thick 
  in 
  the 
  Livonia 
  shaft, 
  

   sixty-five 
  feet 
  in 
  the 
  Retsof 
  shaft 
  and 
  sixty 
  four 
  feet 
  at 
  the 
  

   Lehigh 
  shaft. 
  In 
  the 
  diagrams 
  of 
  the 
  shaft 
  sections, 
  these 
  rocks 
  

   31 
  

  

  