﻿Report 
  of 
  the 
  State 
  Geologist. 
  519 
  

  

  there 
  is 
  shown 
  a 
  portion 
  of 
  the 
  exposures 
  along 
  the 
  Eondout 
  

   creek 
  at 
  "Wilbur. 
  

  

  These 
  flexures 
  pitch 
  gently 
  downward 
  to 
  the 
  north 
  and 
  pass 
  

   into 
  the 
  elevated 
  region 
  occupied 
  by 
  a 
  broad 
  belt 
  of 
  Esopus 
  shales, 
  

   overlaid 
  by 
  Onondaga 
  limestones 
  to 
  the 
  northwest. 
  To 
  the 
  south- 
  

   ward 
  the 
  flexures 
  are 
  in 
  the 
  Hudson 
  river 
  shales 
  under 
  the 
  low 
  

   region 
  south 
  of 
  Wilbur, 
  and 
  the 
  limestones 
  extend 
  southwestward 
  

   in 
  a 
  monoclinal 
  ridge 
  of 
  which 
  the 
  relations 
  are 
  shown 
  on 
  the 
  

   left 
  of 
  section 
  Y, 
  plate 
  4. 
  

  

  Opposite 
  Wilbur 
  there 
  is 
  the 
  basin-like 
  area 
  of 
  which 
  a 
  cross 
  

   section 
  is 
  given 
  on 
  the 
  right 
  of 
  section 
  Y. 
  I 
  did 
  not 
  make 
  an 
  

   extended 
  examination 
  of 
  this 
  feature, 
  for 
  it 
  appears 
  to 
  have 
  been 
  

   carefully 
  explored 
  by 
  Prof. 
  Davis. 
  It 
  is 
  an 
  extension 
  of 
  the 
  

   synclinal 
  which 
  crosses 
  Eondout 
  creek 
  just 
  north 
  of 
  the 
  railway, 
  

   and 
  it 
  terminates 
  in 
  about 
  a 
  mile 
  in 
  a 
  " 
  spooning 
  up 
  " 
  of 
  the 
  dips. 
  

   The 
  area 
  includes 
  the 
  cement 
  series, 
  Helderberg 
  limestones, 
  

   Oriskany 
  sandstone, 
  and 
  a 
  small 
  mass 
  of 
  Esopus 
  shales. 
  The 
  

   West 
  Shore 
  railway 
  crosses 
  its 
  center 
  and 
  affords 
  excellent 
  

   exposures 
  of 
  most 
  of 
  the 
  beds. 
  There 
  are 
  also 
  a 
  number 
  of 
  

   quarries 
  exposing 
  the 
  Becraf 
  t 
  limestone 
  and 
  cement 
  series. 
  The 
  

   cement 
  bed 
  is 
  much 
  thinner 
  in 
  this 
  region 
  than 
  it 
  is 
  to 
  the 
  north- 
  

   ward, 
  and 
  undoubtedly 
  merges 
  into 
  the 
  thin-bedded 
  waterlimes 
  

   as 
  suggested 
  by 
  Davis. 
  The 
  Magara 
  was 
  not 
  observed 
  south 
  of 
  

   the 
  Eondout 
  quarries. 
  West 
  from 
  Wilbur 
  along 
  road 
  and 
  rail- 
  

   road 
  there 
  is 
  a 
  section 
  across 
  the 
  monoclinal 
  belt, 
  from 
  lower 
  

   Shaly 
  limestone 
  to 
  Onondaga 
  limestone. 
  The 
  dips 
  are 
  steep 
  

   although 
  somewhat 
  variable, 
  but 
  in 
  the 
  upper 
  beds 
  of 
  the 
  Esopus 
  

   shales 
  they 
  flatten 
  to 
  ten 
  degrees 
  and 
  the 
  overlying 
  Onondaga 
  

   limestones 
  lie 
  in 
  a 
  very 
  shallow 
  synclinal. 
  The 
  Esopus 
  and 
  

   Onondaga 
  beds 
  are 
  very 
  finely 
  exposed 
  in 
  the 
  railroad 
  cuts 
  and 
  

   the 
  intergrading 
  of 
  materials 
  is 
  clearly 
  exhibited. 
  The 
  black, 
  

   slaty 
  Esopus 
  shales 
  gradually 
  merge 
  into 
  impure 
  limestones 
  of 
  

   dirty 
  buff 
  color, 
  and 
  these 
  grade 
  rapidly 
  into 
  the 
  light 
  blue-gray, 
  

   cherty 
  Onondaga 
  limestones. 
  The 
  slaty 
  cleavage 
  extends 
  for 
  some 
  

   distance 
  into 
  the 
  transition 
  beds, 
  but 
  gradually 
  gives 
  place 
  to 
  the 
  

   massive 
  bedding 
  of 
  the 
  pure 
  limestones. 
  In 
  the 
  hollow 
  just 
  

   west 
  of 
  these 
  cuts 
  the 
  Esopus 
  shales 
  extend 
  some 
  distance 
  north 
  

   where 
  they 
  pass 
  under 
  an 
  arch 
  of 
  the 
  limestone. 
  From 
  this 
  region 
  

   to 
  the 
  west, 
  north 
  and 
  the 
  northeast 
  there 
  is 
  an 
  extended 
  series 
  of 
  

  

  