﻿Plate 
  3 
  

  

  GNEISS 
  

  

  CRYSTALLINE 
  ANORTHOSITE 
  

  

  ExXyX^H 
  

  

  CAMBRIAN 
  LOWER 
  SILURIAN 
  GLACIAL 
  

  

  C»LCi 
  

  

  GNEISSOID 
  

   ANORTHOSITE 
  OR 
  GABBRO 
  

  

  LIMESTONE 
  

   AND 
  BLACK 
  SCHISTS 
  

  

  POTSDAM 
  SAND 
  

   SCALE 
  OF 
  MILES 
  

  

  r 
  c 
  *" 
  GRAVELS 
  ETC. 
  

  

  PRECAMB 
  QUARTZITE 
  

  

  Geological 
  map 
  of 
  Whitehall 
  township, 
  Washington 
  co. 
  

  

  