﻿REPORT 
  OF 
  THE 
  DIRECTOR 
  10,12 
  21 
  

  

  On 
  the 
  east 
  the 
  gneissic 
  spur 
  is 
  overlain 
  by 
  schist 
  which 
  west 
  

   of 
  Pawling 
  forms 
  what 
  is 
  known 
  as 
  " 
  West 
  Pawling 
  mountain 
  " 
  

   and 
  farther 
  north 
  between 
  the 
  " 
  Clove 
  " 
  and 
  the 
  Dover 
  valley 
  

   forms 
  " 
  Chestnut 
  ridge." 
  This 
  garnetiferous 
  mica 
  schist, 
  at 
  

   places 
  showing 
  well-developed 
  crystals 
  of 
  cyanite, 
  is 
  regarded 
  as 
  

   the 
  metamorphosed 
  derivative 
  of 
  the 
  " 
  Hudson 
  river 
  " 
  slates. 
  

   West 
  of 
  the 
  " 
  Clove" 
  it 
  grades 
  into 
  grits, 
  phyllites 
  and 
  slates. 
  

  

  At 
  Whaley 
  pond 
  is 
  a 
  patch 
  of 
  limestone 
  known 
  as 
  the 
  " 
  white 
  

   ledge 
  " 
  which 
  is 
  quite 
  isolated 
  from 
  any 
  other 
  limestone 
  out- 
  

   crops. 
  It 
  is 
  overlain 
  by 
  a 
  quartzite, 
  very 
  similar 
  to 
  the 
  basal 
  

   quartzite 
  and 
  while 
  clearly 
  lying 
  against 
  the 
  gneiss 
  at 
  places, 
  ap- 
  

   parently 
  grades 
  upward 
  into 
  the 
  schist 
  and 
  appears 
  to 
  be 
  a 
  mem- 
  

   ber 
  of 
  that 
  formation. 
  The 
  relations 
  of 
  gneiss 
  and 
  schist 
  along 
  

   the 
  eastern 
  margin 
  of 
  the 
  spur 
  are 
  still 
  obscure. 
  

  

  Extending 
  from 
  the 
  southern 
  to 
  the 
  northern 
  boundary 
  of 
  the 
  

   quadrangle 
  through 
  the 
  townships 
  of 
  Patterson, 
  Pawling 
  and 
  

   Dover 
  is 
  the 
  Dover-Pawling 
  limestone 
  valley. 
  This 
  has 
  been 
  

   mapped 
  as 
  far 
  north 
  as 
  Wingdale. 
  The 
  eastern 
  and 
  western 
  

   margins 
  of 
  the 
  valley 
  are 
  irregular 
  and 
  in 
  many 
  places 
  show 
  a 
  

   confusion 
  of 
  schist 
  and 
  limestone 
  patches 
  of 
  varying 
  sizes 
  in 
  jux- 
  

   taposition 
  and 
  in 
  such 
  further 
  relation 
  as 
  to 
  suggest 
  that 
  they 
  

   are 
  dismembered 
  portions 
  caused 
  by 
  disturbances 
  from 
  beneath. 
  

   Two 
  miles 
  north 
  of 
  Pawling 
  at 
  " 
  Corbin 
  hill 
  " 
  is 
  a 
  large 
  patch 
  of 
  

   gneiss 
  which 
  is 
  believed 
  to 
  be 
  an 
  inlier 
  of 
  the 
  Precambric 
  rocks 
  ; 
  

   a 
  broken 
  piece 
  of 
  the 
  Precambric 
  floor 
  thrust 
  up 
  among 
  the 
  

   younger 
  rocks. 
  It 
  is 
  bounded 
  on 
  the 
  east, 
  south 
  and 
  west 
  by 
  

   limestone 
  and 
  on 
  the 
  north 
  by 
  schist, 
  and 
  the 
  field 
  relations, 
  as 
  

   thus 
  far 
  studied, 
  favor 
  the 
  view 
  that 
  all 
  the 
  contracts 
  are 
  faulted. 
  

   The 
  northwestern 
  slope 
  of 
  the 
  hill 
  is 
  heavily 
  drift-covered. 
  

  

  East 
  of 
  the 
  Dover-Pawling 
  valley, 
  as 
  far 
  north 
  as 
  Wingdale, 
  

   the. 
  schist 
  rises 
  as 
  a 
  high 
  mass 
  of 
  passes 
  eastward 
  into 
  Connec- 
  

   ticut. 
  

  

  SURFICIAL 
  GEOLOGY 
  

  

  In 
  continuation 
  of 
  his 
  previous 
  observations, 
  work 
  was 
  carried 
  

   on 
  by 
  Prof. 
  H. 
  L. 
  Fairchild 
  in 
  the 
  Hudson-Champlain 
  valley. 
  

  

  In 
  the 
  report 
  for 
  191 
  1 
  (Museum 
  Bulletin 
  158, 
  pages 
  32-35), 
  the 
  

   hypothetical 
  glacial 
  Lake 
  Vermont 
  of 
  Woodworth 
  (Museum 
  

   Bulletin 
  84) 
  was 
  provisionally 
  accepted, 
  and 
  some 
  high 
  level 
  

   shore 
  features 
  about 
  Covey 
  hill 
  and 
  in 
  the 
  St 
  Lawrence 
  valley 
  

   were 
  correlated 
  with 
  it. 
  Some 
  yet 
  higher 
  beach 
  phenomena 
  

  

  