﻿216 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  9 
  Pterinopecten 
  cf. 
  Yertumnus 
  Hall 
  (rr) 
  

  

  10 
  (?) 
  Nuculites 
  sp. 
  (rr) 
  

  

  Large 
  specimen 
  in 
  shape 
  somewhat 
  like 
  N. 
  cuneiformis 
  

   (Con.) 
  though 
  considerably 
  longer 
  and 
  showing 
  concentric 
  

   striae. 
  

  

  These 
  fossiliferous 
  layers 
  are 
  apparently 
  in 
  the 
  same 
  general 
  

   stratigraphic 
  position 
  as 
  the 
  loose 
  fossils 
  found 
  on 
  the 
  hill 
  north 
  

   of 
  West 
  Gilboa 
  toward 
  Ruth 
  and 
  in 
  the 
  hill 
  northeast 
  of 
  Gilboa 
  

   which 
  will 
  be 
  described 
  after 
  this 
  section. 
  They 
  are 
  clearly 
  

   above 
  the 
  zones 
  of 
  red 
  shales 
  shown 
  in 
  the 
  gorge 
  above 
  the 
  

   Manorkill 
  falls 
  and 
  about 
  200 
  feet 
  above 
  the 
  lower 
  one. 
  Suc- 
  

   ceeding 
  zone 
  A 
  4 
  for 
  310 
  feet 
  to 
  the 
  top 
  of 
  the 
  hill 
  730 
  feet 
  above 
  

   the 
  base 
  of 
  the 
  section 
  the 
  rocks 
  are 
  partly 
  covered, 
  but 
  

   there 
  are 
  frequent 
  exposures 
  showing 
  an 
  alternation 
  of 
  grayish 
  

   sandstones 
  with 
  red 
  shales 
  and 
  sandstones. 
  The 
  thick- 
  

   ness 
  and 
  alternation 
  of 
  these 
  rocks 
  are 
  shown 
  on 
  the 
  

   accompanying 
  diagrammatic 
  section 
  and 
  their 
  lithological 
  

   characters 
  agree 
  either 
  with 
  those 
  of 
  the 
  Oneonta 
  or 
  

   Catskill 
  formations. 
  No 
  fossils 
  were 
  found 
  above 
  A 
  4 
  except 
  trails 
  

   of 
  worms 
  on 
  a 
  loose 
  specimen 
  of 
  grayish 
  sandstone. 
  The 
  accom- 
  

   panying 
  " 
  Geological 
  section 
  along 
  the 
  Schoharie 
  river 
  from 
  Scho- 
  

   harie 
  to 
  Gilboa 
  " 
  is 
  intended 
  to 
  give 
  an 
  idea 
  of 
  the 
  topographic 
  

   outline 
  of 
  the 
  hills 
  to 
  the 
  west 
  of 
  the 
  Schoharie 
  river 
  as 
  well 
  as 
  

   the 
  order 
  and 
  extent 
  of 
  the 
  formations. 
  On 
  account 
  of 
  the 
  lack 
  

   of 
  a 
  topographic 
  map 
  of 
  the 
  Schoharie 
  valley 
  region 
  it 
  was 
  diffi- 
  

   cult 
  to 
  represent 
  this 
  section 
  with 
  any 
  great 
  accuracy 
  and 
  it 
  is 
  to 
  

   be 
  regarded 
  as 
  a 
  somewhat 
  generalized 
  section. 
  It 
  is 
  thought, 
  

   however, 
  that 
  it 
  will 
  give 
  an 
  impression 
  of 
  the 
  rugged 
  nature 
  of 
  

   this 
  region 
  and 
  a 
  somewhat 
  graphic 
  representation 
  of 
  the 
  several 
  

   formations 
  which 
  have 
  already 
  been 
  described. 
  

  

  LXXVO 
  1 
  " 
  2 
  . 
  About 
  one 
  mile 
  below 
  Gilboa 
  the 
  Plattenkill 
  or 
  

   Flat 
  creek 
  enters 
  the 
  Schoharie 
  river 
  from 
  the 
  east. 
  Between 
  this 
  

   creek 
  and 
  the 
  Schoharie 
  river 
  is 
  a 
  high 
  hill 
  with 
  a 
  very 
  steep 
  

   bank 
  toward 
  the 
  river. 
  On 
  the 
  southern 
  end 
  of 
  this 
  hill 
  to 
  the 
  

   west 
  of 
  the 
  Plattenkill 
  and 
  one 
  and 
  one 
  half 
  miles 
  northeast 
  of 
  

   Gilboa 
  are 
  greenish 
  gray 
  massive 
  sandstones 
  (O 
  1 
  ) 
  while 
  in 
  shales 
  

  

  