﻿CLAYS 
  OF 
  NEW 
  YORK 
  579 
  

  

  From 
  Glasco 
  to 
  Rondoiit 
  the 
  terrace, 
  which 
  is 
  perhaps 
  one 
  eighth 
  

   of 
  a 
  mile 
  broad 
  at 
  Glasco, 
  narrows 
  as 
  it 
  nears 
  Rondout, 
  and 
  has 
  

   an 
  average 
  hight 
  of 
  150 
  feet. 
  The 
  clays, 
  so 
  far 
  as 
  could 
  be 
  ascer- 
  

   tained, 
  lie 
  on 
  the 
  upturned 
  edges 
  of 
  the 
  Utica 
  shale. 
  

  

  At 
  the 
  rear 
  of 
  A. 
  S. 
  Staples's 
  yard 
  hardpan 
  underlies 
  the 
  clay. 
  

   The 
  overlying 
  material 
  at 
  this 
  locality 
  consists 
  of 
  sand 
  and 
  gravel, 
  

   in 
  many 
  instances 
  stratified 
  and 
  sometimes 
  cross-bedded. 
  The 
  

   sand 
  in 
  some 
  spots 
  is 
  10 
  to 
  15 
  feet 
  thick 
  and 
  fine 
  enough 
  to 
  be 
  

   blo^vn 
  by 
  the 
  wind. 
  

  

  At 
  Port 
  Ewen 
  the 
  clay 
  is 
  mostly 
  blue, 
  resting 
  on 
  a 
  mass 
  of 
  

   hardpan, 
  and 
  in 
  a 
  few 
  places 
  on 
  the 
  glaciated 
  rock 
  surface. 
  Accord- 
  

   ing 
  to 
  Mr 
  Kline, 
  of 
  Port 
  Ewen, 
  the 
  clay 
  around 
  the 
  village 
  is 
  

   nowhefe 
  over 
  18 
  feet 
  in 
  actual 
  thickness 
  and 
  is 
  underlain 
  by 
  hard- 
  

   pan. 
  A 
  point 
  worthy 
  of 
  notice 
  is 
  the 
  difference 
  in 
  level 
  of 
  50 
  feet 
  

   between 
  the 
  terrace 
  at 
  Port 
  Ewen 
  and 
  at 
  Glasco. 
  

  

  It 
  has 
  been 
  suggested 
  by 
  Dr 
  Frederick 
  J. 
  H. 
  Merrill 
  that 
  this 
  

   may 
  be 
  due 
  to 
  the 
  fact 
  that, 
  when 
  sediment 
  is 
  deposited 
  in 
  a 
  

   basin 
  its 
  edge 
  would 
  be 
  higher 
  than 
  the 
  center. 
  The 
  Quaternary 
  

   formation 
  broadens 
  on 
  toward 
  the 
  west, 
  and 
  Port 
  Ewen 
  would 
  be 
  a 
  

   point 
  on 
  the 
  basin's 
  edge, 
  while 
  Glasco 
  is 
  near 
  the 
  center. 
  

  

  In 
  this 
  connection 
  the 
  following 
  well 
  records 
  are 
  of 
  interest. 
  

   A 
  boring 
  made 
  on 
  the 
  property 
  of 
  Isaac 
  Tamney, 
  at 
  Eddyville, 
  

   showed 
  : 
  

  

  Sandy 
  loam 
  10 
  feet 
  

  

  Quicksand 
  70 
  " 
  

  

  Blue 
  clay 
  10 
  '^ 
  

  

  Gravel 
  

  

  Total 
  thickness 
  90 
  " 
  

  

  