﻿CLAYS 
  OF 
  NEW 
  YORK 
  

  

  605 
  

  

  About 
  one 
  quarter 
  mile 
  soutli 
  of 
  Myers's 
  brick 
  yard 
  is 
  that 
  of 
  

   Stewart. 
  The 
  section 
  at 
  this 
  locality 
  (now 
  obliterated) 
  as 
  given 
  

   by 
  Dr 
  Merrill: 
  

  

  Surface 
  stratum 
  yellow 
  micaceous 
  clay 
  35 
  feet 
  

  

  Reddish 
  and 
  sandy 
  clay 
  5 
  

  

  Blue 
  black 
  sandy 
  clay 
  with 
  nodules 
  of 
  white 
  pyrites. 
  ... 
  25 
  " 
  

   White 
  sand 
  

  

  Total 
  thickness 
  65 
  " 
  

  

  A 
  local 
  deposit 
  of 
  grayish 
  blue 
  sandy 
  clay 
  occurs 
  at 
  East 
  Willis- 
  

   ton. 
  It 
  varies 
  in 
  depth 
  from 
  6 
  to 
  20 
  feet 
  and 
  is 
  underlain 
  by 
  

   sand. 
  On 
  my 
  last 
  ^dsit 
  to 
  this 
  locality 
  I 
  found 
  a 
  number 
  of 
  stems 
  

   and 
  leaf 
  fragments 
  in 
  the 
  clay 
  but 
  none 
  sufficiently 
  well 
  preserved 
  

   for 
  identification. 
  

  

  There 
  is 
  still 
  some 
  doubt 
  as 
  to 
  the 
  exact 
  conditions 
  under 
  which 
  

   the 
  beds 
  of 
  clay 
  and 
  gravel 
  which 
  form 
  the 
  greater 
  portion 
  of 
  

   Long 
  Island 
  were 
  deposited, 
  but 
  it 
  is 
  probable 
  that 
  the 
  clays 
  repre- 
  

   sent 
  shallow 
  water 
  marine 
  deposits 
  of 
  Cretaceous 
  and 
  Tertiary 
  age. 
  

   The 
  overlying 
  sands 
  and 
  gravels 
  have 
  in 
  most 
  instances 
  a 
  cross- 
  

   bedded 
  structure, 
  with 
  a 
  south 
  dip, 
  and 
  were 
  probably 
  deposited 
  

   by 
  swift 
  currents 
  as 
  stated 
  by 
  Dr 
  Merrill. 
  

  

  The 
  age 
  of 
  the 
  clays 
  is 
  still 
  largely 
  a 
  matter 
  of 
  speculation, 
  and 
  

   will 
  probably 
  remain 
  so 
  in 
  many 
  cases 
  unless 
  paleontologic 
  evidence 
  

   is 
  forthcoming. 
  Those 
  on 
  Gardiner's 
  island 
  are 
  quite 
  recent, 
  as 
  

   shown 
  by 
  the 
  contained 
  fossils, 
  and 
  the 
  clay 
  on 
  Littleneck 
  near 
  

   Northport 
  is 
  Cretaceous 
  as 
  previously 
  noted. 
  The 
  proof 
  of 
  the 
  

   age 
  of 
  the 
  Glencove 
  clay 
  is 
  not 
  absolute. 
  

  

  Cretaceous 
  leaves 
  in 
  fragments 
  of 
  ferruginous 
  sandstone 
  have 
  

   been 
  found 
  along 
  the 
  north 
  shore 
  of 
  Long 
  Island 
  from 
  Greatneck 
  

  

  1 
  F. 
  J. 
  H. 
  Merrill. 
  " 
  Geology 
  of 
  Long 
  Island," 
  Ann. 
  N. 
  Y. 
  acad. 
  set. 
  Nov. 
  

   1884. 
  

  

  