﻿560 
  ^FORTY-SEVENTH 
  REPORT 
  ON 
  THE 
  STATE 
  MUSEUM. 
  

  

  are 
  apparently 
  several 
  distinct 
  series 
  of 
  beds 
  of 
  these 
  coarse 
  

   sandstones, 
  separated 
  by 
  slates 
  and 
  sandy 
  shales 
  of 
  moderate 
  

   thickness. 
  The 
  section 
  east 
  of 
  Highland 
  station 
  is 
  given 
  in 
  the 
  

   following 
  figure 
  : 
  

  

  Fig. 
  16. 
  — 
  Section 
  through 
  the 
  northern 
  end 
  of 
  Marlborough 
  mountain 
  from 
  Clintondale 
  

   station 
  to 
  Highland 
  station. 
  Looking 
  north. 
  

  

  The 
  intermediate 
  slate 
  in 
  the 
  valley 
  of 
  Black 
  creek 
  was 
  found 
  

   to 
  be 
  abundantly 
  fossiliferous 
  with 
  a 
  Hudson 
  river 
  fauna. 
  No 
  

   fossils 
  were 
  found 
  in 
  the 
  sandstones. 
  A 
  characteristic 
  feature 
  of 
  

   these 
  sandstones 
  is 
  -the 
  occurrence 
  of 
  dissemiuated 
  pebbles 
  and 
  

   conglomeratic 
  streaks 
  of 
  lighter-colored 
  sandstones, 
  of 
  blue-gray 
  

   limestones 
  of 
  calciferous 
  aspect 
  and 
  angular 
  fragments 
  of 
  hard, 
  

   dark 
  slates. 
  No 
  fossils 
  were 
  found 
  in 
  this 
  conglomeratic 
  material 
  

   but 
  no 
  extended 
  search 
  was 
  made 
  for 
  them. 
  The 
  conglomeratic 
  

   streaks 
  occur 
  at 
  several 
  horizons 
  apparently, 
  but 
  they 
  are 
  at 
  a 
  

   considerable 
  distance 
  from 
  the 
  adjoining 
  slates. 
  These 
  coarse- 
  

   grained 
  members 
  give 
  place 
  in 
  part 
  to- 
  finer-grained 
  quartzitic 
  

   beds 
  at 
  some 
  localities 
  ebpecially 
  in 
  the 
  ridges 
  north 
  of 
  West 
  

   Park 
  station. 
  They 
  are 
  best 
  exposed 
  in 
  the 
  deep 
  cut 
  of 
  the 
  West 
  

   Shore 
  railroad 
  between 
  West 
  Park 
  and 
  Esopus, 
  where 
  there 
  are 
  

   seeu 
  massively 
  -bedded, 
  red 
  quartzites 
  standing 
  nearly 
  vertical 
  or 
  

   dipping 
  steeply 
  to 
  the 
  southwest. 
  Near 
  Black 
  creek, 
  a 
  few 
  yards 
  

   from 
  the 
  railroad, 
  these 
  beds 
  were 
  quarried 
  for 
  abutments 
  for 
  

   the 
  railroad 
  bridge, 
  and 
  although 
  very 
  hard 
  and 
  difficult 
  to 
  work 
  

   they 
  afford 
  an 
  excellent 
  material 
  for 
  such 
  purposes. 
  The 
  high 
  

   ridges 
  of 
  hard 
  beds 
  extend 
  west 
  from 
  Esopus 
  nearly 
  to 
  the 
  Rondout 
  

   creek, 
  but 
  are 
  crossed 
  by 
  a 
  relatively 
  low 
  depression 
  at 
  Ulster 
  

   park. 
  . 
  To 
  the 
  eastward 
  of 
  Marlborough 
  mountain 
  and 
  its 
  

   northern 
  extensions 
  there 
  is 
  a 
  belt 
  of 
  slates 
  similar 
  to 
  those 
  of 
  the 
  

   Wallkill 
  and 
  Swartkill 
  valleys, 
  but 
  containing 
  many 
  intercalated 
  

   fine-grained 
  sandstones 
  which 
  extend 
  to 
  the 
  Hudson 
  river. 
  

   The 
  beds 
  are 
  finely 
  exposed 
  in 
  the 
  river 
  banks, 
  partly 
  in 
  the 
  

   many 
  cuts 
  of 
  the 
  West 
  Shore 
  railway. 
  The 
  slates 
  in 
  these 
  cuts 
  

   are 
  mainly 
  gray, 
  highly 
  cleaved 
  and 
  steeply 
  dipping. 
  To 
  the 
  

  

  