﻿ENDLicH.] 
  SAWATCH 
  RANGE 
  RESUME. 
  175 
  

  

  at 
  a 
  point 
  like 
  Mount 
  San 
  Antonio, 
  for 
  instance, 
  almost 
  every 
  conceiv- 
  

   able 
  variation 
  can 
  be 
  collected. 
  

  

  Besides 
  the 
  volcanics 
  only 
  the 
  limited 
  areas 
  covered 
  by 
  metamorphic 
  

   rocks 
  occur 
  in 
  the 
  range. 
  As 
  stated 
  above, 
  they 
  indicate 
  a 
  corrugated 
  

   surface 
  at 
  the 
  time 
  of 
  the 
  trachytic 
  eruptions, 
  and 
  they 
  owe 
  their 
  present 
  

   exposure 
  to 
  their 
  elevation 
  during 
  that 
  period. 
  Of 
  interest 
  the 
  anti- 
  

   clinal 
  fold 
  under 
  station 
  94 
  may 
  eventually 
  prove 
  to 
  be. 
  It 
  will 
  be 
  

   remembered 
  that 
  through 
  the 
  Quartzite 
  group 
  of 
  the 
  1874 
  district, 
  an 
  

   anticlinal 
  axis 
  was 
  observed 
  to 
  follow 
  a 
  course 
  approximately 
  east 
  to 
  

   west. 
  Whether 
  there 
  could 
  possibly 
  be 
  any 
  connection 
  between 
  the 
  

   two, 
  obscured 
  by 
  superincumbent 
  volcanics, 
  I 
  am 
  unable 
  even 
  to 
  sur- 
  

   mise. 
  In 
  case 
  there 
  were, 
  however, 
  it 
  would 
  be 
  an 
  important 
  matter 
  to 
  

   have 
  the 
  connection 
  established. 
  Probably 
  Silurian 
  and 
  Devonian 
  strata 
  

   furnished 
  the 
  material 
  that 
  now 
  we 
  find 
  as 
  quartzites, 
  granites, 
  and 
  

   schists. 
  These 
  formations 
  have 
  been 
  so 
  generally 
  subjected 
  to 
  meta- 
  

   morphosing 
  influences 
  in 
  that 
  region 
  of 
  the 
  Eocky 
  Mountains, 
  that 
  the 
  

   assumption 
  referring 
  them 
  to 
  the 
  same 
  origin 
  seems 
  justified. 
  

  

  