﻿30 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  very 
  gradually 
  as 
  a 
  rule. 
  The 
  volume 
  of 
  ore 
  contained 
  by 
  a 
  given 
  

   area 
  can 
  thus 
  be 
  ascertained 
  with 
  reasonable 
  accuracy 
  from 
  observa- 
  

   tions 
  taken 
  at 
  wide 
  intervals, 
  even 
  of 
  several 
  miles 
  under 
  favorable 
  

   circumstances. 
  

  

  The 
  present 
  exploratory 
  work 
  was 
  performed 
  entirely 
  with 
  a 
  

   diamond 
  core 
  drill. 
  By 
  this 
  means 
  a 
  core, 
  i 
  inch 
  in 
  diameter, 
  rep- 
  

   resenting 
  a 
  section 
  of 
  the 
  rocks 
  and 
  ore 
  penetrated 
  was 
  secured. 
  

   The 
  cost 
  of 
  drilling 
  has 
  been 
  somewhat 
  greater 
  than 
  if 
  the 
  holes 
  had 
  

   been 
  put 
  down 
  without 
  attempting 
  to 
  obtain 
  a 
  core, 
  but 
  the 
  increased 
  

   expense 
  may 
  be 
  considered 
  to 
  be 
  counterbalanced 
  by 
  greater 
  accu- 
  

   racy 
  and 
  detail 
  in 
  the 
  results. 
  1 
  

  

  With 
  the 
  meager 
  information 
  to 
  be 
  had 
  from 
  outcrops, 
  the 
  drill 
  

   cores 
  have 
  served 
  also 
  to 
  clear 
  up 
  many 
  doubtful 
  points 
  regarding 
  

   Clinton 
  stratigraphy. 
  The 
  succession 
  of 
  rocks 
  has 
  now 
  been 
  estab- 
  

   lished 
  with 
  satisfactory 
  completeness 
  throughout 
  the 
  belt. 
  

  

  The 
  holes 
  to 
  the 
  number 
  of 
  8 
  in 
  all 
  were 
  put 
  down 
  between 
  Wall- 
  

   ington, 
  Wayne 
  co., 
  and 
  Verona 
  Station, 
  Oneida 
  co. 
  The 
  average 
  

   interval 
  between 
  successive 
  holes 
  may 
  be 
  stated 
  at 
  about 
  10 
  miles. 
  

   Most 
  of 
  the 
  sites 
  were 
  selected 
  with 
  a 
  view 
  to 
  striking 
  the 
  ore 
  at 
  

   depths 
  between 
  ioo 
  and 
  200 
  feet, 
  a 
  convenient 
  depth 
  for 
  the 
  drill 
  

   as 
  well 
  as 
  one 
  that 
  permits 
  estimation 
  of 
  a 
  large 
  volume 
  of 
  the 
  

   deposits. 
  Under 
  normal 
  conditions 
  of 
  dip 
  and 
  surface 
  topography 
  

   the 
  holes 
  would 
  be 
  from 
  1 
  to 
  3 
  miles 
  from 
  the 
  outcrop, 
  and 
  their 
  

   results 
  can 
  thus 
  be 
  accepted 
  with 
  a 
  degree 
  of 
  safety 
  as 
  an 
  average- 
  

   for 
  about 
  twice 
  that 
  width 
  across 
  the 
  dip. 
  

  

  The 
  detailed 
  sections 
  for 
  each 
  drill 
  hole 
  are 
  shown 
  in 
  the 
  tabula- 
  

   tions 
  that 
  follow. 
  From 
  their 
  consideration, 
  together 
  with 
  the 
  facts 
  

   hitherto 
  ascertained, 
  it 
  has 
  been 
  possible 
  to 
  prepare 
  a 
  general 
  survey 
  

   of 
  the 
  ore 
  distribution 
  throughout 
  the 
  belt. 
  

  

  Wallington, 
  Wayne 
  co. 
  The 
  site 
  of 
  the 
  drill 
  hole 
  is 
  on 
  the 
  

   farm 
  of 
  Isaac 
  Du 
  Bois 
  about 
  y 
  2 
  mile 
  west 
  of 
  the 
  trolley 
  station 
  

   at 
  Wallington, 
  on 
  the 
  west 
  side 
  of 
  Salmon 
  creek 
  and 
  approximately 
  

   5 
  rods 
  north 
  of 
  the 
  highway 
  leading 
  from 
  Wallington 
  to 
  Sodus 
  

   village. 
  The 
  locality 
  lies 
  i^4 
  miles 
  norjdi 
  of 
  the 
  outcropping 
  edge 
  of 
  

   the 
  Lockport 
  dolomite, 
  which 
  is 
  shown 
  in 
  the 
  vicinity 
  of 
  Sodus 
  

   Center, 
  and 
  2^8 
  miles 
  directly 
  south 
  of 
  the 
  site 
  of 
  the 
  old 
  Sodus 
  iron 
  

   furnace 
  on 
  Salmon 
  creek, 
  near 
  which 
  the 
  Clinton 
  strata 
  with 
  a 
  thin 
  

   seam 
  of 
  ore 
  are 
  exposed. 
  

  

  1 
  It 
  may 
  be 
  mentioned 
  that 
  the 
  diamond 
  drill 
  proved 
  to 
  be 
  well 
  adapted 
  for 
  the 
  work. 
  

   Owing 
  to 
  the 
  frequent 
  alternations 
  of 
  hard 
  and 
  soft 
  strata 
  characteristic 
  of 
  the 
  forma- 
  

   tion, 
  it 
  was 
  thought 
  some 
  difficulty 
  might 
  be 
  encountered 
  in 
  removing 
  a 
  core, 
  but 
  in 
  

   every 
  case 
  a 
  nearly 
  complete 
  section 
  was 
  obtained. 
  The 
  occasional 
  loss 
  of 
  a 
  part 
  

   of 
  the 
  core 
  due 
  to 
  grinding 
  of 
  the 
  harder 
  material 
  in 
  the 
  " 
  core 
  barrel 
  " 
  entailed 
  

   no 
  serious 
  discrepancies 
  in 
  measurements, 
  since 
  a 
  constant 
  check 
  was 
  maintained 
  by 
  

   observations 
  of 
  the 
  lengths 
  of 
  the 
  drill 
  rods 
  in 
  use 
  and 
  the 
  character 
  of 
  the 
  rock 
  

   material 
  washed 
  up 
  from 
  below. 
  

  

  