﻿S 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  second 
  iron 
  ore 
  bed; 
  5 
  Upper 
  limestone. 
  The 
  exposures 
  of 
  iron 
  

   ore 
  existing 
  at 
  the 
  time 
  are 
  recorded 
  in 
  detail 
  by 
  both 
  Hall 
  and 
  

   Vanuxem 
  whose 
  reports, 
  also, 
  are 
  replete 
  with 
  information 
  relat- 
  

   ing 
  to 
  the 
  character, 
  thickness 
  and 
  other 
  features 
  of 
  the 
  beds. 
  

  

  The 
  portion 
  of 
  the 
  Clinton 
  belt 
  included 
  in 
  the 
  limits 
  of 
  the 
  

   Rochester 
  quadrangle, 
  about 
  13 
  miles 
  from 
  east 
  to 
  west, 
  has 
  

   been 
  mapped 
  by 
  C. 
  A. 
  Hartnagel. 
  The 
  map 
  is 
  on 
  the 
  usual 
  

   scale 
  of 
  the 
  folio 
  sheets 
  (1 
  mile 
  to 
  the 
  inch) 
  which 
  are 
  in 
  prep- 
  

   aration 
  for 
  the 
  whole 
  State. 
  In 
  the 
  report 
  accompanying 
  the 
  

   map 
  the 
  five 
  subdivisions 
  of 
  Hall 
  are 
  described 
  under 
  the 
  local 
  

   names: 
  Sodus 
  shale, 
  Furnaceville 
  iron 
  ore, 
  Wolcott 
  limestone, 
  

   Williamson 
  shale, 
  Irondequoit 
  limestone. 
  

  

  The 
  papers 
  by 
  C. 
  H. 
  Smyth 
  jr, 
  contain 
  an 
  accurate 
  and 
  ex- 
  

   haustive 
  exposition 
  of 
  the 
  origin 
  of 
  the 
  Clinton 
  ores 
  — 
  by 
  far 
  the 
  

   most 
  satisfactory 
  that 
  has 
  appeared. 
  The 
  evidences 
  Professor 
  

   Smyth 
  has 
  brought 
  to 
  bear 
  upon 
  the 
  question, 
  from 
  the 
  stand- 
  

   points 
  of 
  geology 
  and 
  chemistry, 
  must 
  be 
  convincing 
  to 
  any 
  one 
  

   familiar 
  with 
  the 
  local 
  deposits. 
  For 
  these, 
  at 
  least, 
  the 
  view 
  of 
  

   secondary 
  replacement 
  which 
  has 
  been 
  advanced 
  by 
  some 
  g*eolo- 
  

   gists, 
  may 
  be 
  regarded 
  as 
  completely 
  disproved. 
  A 
  discussion 
  of 
  

   the 
  subject 
  of 
  origin, 
  with 
  a 
  statement 
  of 
  Professor 
  Smyth's 
  

   views, 
  is 
  given 
  in 
  a 
  subsequent 
  chapter. 
  

  

  DISTRIBUTION 
  OF 
  THE 
  CLINTON 
  FORMATION 
  

  

  The 
  Clinton 
  strata 
  — 
  ■ 
  comprising 
  shales, 
  limestones, 
  sand- 
  

   stones 
  and 
  interbedded 
  layers 
  of 
  iron 
  ore 
  — 
  are 
  found 
  in 
  a 
  single 
  

   belt 
  which 
  extends 
  from 
  the 
  eastern 
  central 
  part 
  of 
  the 
  State 
  

   to 
  the 
  Niagara 
  river 
  and 
  thence 
  for 
  some 
  distance 
  into 
  the 
  

   Province 
  of 
  Ontario. 
  The 
  length 
  of 
  the 
  belt, 
  included 
  within 
  

   the 
  limits 
  of 
  the 
  State, 
  is 
  about 
  225 
  miles. 
  

  

  On 
  the 
  east 
  the 
  strata 
  can 
  be 
  traced 
  into 
  Otsego 
  county, 
  where 
  

   they 
  thin 
  out 
  to 
  disappearance, 
  though 
  they 
  were" 
  formerly 
  sup- 
  

   posed 
  to 
  continue 
  southeasterly 
  into 
  Schoharie 
  and 
  Albany 
  

   counties. 
  From 
  field 
  observations 
  made 
  recently 
  by 
  one 
  of 
  the 
  

   writers 
  (C. 
  A. 
  Hartnagel) 
  it 
  would 
  appear 
  that 
  they 
  terminate 
  

   in 
  the 
  town 
  of 
  Cherry 
  Valley, 
  a 
  short 
  distance 
  east 
  of 
  Salt 
  

   Springville. 
  This 
  is 
  undoubtedly 
  the 
  limit 
  of 
  their 
  deposition 
  

   in 
  eastern 
  New 
  York. 
  

  

  West 
  from 
  Otsego 
  county 
  the 
  Clinton 
  belt 
  passes 
  successively 
  

   through 
  Herkimer, 
  Oneida, 
  Madison, 
  Onondaga, 
  Oswego, 
  

   Cayuga, 
  Wayne, 
  Monroe, 
  Orleans 
  and 
  Niagara 
  counties 
  ; 
  it 
  

  

  