﻿TKIASSIC 
  GROUP. 
  129 
  

  

  well 
  founded 
  and 
  laudable 
  jealousy 
  which 
  exists 
  in 
  the 
  minds 
  of 
  many 
  

   geologists 
  touching' 
  the 
  introduction 
  of 
  faults 
  which 
  are 
  incapable 
  of 
  

   ocular 
  demonstration 
  ; 
  but 
  it 
  is 
  possible 
  to 
  carry 
  this 
  to 
  the 
  opposite 
  

   extreme, 
  and 
  reject 
  the 
  simpler 
  explanation 
  of 
  a 
  faulted 
  boundary, 
  in 
  

   favor 
  of 
  a 
  system 
  of 
  most 
  complicated 
  geological 
  re-actions, 
  which 
  have 
  to 
  

   be 
  admitted 
  if 
  the 
  simpler 
  view 
  is 
  rejected. 
  Admittedly 
  it 
  is 
  in 
  most 
  cases 
  

   a 
  balance 
  of 
  probabilities, 
  and 
  in 
  this 
  instance 
  I 
  consider 
  the 
  balance 
  tends 
  

   to 
  indicate 
  a 
  fault. 
  The 
  case 
  may 
  be 
  thus 
  stated 
  : 
  On 
  the 
  East 
  of 
  the 
  

   range 
  outside 
  of 
  the 
  Axial 
  area 
  a 
  belt 
  of 
  Nummulitic 
  rocks 
  comes 
  in. 
  

   These 
  Nummulitic 
  rocks 
  extend 
  South 
  far 
  beyond 
  the 
  termination 
  of 
  the 
  

   Axial 
  group, 
  and 
  to 
  the 
  East 
  they 
  disappear 
  beneath 
  the 
  newer 
  Tertiaries. 
  

   At 
  their 
  junction 
  with 
  the 
  Axial 
  group 
  they 
  are 
  highly 
  inclined, 
  the 
  beds 
  

   of 
  both 
  groups 
  being 
  alike 
  packed 
  together, 
  squeezed, 
  and 
  contorted 
  by 
  the 
  

   forces 
  whereby 
  the 
  Arakan 
  range 
  has 
  been 
  produced. 
  South 
  of 
  where 
  the 
  

   Axials 
  disappear, 
  these 
  beds 
  pass 
  down, 
  without 
  any 
  break 
  that 
  I 
  have 
  

   been 
  able 
  to 
  detect, 
  into 
  the 
  Negrais 
  group, 
  which 
  in 
  its 
  turn 
  passes 
  

   down, 
  as 
  far 
  as 
  can 
  be 
  at 
  present 
  seen, 
  into 
  the 
  Cretaceous 
  group, 
  so 
  largely 
  

   developed 
  in 
  the 
  Sandoway 
  district, 
  on 
  the 
  Western 
  side 
  of 
  the 
  Arakan 
  

   range. 
  It 
  seems, 
  therefore, 
  that 
  there 
  is 
  no 
  bed 
  which 
  can 
  be 
  identified 
  

   either 
  as 
  the 
  basal 
  member 
  of 
  the 
  Nummulitic 
  group, 
  or 
  of 
  any 
  of 
  the 
  older 
  

   secondary 
  rocks 
  underlying 
  it, 
  though 
  at 
  the 
  same 
  time 
  there 
  is 
  no 
  proof 
  

   that 
  the 
  junction 
  of 
  the 
  Nummulities 
  and 
  Axials 
  was 
  not 
  one 
  of 
  original 
  

   unconformity 
  ; 
  but 
  if 
  this 
  is 
  assumed, 
  there 
  is 
  the 
  difficulty 
  of 
  accounting 
  

   for 
  the 
  absence 
  of 
  the 
  Cretaceous 
  group 
  of 
  Sandoway 
  from 
  the 
  Eastern 
  

   side 
  of 
  the 
  range, 
  and 
  the 
  general 
  geological 
  features 
  and 
  history 
  of 
  the 
  

   country 
  must 
  be 
  borne 
  in 
  mind 
  fully 
  to 
  estimate 
  the 
  gravity 
  of 
  this 
  

   objection. 
  To 
  make 
  this 
  clearer, 
  let 
  us 
  consider 
  the 
  general 
  character 
  of 
  

   a 
  few 
  cfoss 
  sections 
  of 
  the 
  range, 
  which 
  may 
  thus 
  be 
  epitomised. 
  

  

  Anywhere 
  below 
  the 
  point 
  where 
  the 
  Axials 
  terminate, 
  the 
  transverse 
  

   section 
  of 
  the 
  Arakan 
  range 
  displays 
  a 
  great 
  series 
  of 
  beds 
  arranged 
  

   more 
  or 
  less 
  in 
  anticlinal 
  fashion, 
  consisting 
  of 
  altered 
  rocks 
  (Negrais 
  

   r 
  ( 
  317 
  ) 
  

  

  