﻿Plate 
  3 
  

  

  

  .^^^ 
  '^^^ 
  

  

  

  l?r|^---^^'^vCfm^-a^#.. 
  , 
  ■ 
  

  

  i 
  

  

  

  1 
  

  

  ■$ 
  

  

  

  

  W. 
  J. 
  Miller, 
  photo 
  

  

  A 
  typical 
  Precambric 
  exposure 
  y> 
  mile 
  north 
  of 
  Lyons 
  Falls 
  sta- 
  

   tion 
  showing 
  the 
  smoothed, 
  glaciated 
  character 
  of 
  the 
  surface. 
  The 
  

   rock 
  is 
  a 
  syenitic 
  facies 
  of 
  the 
  syenite-Grenville 
  mixed 
  gneisses. 
  

  

  