﻿Plate 
  2 
  

  

  Road 
  metal 
  quarry 
  in 
  Grenville 
  limestone 
  at 
  Theresa 
  near 
  the 
  falls. 
  

   The 
  limestone 
  bed 
  is 
  a 
  thin 
  one 
  in 
  the 
  general 
  schist 
  series 
  and 
  the 
  quarry- 
  

   face 
  is 
  down 
  the 
  dip, 
  here 
  75°. 
  At 
  the 
  upper 
  part 
  of 
  the 
  cliff 
  is 
  Potsdam 
  

   sandstone 
  with 
  irregular 
  contact 
  with 
  the 
  limestone, 
  and 
  showing 
  one 
  of 
  

   the 
  depressed 
  pockets 
  characteristic 
  of 
  these 
  contacts, 
  filled 
  with 
  weakly 
  

   cemented 
  calcareous 
  sandstone. 
  H. 
  P. 
  Gushing, 
  photo, 
  1907 
  

  

  