﻿IO 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  the 
  vicinity 
  of 
  Black 
  lake. 
  The 
  uplift 
  was 
  accompanied 
  by 
  dislo- 
  

   cations 
  of 
  the 
  peneplain 
  surface, 
  owing 
  to 
  movements 
  along 
  the 
  

   great 
  fault 
  planes 
  of 
  the 
  region, 
  which 
  broke 
  up 
  the 
  uniform 
  sur- 
  

   face 
  into 
  a 
  mosaic 
  of 
  flat-topped 
  blocks 
  at 
  varying 
  levels. 
  Because 
  

   of 
  this 
  dislocation 
  and 
  the 
  modifying 
  effects 
  of 
  subsequent 
  erosion, 
  

   the 
  recognition 
  of 
  the 
  peneplain 
  surface 
  in 
  the 
  eastern 
  Adirondacks 
  

   is 
  a 
  matter 
  of 
  considerable 
  difficulty. 
  The 
  western 
  Adirondacks 
  

   were 
  uplifted 
  without 
  dislocation, 
  and 
  there 
  the 
  peneplain 
  is 
  easily 
  

   recognized. 
  

  

  The 
  Adirondack 
  highland 
  is 
  a 
  moderately 
  rugged 
  region 
  with 
  

   much 
  bare 
  rock 
  and 
  comparatively 
  little 
  good 
  soil, 
  and 
  is 
  forest- 
  

   covered 
  throughout. 
  In 
  winter 
  it 
  is 
  tenanted 
  by 
  the 
  lumberman, 
  

   in 
  summer 
  by 
  the 
  tourist 
  and 
  the 
  river-driver. 
  The 
  population 
  

   is 
  scanty 
  and 
  scattered. 
  The 
  region 
  is 
  strangely 
  poor 
  in 
  mineral 
  

   wealth. 
  But 
  the 
  forest 
  and 
  the 
  water 
  power 
  are 
  of 
  great 
  value 
  ; 
  

   and 
  no 
  less 
  so 
  are 
  the 
  invigorating 
  climate 
  and 
  the 
  charm 
  and 
  

   beauty 
  of 
  wood 
  and 
  water. 
  

  

  THE 
  MOHAWK 
  LOWLAND 
  

  

  Since 
  the 
  uplift 
  of 
  the 
  Mesozoic 
  peneplain, 
  the 
  weaker 
  rocks 
  

   of 
  the 
  region 
  have 
  been 
  deeply 
  eroded. 
  Along 
  belts 
  of 
  weak 
  rock, 
  

   valleys 
  have 
  been 
  carved, 
  the 
  valley 
  bottoms 
  representing 
  the 
  

   beginning 
  of 
  development 
  of 
  a 
  new 
  and 
  lower 
  peneplain. 
  Not 
  far 
  

   south 
  of 
  the 
  Adirondacks 
  runs 
  a 
  great, 
  east-west 
  belt 
  of 
  weak 
  

   shales, 
  and 
  into 
  them 
  the 
  valley 
  of 
  the 
  Mohawk 
  has 
  been 
  carved 
  

   as 
  a 
  great 
  belt 
  of 
  lowland 
  between 
  the 
  Adirondack 
  plateau 
  on 
  the 
  

   north 
  and 
  the 
  plateau 
  of 
  southern 
  New 
  York. 
  Great 
  faults 
  cross 
  

   the 
  valley 
  bringing 
  up 
  masses 
  of 
  more 
  resistant 
  rock, 
  as 
  at 
  Little 
  

   Falls, 
  St 
  Johnsville, 
  Sprakers, 
  Tribes 
  Hill 
  and 
  Hoffmans 
  . 
  Ferry, 
  

   and 
  in 
  these 
  the 
  lower 
  valley 
  narrows 
  and 
  its 
  walls 
  steepen. 
  Other- 
  

   wise 
  the 
  valley 
  is 
  broad 
  and 
  wide. 
  

  

  East 
  of 
  Floffmans 
  it 
  becomes 
  especially 
  wide, 
  on 
  approach 
  to 
  

   the 
  region 
  of 
  deformed 
  rocks 
  of 
  eastern 
  New 
  York, 
  in 
  which 
  the 
  

   strike 
  of 
  the 
  rocks 
  approximates 
  a 
  north-south 
  direction. 
  The 
  

   belt 
  of 
  shale 
  broadens 
  northward, 
  curving 
  around 
  to 
  merge 
  with 
  

   the 
  Hudson 
  valley 
  lowland. 
  

  

  HUDSON 
  VALLEY 
  LOWLAND 
  

   From 
  Fort 
  Edward 
  to 
  Poughkeepsie 
  the 
  Fludson 
  occupies 
  a 
  

   broad, 
  often 
  very 
  broad, 
  valley 
  eroded 
  in 
  a 
  belt 
  of 
  soft 
  shales, 
  

   quite 
  similar 
  to 
  the 
  Mohawk 
  valley. 
  The 
  shales 
  are 
  also 
  of 
  quite 
  

  

  