﻿Report 
  of 
  the 
  State 
  Geologist. 
  539 
  

  

  worked 
  in 
  several 
  quarries 
  along 
  the 
  east 
  bank 
  of 
  the 
  creek 
  

   above 
  the 
  falls. 
  In 
  the 
  gorge 
  below 
  the 
  falls 
  there 
  are 
  forty 
  

   feet 
  of 
  supposed 
  Clin' 
  on 
  to 
  Medina 
  members 
  underlaid 
  by 
  the 
  

   Shawangunk 
  grit. 
  The 
  beds 
  dip 
  gently 
  to 
  the 
  westward 
  except 
  

   at 
  a 
  small 
  local 
  anticlinal 
  which 
  crosses 
  the 
  creek 
  near 
  the 
  falls, 
  

   as 
  shown 
  in 
  plate 
  11. 
  The 
  rocks 
  in 
  this 
  exposure 
  are 
  principally 
  

   gray 
  sandstones 
  above 
  and 
  red 
  shales 
  below, 
  with 
  a 
  calcareous 
  

   sandstone 
  bed 
  intervening. 
  The 
  upper 
  sandstones 
  are 
  thin- 
  

   bedded 
  and 
  only 
  moderately 
  hard 
  in 
  texture. 
  They 
  contain 
  sev- 
  

   eral 
  thin 
  beds 
  of 
  shales 
  of 
  gray 
  color 
  and 
  some 
  of 
  a 
  dull 
  red 
  tint. 
  

   The 
  intermediate 
  calcareous 
  bed 
  is 
  about 
  seven 
  feet 
  thick 
  and 
  

   gives 
  rise 
  to 
  a 
  small 
  fall 
  in 
  the 
  creek, 
  which 
  is 
  shown 
  in 
  plate 
  11. 
  

   It 
  is 
  a 
  fine 
  grained, 
  pyritiferous, 
  cement-like 
  rock, 
  but 
  rather 
  

   more 
  sandy 
  than 
  argillaceous. 
  It 
  is 
  underlaid 
  by 
  a 
  few 
  feet 
  of 
  

   gray 
  calcareous 
  shales, 
  which 
  merge 
  into 
  the 
  mass 
  of 
  bright 
  red 
  

   shales 
  lying 
  on 
  the 
  Shawangunk 
  grit 
  at 
  the 
  mouth 
  of 
  the 
  gorge. 
  

   These 
  red 
  shales 
  contain 
  intercalated 
  beds 
  of 
  buff 
  and 
  green 
  

   shales 
  and 
  have 
  a 
  thickness 
  of 
  about 
  eighteen 
  feet. 
  They 
  lie 
  just 
  

   east 
  of 
  the 
  locality 
  indicated 
  on 
  the 
  right-hand 
  corner 
  of 
  plate 
  11. 
  

   Mather* 
  described 
  this 
  section 
  in 
  some 
  detail 
  in 
  his 
  report 
  on 
  the 
  

   first 
  district, 
  but 
  he 
  mistook 
  the 
  thin-bedded 
  sandstones 
  for 
  lime- 
  

   stones 
  and 
  I 
  could 
  not 
  reconcile 
  his 
  statements 
  with 
  my 
  observa- 
  

   tions. 
  Cook, 
  in 
  the 
  G-eology 
  of 
  Xew 
  Jersey, 
  f 
  gives 
  some 
  nates 
  

   on 
  this 
  section 
  which 
  embody 
  the 
  principal 
  facts. 
  

  

  The 
  upper 
  members 
  in 
  the 
  High 
  Falls 
  gorge 
  is 
  quite 
  unlike 
  the 
  

   quartzite 
  which 
  characterizes 
  the 
  horizon 
  further 
  northward 
  and 
  

   they 
  represent 
  considerably 
  different 
  conditions 
  of 
  deposition. 
  

   Owing 
  to 
  lack 
  of 
  outcrops 
  in 
  the 
  interval 
  the 
  gradation 
  could 
  not 
  

   be 
  studied. 
  

  

  The 
  Esopus 
  slates 
  occupy 
  a 
  wide 
  area 
  west 
  of 
  Eosendale 
  con- 
  

   stituting 
  a 
  region 
  of 
  small 
  but 
  very 
  rough 
  ridges, 
  in 
  large 
  part 
  of 
  

   bare 
  rock. 
  They 
  are 
  black, 
  fine-grained 
  rocks 
  with 
  pronounced 
  

   slaty 
  cleavage. 
  On 
  the 
  road 
  from 
  Cottekill 
  to 
  Marbletown 
  they 
  

   are 
  frequently 
  seen 
  and 
  they 
  constitute 
  the 
  ridge 
  on 
  which 
  

   Stone 
  Kidge 
  village 
  is 
  situated. 
  The 
  structure 
  is 
  mainly 
  a 
  gentle 
  

   monoclinal 
  with 
  low 
  undulations, 
  as 
  shown 
  on 
  the 
  left 
  of 
  the 
  

  

  *Loc. 
  cit., 
  pp. 
  353-354. 
  tLoc. 
  cit., 
  p. 
  157. 
  

  

  