﻿CLASSIFICATION, 
  ETC. 
  OF 
  HAMILTON 
  AND 
  CHEMUNG 
  SERIES 
  135 
  

  

  represented 
  as 
  in 
  the 
  Oneonta 
  sandstone, 
  while 
  the 
  higher 
  part 
  

   of 
  the 
  hills 
  is 
  colored 
  as 
  in 
  the 
  Chemung 
  formation. 
  There 
  are 
  

   fair 
  outcrops 
  along 
  the 
  highways 
  crossing 
  these 
  hills, 
  both 
  to 
  the 
  

   east 
  and 
  to 
  the 
  west 
  of 
  the 
  river, 
  which 
  afford 
  a 
  ready 
  means 
  for 
  

   comparison 
  between 
  them 
  and 
  the 
  Chemung 
  rocks 
  in 
  the 
  western 
  

   part 
  of 
  Delaware 
  county 
  and 
  along 
  the 
  Susquehanna 
  valley. 
  

  

  LXIV 
  D. 
  One 
  of 
  the 
  best 
  section 
  noted 
  for 
  such 
  comparison 
  is 
  

   the 
  one 
  along 
  the 
  Eoxbury 
  and 
  Hobart 
  highway 
  across 
  the 
  high 
  

   hill 
  to 
  the 
  northwest 
  of 
  Roxbury. 
  This 
  section 
  is 
  shown 
  diagram- 
  

   matically 
  in 
  another 
  part 
  of 
  this 
  report; 
  but 
  it 
  is 
  of 
  sufficient 
  im- 
  

   portance 
  to 
  merit 
  a 
  more 
  detailed 
  description. 
  From 
  the 
  bridge 
  

   level 
  over 
  the 
  east 
  branch 
  of 
  the 
  Delaware 
  at 
  Hubbell 
  corners 
  

   for 
  some 
  73 
  feet 
  the 
  rocks 
  are 
  .covered; 
  but 
  where 
  the 
  road 
  forks 
  

   for 
  Hobart 
  and 
  Bloomville, 
  and 
  lower 
  toward 
  the 
  brook 
  there 
  is 
  

   an 
  outcrop 
  (D 
  2 
  ) 
  of 
  27 
  feet 
  of 
  red 
  argillaceous 
  shale. 
  On 
  the 
  

   Geologic 
  map 
  of 
  Neio 
  York 
  the 
  line 
  of 
  separation 
  between 
  the 
  

   Oneonta 
  sandstone 
  and 
  Chemung 
  formation 
  is 
  represented 
  as 
  

   crossing 
  the 
  road 
  at 
  this 
  fork. 
  From 
  this 
  fork 
  to 
  the 
  summit 
  of 
  

   the 
  hill 
  on 
  the 
  road 
  is 
  barometrically 
  880 
  feet, 
  and 
  along 
  the 
  

   highway 
  there 
  are 
  numerous 
  outcrops 
  of 
  red 
  sandstone 
  and 
  shale 
  

   alternating 
  with 
  gray 
  sandstone; 
  also 
  layers 
  of 
  breccia 
  both 
  red 
  

   and 
  greenish 
  gray 
  in 
  color 
  containing 
  fragments 
  of 
  fish 
  bones. 
  

   On 
  the 
  hill 
  south 
  of 
  the 
  highway 
  and 
  70 
  feet 
  above 
  the 
  road 
  

   summit 
  are 
  ledges 
  of 
  gray 
  and 
  red 
  thin 
  bedded 
  sandstones 
  some 
  

   of 
  which 
  have 
  very 
  much 
  crossbedded 
  structure. 
  On 
  the 
  Geologic 
  

   map 
  of 
  Netv 
  York 
  the 
  rocks 
  from 
  the 
  Bloomville-Hobart 
  fork 
  

   up 
  to 
  the 
  summit 
  and 
  down 
  the 
  western 
  divide 
  are 
  colored 
  as 
  

   in 
  the 
  Chemung, 
  while 
  the 
  base 
  of 
  the 
  Catskill 
  is 
  represented 
  

   near 
  the 
  top 
  of 
  the 
  high 
  hill 
  south 
  of 
  the 
  road 
  summit. 
  This 
  

   would 
  give 
  at 
  least 
  a 
  thickness 
  of 
  900 
  feet 
  for 
  the 
  Chemung 
  on 
  

   this 
  hill. 
  In 
  this 
  section 
  it 
  is 
  difficult 
  to 
  recognize 
  any 
  of 
  the 
  

   characters 
  of 
  the 
  Chemung 
  of 
  the 
  western 
  part 
  of 
  Delaware 
  

   county 
  and 
  apparently, 
  about 
  the 
  same 
  lithologic 
  characters 
  ex- 
  

   tend 
  from 
  the 
  Oneonta 
  sandstone 
  along 
  the 
  river 
  valley 
  to 
  the 
  

   top 
  of 
  the 
  high 
  hill, 
  and 
  it 
  seems 
  to 
  the 
  writer 
  that 
  the 
  conditions 
  

   under 
  which 
  the 
  Catskill 
  was 
  deposited 
  have 
  about 
  replaced 
  

   those 
  of 
  the 
  Chemung. 
  

  

  