﻿WEST 
  PLAIN 
  BKLT 
  

  

  4C0O 
  to 
  8GC0/I.E/. 
  

  

  Chif/lll 
  sedimtntary 
  

  

  HIGHLAND 
  BKLT 
  PA 
  UK 
  MTS. 
  

  

  10000 
  to 
  UmO/l-elevaliun, 
  

  

  100 
  miles 
  wide. 
  

  

  Chiefly 
  metarnorp'hic. 
  

  

  EAST 
  PLAJN 
  BELT 
  

   40C0,'y70CO./y.£7. 
  

   ChvJ'ly 
  sedimentary 
  

  

  Sound 
  dots 
  indicate 
  points 
  aliuve 
  13000 
  /eet 
  in 
  elevation, 
  

   A.Sout!i 
  West 
  District 
  . 
  

  

  PLATE 
  XXXIV 
  

   General 
  Orographic 
  Features 
  of 
  Colorado 
  

  

  