﻿, 
  . 
  SNEIS5 
  .. 
  C 
  RYSTALLINE 
  A 
  NORTHOS 
  ITE 
  GABBRO 
  CAMBRIAN 
  LOWER 
  SILURIAN 
  GLACIAL 
  

  

  ^■mWN 
  fcW 
  K 
  K 
  fl 
  \88i&8® 
  &*ikixi* 
  ^^m 
  ppnrpmj 
  sBg 
  ! 
  ■•■:.". 
  .yy. 
  i 
  

  

  LIMESTONE 
  POTSDAM 
  SAND 
  

   AND 
  BLACK 
  SCHISTS 
  

  

  GNEISSOID 
  

  

  GRAVELS 
  ETC. 
  

  

  ANORTHOSITE 
  OR 
  GABBRO 
  

  

  PRECAMB. 
  QUARTZITE 
  

  

  Washington 
  

  

  