﻿538 
  Forty-seventh 
  Report 
  on 
  the 
  4 
  State 
  Museum. 
  

  

  arch 
  shown 
  in 
  figure 
  10. 
  The 
  eastern 
  side 
  of 
  this 
  ridge 
  is 
  a 
  

   synclinal 
  which 
  widens 
  considerably 
  in 
  the 
  vicinity 
  of 
  Bruce 
  ville 
  

   and 
  continues 
  up 
  the 
  Coxingkill 
  valley 
  far 
  southward 
  into 
  the 
  

   Sha 
  wan 
  gunk 
  mountain. 
  It 
  holds 
  the 
  Clinton-Medina 
  members, 
  

   the 
  cement 
  beds 
  and 
  the 
  Tentaculite 
  and 
  Pentamerus 
  limestones 
  

   for 
  several 
  miles, 
  when 
  the 
  upward 
  pitch 
  finally 
  brings 
  the 
  

   Shawangunk 
  grit 
  to 
  the 
  surface. 
  The 
  distribution 
  of 
  the 
  forma- 
  

   tions 
  in 
  this 
  flexure 
  are 
  shown 
  on 
  the 
  geologic 
  map 
  and 
  the 
  

   structure 
  is 
  represented 
  in 
  the 
  lower 
  section 
  of 
  plate 
  7, 
  and 
  the 
  two 
  

   northern 
  sections 
  on 
  plate 
  12. 
  Two 
  miles 
  southeast 
  of 
  High 
  Falls, 
  

   the 
  synclinal 
  divides 
  into 
  two 
  synclinals, 
  with 
  an 
  intervening 
  

   anticlinal 
  ridge. 
  The 
  Coxingkill 
  comes 
  down 
  the 
  valley 
  west 
  of 
  

   the 
  ridge, 
  and 
  the 
  cutlet 
  of 
  Lake 
  Mohonk 
  is 
  into 
  a 
  valley 
  on 
  the 
  

   east 
  side. 
  Up 
  the 
  latter 
  the 
  Clinton 
  and 
  cement 
  beds 
  extend 
  in 
  

   a 
  narrow 
  belt, 
  carrying 
  in 
  its 
  center 
  an 
  outlier 
  of 
  Tentaculite 
  and 
  

   Pentamerus 
  limestones 
  which 
  give 
  rise 
  to 
  a 
  small 
  ridge. 
  The 
  

   cement 
  series 
  is 
  covered 
  by 
  drift 
  and 
  debris 
  in 
  the 
  greater 
  part 
  of 
  

   the 
  Coxingkill 
  district 
  and 
  there 
  is 
  some 
  doubt 
  as 
  to 
  the 
  bound- 
  

   aries, 
  but 
  it 
  outcrops 
  at 
  the 
  road 
  forks 
  south 
  of 
  Bruce 
  ville 
  and 
  it 
  

   is 
  mined 
  near 
  High 
  Falls. 
  These 
  mines 
  are 
  in 
  the 
  western 
  arm 
  of 
  

   the 
  synclinal 
  and 
  the 
  galleries 
  extend 
  for 
  a 
  considerable 
  distance 
  

   down 
  the 
  slope 
  eastward. 
  The 
  cement 
  is 
  carried 
  across 
  the 
  low 
  

   ridge 
  on 
  which 
  High 
  Falls 
  is 
  built, 
  by 
  a 
  wire 
  rope 
  tramway 
  which 
  

   extends 
  to 
  the 
  canal. 
  This 
  ridge 
  is 
  due 
  to 
  Shawangunk 
  grit, 
  

   which 
  rises 
  a 
  mile 
  north 
  of 
  High 
  Falls 
  along 
  a 
  broad 
  anticlinal 
  

   in 
  which 
  are 
  combined 
  the 
  flexures 
  shown 
  to 
  the 
  left 
  on 
  the 
  

   fourth 
  section 
  in 
  plate 
  7. 
  The 
  cement 
  beds 
  extend 
  around 
  the 
  

   northern 
  point 
  of 
  the 
  ridge, 
  cross 
  the 
  creek 
  and 
  canal 
  a 
  short 
  

   distance 
  above 
  High 
  Falls 
  and 
  continue 
  northward 
  along 
  the 
  

   west 
  bank 
  to 
  the 
  falls. 
  They 
  are 
  not 
  well 
  exposed 
  north 
  of 
  the 
  

   village, 
  but 
  they 
  cross 
  the 
  creek 
  again 
  to 
  the 
  west 
  and 
  give 
  rise 
  

   to 
  the 
  falls. 
  These 
  falls 
  are 
  shown 
  in 
  plate 
  10, 
  and 
  in 
  plate 
  11 
  

   there 
  is 
  represented 
  a 
  portion 
  of 
  the 
  north 
  side 
  of 
  the 
  gorge 
  

   below, 
  in 
  which 
  the 
  members 
  underlying 
  the 
  cement 
  are 
  finely 
  

   exposed. 
  

  

  The 
  principal 
  cement 
  bed 
  in 
  this 
  vicinity 
  has 
  a 
  thickness 
  aver- 
  

   aging 
  fourteen 
  feet. 
  There 
  is 
  a 
  thinner 
  slaty 
  cement 
  bed 
  below 
  

   with 
  a 
  thin 
  intervening 
  series 
  of 
  water 
  limes. 
  The 
  cement 
  is 
  

  

  