﻿BOUNDARIES. 
  33 
  

  

  at 
  the 
  time 
  of 
  deposition 
  ; 
  that 
  the 
  Vindhyan 
  scarp 
  on 
  the 
  north 
  

   side 
  of 
  the 
  Narbada 
  valley 
  was 
  then, 
  as 
  now, 
  the 
  water-shed 
  of 
  the 
  

   basin 
  ; 
  that 
  shallow 
  extensions 
  of 
  the 
  deposits 
  existed, 
  and 
  that 
  rem- 
  

   nants 
  of 
  them 
  may 
  now 
  exist, 
  within 
  the 
  Narbada 
  valley 
  proper. 
  Some 
  

   confirmation 
  of 
  this 
  view 
  may 
  be 
  found 
  in 
  the 
  fact 
  that 
  the 
  arrange- 
  

   ment 
  of 
  the 
  groups 
  in 
  the 
  main 
  basin 
  suggests 
  their 
  accumulation 
  from 
  

   the 
  south 
  ; 
  if, 
  as 
  is 
  now 
  generally 
  considered, 
  they 
  are 
  to 
  be 
  looked 
  upon 
  

   as 
  pluvial, 
  fluviatile, 
  and 
  lacustrine 
  deposits. 
  If, 
  indeed, 
  the 
  action 
  of 
  

   general 
  faulting 
  is 
  to 
  be 
  taken 
  into 
  account 
  for 
  the 
  disappearance 
  

   of 
  the 
  supposed 
  main-land, 
  it 
  must, 
  for 
  reasons 
  already 
  given 
  when 
  

   describing 
  the 
  border 
  groups, 
  be 
  placed 
  beyond 
  the 
  line 
  of 
  any 
  actual 
  

   junction 
  seen, 
  outside 
  the 
  fringing 
  ridges 
  of 
  metamorphic 
  rocks 
  ; 
  and 
  

   it 
  would, 
  from 
  the 
  point 
  of 
  view 
  now 
  under 
  notice 
  — 
  the 
  actual 
  low 
  

   ground 
  to 
  the 
  north 
  of 
  the 
  field 
  — 
  require 
  to 
  be 
  a 
  great 
  downthrow 
  on 
  

   the 
  north, 
  instead 
  of 
  on 
  the 
  south, 
  as 
  was 
  at 
  one 
  time 
  conjectured. 
  

  

  There 
  are 
  structural 
  features 
  at 
  the 
  boundary 
  that 
  may 
  be 
  inter- 
  

   preted 
  in 
  support 
  of 
  either 
  of 
  the 
  foregoing 
  sup- 
  

   Characters 
  of 
  the 
  

   houndary 
  east 
  of 
  the 
  positions 
  respectively 
  — 
  the 
  former 
  extension 
  or 
  

   Sakar. 
  m 
  . 
  

  

  non-extension 
  of 
  the 
  deposits. 
  The 
  overlapping 
  

  

  boundary 
  at 
  Jabalpiir 
  is 
  the 
  most 
  distinct 
  case 
  that 
  occurs 
  of 
  the 
  

   sedimentaries 
  stretching, 
  continuously 
  and 
  undisturbed, 
  between 
  and 
  

   almost 
  beyond 
  the 
  fringing 
  ridges 
  of 
  the 
  metamorphics, 
  and 
  there 
  

   becoming 
  lost 
  under 
  the 
  alluvium. 
  From 
  here 
  to 
  the 
  Sakar, 
  to 
  west 
  of 
  

   which 
  the 
  special 
  features 
  of 
  the 
  Satpura 
  basin 
  are 
  first 
  noticeable 
  ; 
  the 
  

   gaps 
  in 
  the 
  metamorphic 
  rocks 
  are 
  very 
  narrow. 
  The 
  region 
  of 
  the 
  

   Sher 
  lies 
  between 
  the 
  two 
  large 
  patches 
  of 
  schists 
  of 
  Srinagar 
  and 
  

   Kishanpiir 
  ; 
  and 
  the 
  boundary 
  in 
  the 
  interval 
  projects 
  beyond 
  its 
  posi- 
  

   tion 
  on 
  the 
  south 
  flanks 
  of 
  those 
  rock-masses, 
  apparently 
  corresponding 
  

   to 
  an 
  original 
  depressed 
  inflection 
  of 
  the 
  edge 
  of 
  the 
  basin. 
  At 
  

   places, 
  too, 
  as 
  at 
  Bachai, 
  the 
  sedimentaries 
  present 
  a 
  steep 
  edge 
  facing 
  

   the 
  plains. 
  Still 
  within 
  very 
  short 
  distances 
  there 
  are 
  low 
  outcrops 
  of 
  

   e 
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