﻿10 
  MEDLTCOTT 
  : 
  SATPURA 
  COAL-BASIN. 
  

  

  Section 
  2. 
  — 
  (a). 
  The 
  Jabalpur 
  group. 
  

  

  The 
  division 
  (a) 
  represented 
  as 
  capping 
  the 
  northern 
  range 
  of 
  hills, 
  

  

  _, 
  , 
  ,, 
  „,, 
  , 
  , 
  and 
  as 
  the 
  uppermost 
  band 
  of 
  strata 
  in 
  the 
  whole 
  

   Connects 
  the 
  featpura 
  ri 
  

  

  and 
  South 
  Riwa 
  basins. 
  section, 
  is 
  but 
  a 
  remnant 
  of 
  a 
  group 
  that 
  attains 
  

   a 
  considerable 
  thickness 
  and 
  extension 
  to 
  the 
  east; 
  and 
  has 
  there 
  

   been 
  latterly 
  called 
  the 
  Jabalpur 
  group. 
  The 
  eastern 
  limit 
  of 
  the 
  

   Satpura 
  coal-basin 
  must 
  be 
  somewhat 
  arbitrary. 
  If 
  unbroken 
  con- 
  

   tinuity 
  of 
  rocks 
  belonging 
  to 
  these 
  formations 
  were 
  to 
  be 
  the 
  rule 
  

   applied, 
  the 
  area 
  would 
  extend 
  up 
  to 
  the 
  Suner, 
  the 
  eastern 
  boundary 
  

   of 
  the 
  Narsingpur 
  district, 
  fifty 
  miles 
  beyond 
  the 
  Sftariva. 
  Still 
  

   further 
  eastwards 
  there 
  is 
  sufficient 
  evidence, 
  in 
  repeated 
  small 
  out- 
  

   crops 
  along 
  the 
  edge 
  of 
  the 
  trap, 
  that 
  there 
  is 
  real 
  continuity 
  of 
  these 
  

   rocks 
  up 
  to 
  Jabalpur, 
  and 
  similarly 
  beyond 
  it 
  into 
  the 
  South 
  Riwa 
  

   coal-basin. 
  At 
  Jabalpur 
  the 
  group 
  consists 
  of 
  massive 
  softish 
  sandstone 
  

  

  with 
  subordinate 
  white 
  and 
  pale-tinted 
  clays 
  irre- 
  

   The 
  group 
  at 
  Jabalpur. 
  . 
  

  

  gularly 
  associated. 
  They 
  lap 
  up 
  over 
  a 
  flatly 
  

  

  denuded 
  surface 
  of 
  crystalline 
  metamorphics, 
  the 
  boundary 
  being 
  very 
  

   tortuous; 
  and 
  at 
  places 
  they 
  pass 
  under 
  the 
  alluvium 
  of 
  the 
  valley, 
  be- 
  

   tween 
  hills 
  of 
  granitic 
  rock, 
  so 
  that 
  their 
  true 
  limit 
  in 
  this 
  direction 
  is 
  

   obscure. 
  In 
  a 
  well 
  in 
  the 
  old 
  jail 
  compound 
  coal 
  was 
  found 
  at 
  a 
  depth 
  

   of 
  70 
  feet, 
  probably 
  at, 
  or 
  close 
  to, 
  the 
  very 
  base 
  of 
  the 
  formation. 
  

   In 
  the 
  small 
  section 
  exposed 
  in 
  the 
  Narbada 
  river 
  the 
  coal 
  is 
  seen 
  to 
  rest 
  

   upon 
  the 
  steep 
  edge 
  of 
  the 
  metamorphics. 
  Near 
  the 
  boundary 
  the 
  sand- 
  

   stone 
  is 
  locally 
  conglomeritic. 
  

  

  In 
  the 
  basin 
  of 
  the 
  Umar 
  (Oomur), 
  the 
  first 
  considerable 
  stream 
  

  

  in 
  the 
  Narsingpur 
  district, 
  there 
  is 
  a 
  larger 
  

  

  In 
  the 
  Umar 
  valley. 
  . 
  , 
  

  

  exposure 
  or 
  the 
  Jabalpur 
  group 
  than 
  any 
  occur- 
  

   ring 
  between 
  this 
  and 
  the 
  Mahanadi 
  in 
  South 
  Riwa 
  ; 
  and 
  from 
  the 
  Umar 
  

   westwards 
  there 
  are 
  increasingly 
  large 
  areas 
  exposed 
  in 
  the 
  successive 
  

   stream-valleys. 
  The 
  rocks 
  in 
  the 
  Umar 
  area 
  are 
  in 
  every 
  way 
  like 
  those 
  

   at 
  Jabalpur 
  : 
  they 
  He 
  flatly 
  ; 
  and 
  the 
  encircling 
  hills 
  being 
  low, 
  there 
  

   ( 
  H2 
  ) 
  

  

  