﻿CLASSIFICATION, 
  ETC. 
  OF 
  HAMILTON 
  AND 
  CHEMUNG 
  SERIES 
  125 
  

  

  shales 
  that 
  are 
  coarser; 
  both 
  of 
  which 
  contain 
  quite 
  a 
  good 
  many 
  

   fossils 
  which 
  are 
  unquestionably 
  in 
  place. 
  Spirifer 
  mesastrialis 
  

   Hall 
  is 
  common 
  in 
  both 
  divisions 
  of 
  the 
  fossiliferous 
  shales 
  asso- 
  

   ciated 
  with 
  Chemung 
  Lamellibranche. 
  The 
  fauna 
  is: 
  

  

  1 
  Spirifer 
  mesastrialis 
  Hall 
  (c) 
  

  

  2 
  Ortlwnota 
  (?) 
  parvula 
  Hall 
  (r) 
  

  

  3 
  Ptychopteria 
  sp. 
  (a) 
  

  

  4 
  Leptodesma 
  sp. 
  (rr) 
  

  

  5 
  Lyriopecten 
  priamus 
  Hall 
  (r) 
  

   This 
  outcrop 
  shows 
  clearly 
  enough 
  the 
  survival 
  of 
  a 
  few 
  

  

  species 
  of 
  the 
  Chemung 
  fauna, 
  after 
  the 
  appearance 
  of 
  the 
  lower 
  

   red 
  shales, 
  on 
  the 
  return 
  of 
  the 
  conditions 
  under 
  which 
  the 
  

   Chemung 
  rocks 
  were 
  deposited. 
  

  

  Along 
  the 
  Delhi 
  highway 
  from 
  Spring 
  lake 
  to 
  the 
  southeast 
  

   the 
  rocks 
  are 
  generally 
  covered 
  for 
  some 
  155 
  feet 
  so 
  that 
  it 
  was 
  

   not 
  possible 
  to 
  decide 
  upon 
  the 
  line 
  between 
  the 
  Oneonta 
  and 
  

   Chemung 
  formations. 
  However, 
  one 
  mile 
  southeast 
  of 
  the 
  lake 
  

   on 
  the 
  road 
  just 
  above 
  the 
  school 
  house 
  of 
  district 
  no. 
  10 
  in 
  the 
  

   southwestern 
  part 
  of 
  Meredith 
  is 
  an 
  outcrop 
  of 
  15 
  to 
  20 
  feet 
  of 
  

   red 
  argillaceous 
  shale 
  which 
  is 
  evidently 
  in 
  the 
  upper 
  part 
  of 
  

   the 
  Oneonta 
  formation. 
  It 
  is 
  probable 
  that 
  this 
  ledge 
  is 
  near 
  

   the 
  top 
  of 
  the 
  formation 
  since 
  on 
  the 
  other 
  side 
  of 
  the 
  divide 
  

   the 
  massive 
  greenish 
  sandstone 
  to 
  the 
  southeast 
  of 
  West 
  Mere- 
  

   dith 
  is 
  only 
  about 
  30 
  feet 
  higher. 
  As 
  far 
  as 
  noticed, 
  from 
  the 
  

   school 
  house 
  to 
  Delhi 
  the 
  rocks 
  when 
  exposed 
  are 
  the 
  reds 
  and 
  

   grays 
  of 
  the 
  Oneonta 
  formation. 
  This 
  section 
  has 
  been 
  studied 
  

   by 
  Mr 
  William 
  L. 
  Fisher, 
  and 
  various 
  other 
  sections 
  in 
  the 
  

   vicinity 
  of 
  Delhi 
  and 
  the 
  reader 
  interested 
  in 
  the 
  geology 
  of 
  this 
  

   valley 
  is 
  referred 
  to 
  the 
  following 
  account 
  which 
  he 
  has 
  prepared 
  

   for 
  this 
  report. 
  

  

  The 
  township 
  of 
  Delhi, 
  in 
  which 
  is 
  located 
  the 
  county-seat 
  of 
  

   Delaware 
  county, 
  is 
  situated 
  very 
  nearly 
  in 
  the 
  center 
  of 
  the 
  

   county, 
  on 
  both 
  sides 
  of 
  the 
  west 
  branch 
  of 
  the 
  Delaware 
  river. 
  

   As 
  will 
  be 
  seen 
  by 
  referring 
  to 
  the 
  map 
  it 
  contains 
  within 
  its 
  bor- 
  

   ders 
  rocks 
  of 
  three 
  different 
  formations. 
  The 
  southern 
  portion 
  

   of 
  the 
  township 
  is 
  covered 
  by 
  the 
  Catskill, 
  the 
  northwestern 
  

   corner 
  is 
  crossed 
  by 
  a 
  narrow 
  belt 
  of 
  Chemung, 
  while 
  the 
  north- 
  

   ern 
  part 
  lies 
  within 
  the 
  area 
  of 
  the 
  Oneonta. 
  

  

  