﻿302 
  W. 
  Lindgren 
  — 
  Granitic 
  Rocks 
  of 
  California. 
  

  

  approximately 
  known 
  age 
  in 
  adjoining 
  areas, 
  and 
  they 
  there- 
  

   fore 
  possess 
  a 
  strong 
  degree 
  of 
  probability. 
  

  

  EZZI 
  

  

  E 
  

  

  A 
  B 
  C 
  D 
  

  

  A, 
  Sedimentary 
  slates 
  and 
  schists. 
  B, 
  Augite 
  porphyrite. 
  C, 
  Granitite. 
  

   D, 
  Granodiorite. 
  E, 
  Diorite 
  and 
  Gabbro. 
  

  

  Under 
  the 
  name 
  of 
  the 
  Calaveras 
  formation 
  the 
  beds 
  of 
  

   Paleozoic 
  age 
  have 
  been 
  comprised 
  which 
  cannot 
  at 
  present 
  be 
  

   farther 
  subdivided. 
  The 
  larger 
  part 
  of 
  them 
  probably 
  belong 
  

   to 
  the 
  lower 
  or 
  middle 
  Carboniferous. 
  To 
  this 
  formation 
  all 
  

   of 
  the 
  sedimentary 
  rocks 
  along 
  the 
  western 
  boundary 
  of 
  the 
  

  

  