﻿CLASSIFICATION, 
  ETC. 
  OF 
  HAMILTON 
  AND 
  CHEMUNG 
  SERIES 
  263 
  

  

  below 
  the 
  bridge 
  at 
  South 
  Westerlo 
  are 
  ledges 
  of 
  rather 
  greenish 
  

   sandstone 
  and 
  some 
  shales 
  in 
  which 
  no 
  fossils 
  were 
  found. 
  These 
  

   rocks 
  are 
  100 
  feet 
  or 
  more 
  below 
  the 
  red 
  sandstone 
  on 
  top 
  of 
  the 
  

   ridge 
  east 
  of 
  the 
  creek 
  and 
  are 
  in 
  the 
  Sherburne 
  formation 
  which 
  

   extends 
  down 
  the 
  creek 
  into 
  the 
  northern 
  part 
  of 
  Greenville 
  

   township 
  in 
  Greene 
  co. 
  

  

  The 
  exposures 
  in 
  Westerlo 
  and 
  Rensselaerville 
  townships 
  show 
  

   that 
  red 
  and 
  gray 
  rocks 
  in 
  lithological 
  characters 
  identical 
  with 
  

   the 
  typical 
  Oneonta 
  formation 
  have 
  replaced 
  the 
  Ithaca 
  formation, 
  

   and 
  that 
  the 
  reds 
  appear 
  at 
  lower 
  and 
  lower 
  stratigraphic 
  horizons 
  

   as 
  the 
  strike 
  of 
  the 
  formations 
  is 
  followed 
  southeasterly 
  from 
  

   Schoharie 
  co. 
  

  

  The 
  line 
  of 
  division 
  between 
  the 
  Hamilton 
  and 
  Sherburne 
  forma- 
  

   tions 
  enters 
  Kensselaerville 
  from 
  Berne 
  township 
  about 
  north 
  of 
  

   Rensselaerville 
  village, 
  runs 
  southerly 
  into 
  the 
  Switzkill 
  valley, 
  

   then 
  about 
  easterly 
  around 
  the 
  northern 
  end 
  of 
  the 
  ridge 
  to 
  the 
  

   east 
  of 
  Rensselaerville 
  village 
  and 
  then 
  in 
  a 
  general 
  southeasterly 
  

   direction 
  across 
  Westerlo 
  township. 
  The 
  line 
  is 
  somewhat 
  to 
  the 
  

   west 
  of 
  Westerlo 
  (Chesterville) 
  and 
  Dormansville 
  and 
  leaves 
  the 
  

   township 
  near 
  its 
  southeastern 
  corner, 
  three 
  miles 
  east 
  of 
  iSouth 
  

   Westerlo. 
  The 
  drift 
  conceals 
  the 
  older 
  rocks 
  so 
  thoroughly 
  over 
  

   a 
  large 
  part 
  of 
  Westerlo 
  that 
  it 
  is 
  difficult 
  to 
  trace 
  the 
  line 
  of 
  

   separation 
  between 
  the 
  different 
  formations. 
  The 
  red 
  shale 
  and 
  

   sandstone 
  at 
  the 
  base 
  of 
  the 
  Oneonta 
  formation 
  is 
  a 
  much 
  more 
  

   irregular 
  line 
  than 
  the 
  one 
  between 
  the 
  Hamilton 
  and 
  Sherburne 
  

   formations. 
  The 
  red 
  shale 
  enters 
  Rensselaerville 
  township 
  near 
  

   the 
  middle 
  of 
  its 
  northern 
  line 
  to 
  the 
  west 
  of 
  the 
  Switzkill, 
  shows 
  

   in 
  the 
  gorge 
  of 
  Tenmile 
  creek 
  west 
  of 
  Rensselaerville 
  village 
  and 
  

   then 
  runs 
  about 
  southerly 
  on 
  the 
  eastern 
  side 
  of 
  the 
  hill 
  to 
  the 
  

   west 
  of 
  this 
  creek 
  to 
  its 
  end 
  east 
  of 
  Oak 
  Hill 
  in 
  the 
  northern 
  part 
  

   of 
  Durham 
  township 
  Greene 
  co. 
  Then 
  it 
  extends 
  up 
  the 
  

   valley 
  of 
  the 
  Catskill 
  across 
  the 
  line 
  into 
  Rensselaerville 
  town- 
  

   ship 
  below 
  Cooksburg 
  where 
  it 
  crosses 
  the 
  creek 
  and 
  follows 
  

   the 
  western 
  side 
  to 
  below 
  Eagle 
  bridge 
  more 
  than 
  one 
  mile 
  below 
  

   Oakhill, 
  then 
  it 
  crosses 
  the 
  Catskill 
  back 
  to 
  the 
  east 
  and 
  fol- 
  

   lows 
  the 
  western 
  side 
  of 
  the 
  ridge 
  east 
  of 
  Tenmile 
  creek 
  to 
  its 
  

  

  