﻿

  IGLE 
  

  

  LEGEND 
  

   amp] 
  11 
  boiite 
  mclUvSioii> 
  

  

  ^w^^^rl 
  

  

  I 
  CD 
  

  

  f 
  o 
  

   bJ 
  

   cr 
  

  

  Q_ 
  

  

  Grenville 
  gneisses. 
  

   Highly 
  metamorphosed, 
  

   sedimentary 
  rocks, 
  

   showing 
  a 
  distinct 
  

   gneissic 
  structu 
  re 
  . 
  

  

  Sya 
  

  

  Syeiiite-Grenville 
  mixed 
  

   gneisses. 
  Clearly 
  gneis- 
  

   soid 
  rocks 
  of 
  various 
  

   types, 
  but 
  mostly 
  Gren- 
  

   ville, 
  much 
  cut 
  up 
  by 
  

   intrusions 
  of 
  syenite. 
  

  

  ^~n 
  

  

  -'/Ati.:. 
  

  

  Precambric 
  rocks 
  ; 
  but 
  

   of 
  unknown 
  character 
  

   because 
  buried 
  under 
  

   heavj^ 
  Glacial 
  drift. 
  

  

  Stone 
  Quarries. 
  

  

  AB. 
  CD, 
  and 
  EF 
  are 
  

   structure 
  section 
  lines. 
  

   See 
  text 
  page 
  38. 
  

  

  