﻿Plate 
  10 
  

  

  The 
  Whirlpool 
  rapids 
  and 
  American 
  bank, 
  looking 
  north. 
  The 
  talus 
  above 
  the 
  gorge 
  road 
  covers 
  the 
  

   upper 
  Medina 
  sandstones 
  and 
  shales. 
  The 
  lowest 
  projecting 
  ledge 
  consists 
  of 
  the 
  two 
  Clinton 
  lime- 
  

   stones; 
  the 
  talus 
  above 
  that 
  covers 
  the 
  Rochester 
  shales, 
  and 
  the 
  upper 
  cliff 
  is 
  of 
  Lockport 
  limestone. 
  

   The 
  upper 
  gray 
  Medina 
  projects 
  in 
  one 
  place, 
  'and 
  shows 
  the 
  Clinton 
  shale 
  above 
  it. 
  

  

  