﻿510 
  Forty- 
  seventh 
  Report 
  on 
  tee 
  State 
  Museum. 
  

  

  banks 
  of 
  the 
  slaty 
  members 
  on 
  the 
  left. 
  The 
  coincidence 
  in 
  the 
  

   course 
  of 
  the 
  creek 
  with 
  the 
  strike 
  of 
  the 
  rocks 
  is 
  a 
  noteworthy- 
  

   feature, 
  which 
  is 
  continued 
  for 
  over 
  three 
  miles. 
  Near 
  the 
  road 
  

   forks, 
  a 
  mile 
  west 
  of 
  Glasco 
  landing, 
  the 
  Helderberg 
  beds 
  are 
  

   traversed 
  by 
  an 
  anticlinal 
  and 
  synclinal 
  entering 
  the 
  belt 
  from 
  

   the 
  north 
  -northeast. 
  These 
  give 
  rise 
  to 
  small 
  offsets 
  in 
  the 
  line 
  of 
  

   cliffs, 
  and 
  the 
  belts 
  of 
  outcrops 
  at 
  the 
  gap 
  through 
  which 
  the 
  road 
  

   passes 
  to 
  Mt. 
  Marion 
  station. 
  These 
  flexures 
  widen 
  and 
  deepen 
  

   southward, 
  giving 
  rise 
  to 
  considerable 
  complexity 
  in 
  the 
  distribu- 
  

   tion 
  of 
  the 
  formations 
  which 
  they 
  traverse. 
  Their 
  relations 
  for 
  

   the 
  first 
  three 
  miles 
  are 
  shown 
  in 
  the 
  following 
  figure. 
  

  

  The 
  distribution 
  of 
  the 
  formations 
  in 
  this 
  region 
  is 
  shown 
  with 
  

   considerable 
  distinctness 
  in 
  the 
  geologic 
  map. 
  The 
  Becraft 
  

   limestone 
  is 
  prominently 
  exposed 
  in 
  this 
  belt 
  in 
  cliffs 
  twenty 
  to 
  

   thirty 
  feet 
  in 
  height. 
  It 
  is 
  of 
  a 
  light 
  color, 
  massively 
  bedded, 
  

   semi-crystalline 
  in 
  grain 
  and 
  very 
  fossiliferous. 
  The 
  Oriskany 
  is 
  

   also 
  exposed 
  in 
  great 
  force 
  and 
  is 
  remarkably 
  fossiliferous. 
  It 
  is 
  

   a 
  silicious 
  limestone 
  with 
  occasional 
  streaks 
  of 
  chert, 
  which 
  is 
  

   deeply 
  weathered 
  to 
  a 
  light 
  snuff-colored, 
  spongy 
  rock, 
  filled 
  

   with 
  casts 
  and 
  impressions 
  of 
  fossils. 
  It 
  is 
  best 
  exposed 
  along 
  the 
  

   east 
  bank 
  of 
  Esopus 
  creek, 
  below 
  Glenerie, 
  where 
  the 
  fossils 
  

   occur 
  in 
  the 
  greatest 
  profusion 
  along 
  the 
  road. 
  As 
  shown 
  in 
  the 
  

   sections, 
  the 
  beds 
  gradually 
  pitch 
  to 
  the 
  southward, 
  and 
  a 
  mile 
  

   north 
  of 
  Lake 
  Katrine, 
  the 
  Oriskany 
  sandstone 
  pitches 
  beneath 
  

   the 
  Esopus 
  shales. 
  This 
  formation 
  extends 
  to 
  the 
  southward 
  in 
  

   a 
  broad 
  belt 
  of 
  rough 
  ridges 
  in 
  which 
  the 
  flexures 
  continue 
  to 
  

   the 
  Kingston 
  region. 
  This 
  belt 
  has 
  a 
  high 
  monoclinal 
  ridge 
  

   along 
  its 
  east 
  sides 
  constituted 
  by 
  Oriskan}^ 
  sandstone 
  and 
  the 
  

   Helderberg 
  limestones. 
  

  

  The 
  Hudson 
  river 
  formation 
  from 
  West 
  Camp 
  westward 
  is 
  in 
  

   greater 
  part 
  overlaid 
  by 
  clays 
  and 
  sands 
  which 
  constitute 
  terraces 
  

   extending 
  from 
  the 
  high 
  banks 
  of 
  the 
  Hudson 
  river 
  to 
  the 
  ridge 
  

   of 
  Helderberg 
  limestones. 
  Along 
  the 
  banks 
  of 
  the 
  Hudson 
  and 
  

   in 
  the 
  creeks 
  which 
  empty 
  into 
  it, 
  there 
  are 
  many 
  exposures, 
  

   notably 
  in 
  the 
  eastern 
  part 
  of 
  the 
  village 
  of 
  Saugerties. 
  The 
  

   formation 
  consists, 
  of 
  slates 
  with 
  interbedded, 
  fine-grained 
  mas- 
  

   sive 
  sandstones, 
  in 
  layers 
  from 
  two 
  inches 
  to 
  four 
  feet 
  in 
  thick- 
  

   ness. 
  The 
  slates 
  vary 
  from 
  dark 
  gray 
  to 
  black 
  in 
  color, 
  and 
  the 
  

  

  