﻿CLASSIFICATION, 
  ETC. 
  OF 
  HAMILTON 
  AND 
  CHEMUNG 
  SERIES 
  175 
  

  

  Oneonta 
  has 
  replaced 
  the 
  Ithaca 
  in 
  the 
  same 
  manner 
  as 
  the 
  Cat- 
  

   kill 
  replaces 
  the 
  Chemung 
  in 
  Delaware 
  co., 
  and 
  the 
  author 
  

   considers 
  it 
  advisable 
  to 
  follow 
  the 
  precedent 
  of 
  the 
  state 
  sur- 
  

   vey 
  and 
  so 
  apply 
  the 
  term 
  Oneonta 
  formation 
  to 
  these 
  rocks 
  al- 
  

   though 
  it 
  is 
  quite 
  true 
  that 
  they 
  are 
  synchronous 
  with 
  rocks 
  

   which 
  in 
  the 
  Susquehanna 
  valley 
  are 
  referred 
  to 
  the 
  Oneonta, 
  

   Ithaca 
  and 
  upper 
  Sherburne 
  formations. 
  The 
  above 
  statement 
  

   explains 
  why 
  the 
  Oneonta 
  formation 
  is 
  represented 
  on 
  the 
  

   Geologic 
  map 
  of 
  New 
  York 
  so 
  much 
  farther 
  north 
  on 
  the 
  eastern 
  

   than 
  on 
  the 
  western 
  side 
  of 
  the 
  Schoharie 
  river; 
  and 
  correctly 
  so, 
  

   provided 
  the 
  lower 
  mass 
  of 
  coarse 
  greenish 
  gray 
  and 
  red 
  sand- 
  

   stones 
  with 
  red 
  shale, 
  which 
  can 
  not 
  be 
  separated 
  from 
  the 
  

   Oneonta 
  formation 
  in 
  its 
  typical 
  region, 
  be 
  referred 
  to 
  that 
  forma- 
  

   tion. 
  On 
  the 
  eastern 
  side 
  of 
  the 
  Schoharie 
  river 
  the 
  author 
  has 
  

   referred 
  the 
  rocks 
  to 
  the 
  Oneonta 
  formation 
  beginning 
  with 
  the 
  

   lowest 
  red 
  sandstones 
  or 
  shales 
  of 
  any 
  considerable 
  thickness. 
  

   The 
  sandstones 
  below 
  are 
  frequently 
  coarse 
  and 
  similar 
  to 
  those 
  

   in 
  the 
  Oneonta, 
  but 
  the 
  stratigraphic 
  position 
  and 
  the 
  occurrence 
  

   of 
  a 
  few 
  fossils 
  in 
  the 
  alternating 
  shales 
  have 
  decided 
  the 
  author 
  

   to 
  correlate 
  them 
  in 
  general 
  with 
  the 
  Sherburne 
  formation. 
  On 
  

   the 
  Geologic 
  map 
  of 
  New 
  York 
  the 
  top 
  of 
  Moheganter 
  hill 
  and 
  the 
  

   high 
  land 
  between 
  Breakabeen 
  and 
  Franklinton 
  are 
  represented 
  

   as 
  in 
  the 
  Hamilton 
  formation 
  (the 
  upper 
  part 
  of 
  which 
  included 
  the 
  

   Ithaca 
  and 
  Sherburne 
  formations) 
  but 
  it 
  should 
  be 
  represented 
  

   in 
  the 
  Oneonta 
  for 
  the 
  rocks 
  of 
  corresponding 
  stratigraphic 
  posi- 
  

   tion 
  on 
  the 
  high 
  ground 
  to 
  the 
  northeast 
  of 
  Franklinton 
  and 
  to 
  

   the 
  south 
  and 
  east 
  of 
  Huntersland 
  are 
  so 
  represented. 
  On 
  the 
  

   accompanying 
  geologic 
  map 
  it 
  will 
  be 
  noticed 
  that 
  the 
  

   base 
  of 
  the 
  Oneonta 
  formation 
  to 
  the 
  east 
  of 
  the 
  Scho- 
  

   harie 
  river 
  is 
  represented 
  nearer 
  the 
  western 
  brow 
  of 
  the 
  

   steep 
  hills 
  than 
  on 
  the 
  Geologic 
  map 
  of 
  New 
  York 
  and 
  that 
  it 
  runs 
  

   north 
  into 
  the 
  northwestern 
  corner 
  of 
  Broome 
  township 
  and 
  then 
  

   southeasterly 
  along 
  the 
  side 
  of 
  the 
  steep 
  hill 
  to 
  the 
  southwest 
  of 
  

   the 
  upper 
  part 
  of 
  the 
  Catskill 
  creek, 
  till 
  it 
  crosses 
  that 
  creek 
  be- 
  

   low 
  Livingstonville 
  near 
  the 
  county 
  line. 
  To 
  the 
  northeast 
  of 
  

   the 
  Catskill 
  creek 
  across 
  the 
  northeastern 
  part 
  of 
  Broome 
  town- 
  

  

  