﻿CLASSIFICATION, 
  ETC. 
  OF 
  HAMILTON 
  AND 
  CHEMUNG 
  SERIES 
  123 
  

  

  account 
  of 
  the 
  comparatively 
  small 
  number 
  of 
  sections 
  of 
  suffi- 
  

   cient 
  importance 
  to 
  merit 
  a 
  description, 
  as 
  well 
  as 
  the 
  monotonous 
  

   repetition 
  of 
  red 
  sandstones 
  and 
  shales 
  alternating 
  with 
  coarse, 
  

   greenish 
  gray 
  sandstones, 
  it 
  is 
  considered 
  best 
  to 
  describe 
  this 
  

   region 
  under 
  the 
  general 
  heading 
  of 
  the 
  Delaware 
  valley. 
  

  

  LXV 
  D 
  4 
  . 
  In 
  the 
  southwestern 
  part 
  of 
  Meredith 
  township 
  about 
  

   five 
  miles 
  northwest 
  of 
  Delhi 
  and 
  barometrically 
  720 
  feet 
  above 
  the 
  

   level 
  of 
  the 
  Delhi 
  postoffice 
  is 
  a 
  small, 
  glacial 
  lake 
  known 
  as 
  

   Spring 
  lake 
  or 
  Robinson's 
  pond. 
  This 
  lake 
  which 
  is 
  the 
  source 
  

   of 
  one 
  branch 
  of 
  Steel's 
  brook, 
  a 
  stream 
  lined 
  along 
  the 
  lower 
  

   part 
  of 
  its 
  course 
  by 
  steep 
  hills, 
  is 
  well 
  toward 
  the 
  top 
  of 
  the 
  

   highest 
  hills 
  and 
  flows 
  southeasterly 
  and 
  enters 
  the 
  Delaware 
  

   river 
  at 
  Delhi. 
  Just 
  above 
  the 
  lake 
  are 
  thin 
  bedded 
  greenish 
  

   sandstones 
  which 
  have 
  the 
  finer 
  lithologic 
  structure 
  of 
  the 
  

   Chemung 
  rather 
  than 
  that 
  of 
  the 
  coarse 
  grained 
  sandstones 
  of 
  

   the 
  Catskill 
  formation 
  to 
  the 
  east 
  of 
  the 
  Delaware 
  river. 
  Alter- 
  

   nating 
  with 
  these 
  sandstones 
  there 
  are 
  thin, 
  greenish, 
  arenaceous 
  

   shales 
  similar 
  to 
  those 
  of 
  the 
  Chemung 
  formation. 
  There 
  is 
  

   also, 
  below 
  the 
  highway, 
  a 
  ledge 
  of 
  thin 
  bedded, 
  faintly 
  reddish 
  

   sandstone 
  which 
  is 
  apparently 
  replacing 
  the 
  greenish 
  gray, 
  

   colored 
  sandstones 
  of 
  the 
  Chemung. 
  This 
  stratum 
  if 
  followed 
  

   to 
  the 
  west 
  probably 
  changes 
  to 
  a 
  typical 
  Chemung 
  sandstone, 
  

   while 
  to 
  the 
  southeast 
  of 
  the 
  Delaware 
  river 
  it 
  becomes 
  a 
  red 
  

   sandstone 
  with 
  the 
  lithologic 
  appearance 
  of 
  those 
  of 
  the 
  

   typical 
  Catskill. 
  This 
  gradual 
  merging 
  of 
  the 
  structural 
  char- 
  

   acters 
  of 
  the 
  Chemung 
  with 
  those 
  of 
  the 
  Catskill 
  was 
  clearly 
  

   stated 
  by 
  Darton 
  and 
  shown 
  in 
  the 
  figures 
  illustrating 
  his 
  paper. 
  

   He 
  also 
  says 
  that 
  the 
  Chemung 
  formation 
  is 
  " 
  overlain 
  by 
  several 
  

   thousand 
  feet 
  of 
  hard, 
  coarse, 
  crossbedded 
  gray 
  sandstones 
  with 
  

   intercalated 
  red 
  shales 
  and 
  gray 
  flags 
  into 
  which 
  they 
  merge 
  

   eastward 
  and 
  at 
  the 
  expense 
  of 
  which 
  they 
  expand 
  westward. 
  

   This 
  merging 
  was 
  studied 
  with 
  great 
  care 
  and 
  it 
  was 
  found 
  that 
  

   stratigraphic 
  continuity 
  throughout 
  is 
  beyond 
  question 
  There 
  

   is 
  no 
  overlap 
  or 
  wedging 
  out 
  of 
  the 
  beds 
  either 
  as 
  a 
  whole 
  or 
  

   singly 
  but 
  a 
  gradual 
  transition 
  of 
  coarse 
  materials 
  into 
  fine 
  

   materials. 
  Lower 
  and 
  lower 
  shaly 
  beds 
  are 
  successively 
  involved 
  

   eastward 
  till 
  at 
  a 
  point 
  about 
  due 
  south 
  of 
  Oneonta 
  the 
  lowest 
  

  

  