﻿204 
  .NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  weathers 
  to 
  a 
  light 
  gray 
  color 
  and 
  resembles 
  in 
  lithologic 
  appear- 
  

   ance 
  the 
  Oneonta 
  sandstone. 
  The 
  base 
  of 
  this 
  ledge 
  is 
  barometri- 
  

   cally 
  640 
  feet 
  above 
  the 
  Schoharie 
  river, 
  which 
  is 
  only 
  10 
  feet 
  

   lower 
  than 
  that 
  of 
  the 
  similar 
  ledge 
  in 
  section 
  XXVIII 
  D 
  5 
  . 
  On 
  the 
  

   surface 
  not 
  far 
  above 
  the 
  base 
  are 
  loose 
  blocks 
  of 
  red 
  .sandstone, 
  

   but 
  it 
  was 
  not 
  found 
  in 
  place. 
  Along 
  the 
  road 
  to 
  the 
  west 
  the 
  

   rocks 
  are 
  largely 
  covered 
  on 
  the 
  high 
  ground 
  in 
  the 
  western 
  part 
  

   of 
  Blenheim 
  and. 
  eastern 
  part 
  of 
  Jefferson, 
  But 
  at 
  the 
  summit 
  of 
  

   the 
  road 
  in 
  the 
  eastern 
  part 
  of 
  Jefferson 
  there 
  is 
  plenty 
  of 
  the 
  

   coarse, 
  greenish 
  gray 
  sandstone 
  loose 
  on 
  the 
  surface 
  and 
  the 
  long 
  

   lines 
  of 
  stone 
  walls 
  are 
  constructed 
  largely 
  of 
  it. 
  In 
  altitude 
  

   this 
  locality 
  is 
  barometrically 
  some 
  650 
  feet 
  above 
  H 
  6 
  or 
  1290 
  

   feet 
  above 
  the 
  Schoharie 
  river 
  at 
  North 
  Blenheim; 
  but 
  if 
  there 
  be 
  

   a 
  dip 
  of 
  80 
  feet 
  a 
  mile 
  to 
  the 
  south 
  of 
  east, 
  as 
  along 
  Panther 
  

   creek, 
  then 
  the 
  thickness 
  of 
  the 
  rocks 
  would 
  not 
  be 
  more 
  than 
  350 
  

   feet 
  for 
  this 
  upper 
  part 
  of 
  the 
  section. 
  

  

  XXVIII 
  E 
  1 
  . 
  By 
  the 
  side 
  of 
  the 
  river 
  road 
  about 
  one 
  and 
  one 
  

   half 
  miles 
  south 
  of 
  North 
  Blenheim 
  and 
  345 
  feet 
  higher 
  are 
  bluish, 
  

   argillaceous 
  shales 
  which 
  are 
  fairly 
  fossiliferous. 
  They 
  contain 
  

   specimens 
  of: 
  

  

  1 
  Spirifer 
  mucronatus 
  (Con.) 
  Bill. 
  (rr) 
  

  

  2 
  Clionetes 
  setigera 
  Hall 
  (rr) 
  

  

  3 
  Tropidoleptus 
  carinatus 
  (Con.) 
  Hall 
  , 
  (rr) 
  

  

  4 
  Grammysia 
  sp. 
  (rr) 
  

  

  Only 
  fragments. 
  

  

  XXVIII 
  B 
  1 
  . 
  On 
  the 
  eastern 
  side 
  of 
  the 
  Schoharie 
  river 
  below 
  

   North 
  Blenheim 
  and 
  in 
  the 
  northeastern 
  part 
  of 
  the 
  township 
  is 
  a 
  

   precipitous 
  wall 
  of 
  rock 
  out 
  of 
  which 
  the 
  highway 
  has 
  been 
  cut; 
  

   a 
  locality 
  known 
  as 
  the 
  " 
  dugway." 
  The 
  rocks 
  consist 
  of 
  soft, 
  

   blue, 
  argillaceous 
  shales 
  with 
  thin 
  layers 
  of 
  sandstone. 
  The 
  

   irregular 
  layers 
  of 
  shales 
  contain 
  some 
  rather 
  poorly 
  preserved 
  

   fossils; 
  but 
  the 
  smooth 
  shales 
  seem 
  to 
  be 
  barren. 
  Toward 
  the 
  

   top^ 
  of 
  the 
  cliff 
  is 
  a 
  layer 
  which 
  has 
  somewhat 
  concretionary 
  

   structure, 
  similar 
  to 
  that 
  noted 
  in 
  other 
  localities 
  in 
  the 
  upper 
  

   Hamilton 
  and 
  succeeding 
  formations. 
  This 
  cliff 
  is 
  shown 
  to 
  be 
  

  

  