﻿GENERAL 
  STRATIGRAPHY. 
  35 
  

  

  Waive 
  any 
  theoretical 
  discussion 
  which, 
  might 
  seem 
  to 
  bear 
  on 
  the 
  ques- 
  

   tion, 
  and 
  endeavor 
  to 
  offer 
  a 
  solution 
  of 
  the 
  phenomenon 
  before 
  us 
  by 
  

   travelling 
  a 
  little 
  beyond 
  the 
  actual 
  area 
  of 
  Pegu. 
  It 
  must 
  be 
  borne 
  in 
  

   mind 
  that 
  the 
  Arakan 
  Range 
  is 
  the 
  most 
  Westerly, 
  not 
  of 
  two, 
  but 
  of 
  

   several 
  parallel 
  ranges, 
  whereof 
  the 
  second 
  is 
  the 
  Pegu, 
  and 
  the 
  third, 
  as 
  

   we 
  proceed 
  in 
  an 
  Easterly 
  direction, 
  the 
  Poungloung 
  Range, 
  loftier 
  than 
  

   either, 
  which 
  separates 
  the 
  Sittoung 
  from 
  the 
  Salwin. 
  The 
  Arakan 
  

   Range, 
  it 
  will 
  be 
  seen 
  (if 
  we 
  except 
  a 
  small 
  portion 
  near 
  the 
  frontier, 
  

   composed 
  of 
  beds 
  of 
  Triassic 
  age), 
  is 
  wholly 
  composed 
  of 
  beds 
  of 
  early 
  

   Tertiary 
  age 
  resting, 
  it 
  may 
  be 
  presumed, 
  on 
  Cretaceous 
  beds 
  which 
  rise 
  

   to 
  the 
  surface 
  in 
  Arakan 
  on 
  the 
  Western 
  side 
  of 
  the 
  range 
  ; 
  whilst 
  the 
  

   Pegu 
  Range 
  is 
  composed, 
  as 
  far 
  as 
  we 
  know, 
  wholly 
  of 
  beds 
  of 
  later 
  

   Tertiary 
  age 
  ; 
  these 
  two 
  ranges 
  together 
  embracing 
  a 
  belt 
  of 
  country 
  

   having 
  an 
  East 
  and 
  West 
  breadth 
  of 
  nearly 
  150 
  miles 
  and 
  almost 
  

   wholly 
  made 
  of 
  Tertiary 
  deposits. 
  

  

  The 
  third 
  or 
  Poungloung 
  Range 
  holds 
  the 
  same 
  general 
  direction 
  as 
  

   the 
  others, 
  and 
  although 
  it 
  has 
  not 
  been 
  so 
  completely 
  examined 
  as 
  they 
  

   have, 
  yet 
  enough 
  is 
  known 
  of 
  its 
  composition 
  to 
  throw 
  considerable 
  light 
  

   on 
  the 
  relations 
  between 
  it 
  and 
  the 
  others, 
  as 
  it 
  consists 
  of 
  two 
  distinct 
  

   groups 
  of 
  rocks, 
  an 
  older 
  and 
  metamorphic 
  one, 
  and 
  a 
  younger 
  one 
  of 
  

   Carboniferous 
  age, 
  to 
  which 
  the 
  picturesque 
  limestone 
  ranges 
  bordering 
  

   the 
  Salwin, 
  and 
  the 
  grotesque 
  insular 
  hills 
  of 
  the 
  same 
  rock 
  near 
  

   Moulmein, 
  belong. 
  

  

  The 
  Poungloung 
  Range 
  in 
  fact 
  forms 
  approximately, 
  a 
  portion 
  of 
  

   the 
  margin 
  of 
  that 
  vast 
  oceanic 
  basin 
  wherein 
  the 
  Secondary 
  and. 
  

   Tertiary 
  deposits 
  now 
  met 
  with 
  to 
  the 
  West 
  of 
  it 
  were 
  deposited; 
  

   and 
  we 
  may 
  feel 
  sure 
  that, 
  whatever 
  may 
  have 
  been 
  the 
  determin- 
  

   ing 
  cause 
  of 
  its 
  direction, 
  we 
  see 
  in 
  it 
  a 
  perfectly 
  adequate 
  and 
  

   potential 
  cause, 
  for 
  the 
  direction 
  and 
  parallelism 
  of 
  the 
  ranges 
  to 
  the 
  

   east 
  of 
  it, 
  composed 
  of 
  such 
  very 
  much 
  younger 
  groups. 
  Of 
  the 
  com- 
  

   paratively 
  recent 
  origin 
  of 
  both 
  the 
  Arakan 
  and 
  Pegu 
  Yomahs 
  there 
  can 
  

  

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  223 
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