﻿] 
  BOSE 
  : 
  GEOLOGY 
  OF 
  THE 
  LOWER 
  NARBADA 
  VALLEY. 
  

  

  look 
  about 
  them. 
  But 
  they 
  are 
  so 
  patchy 
  and 
  pass 
  so 
  insensibly 
  into 
  the 
  

   metamorphics 
  that 
  they 
  could 
  not 
  very 
  well 
  be 
  separated 
  from 
  the 
  latter. 
  

   I 
  noted 
  the 
  occurrence 
  o£ 
  similar 
  slates 
  associated 
  with 
  metamorphic 
  

   limestone 
  west 
  of 
  Jobat, 
  as 
  at 
  Jowari, 
  Paneri, 
  &c. 
  The 
  gneiss 
  of 
  Ghung- 
  

   sia 
  and 
  Undari 
  would, 
  from 
  the 
  proximity 
  of 
  the 
  metamorphics, 
  be 
  more 
  

   satisfactorily 
  referred 
  to 
  these 
  than 
  to 
  the 
  Bijawars. 
  

  

  South 
  of 
  Rajpur, 
  north 
  and 
  east 
  of 
  the 
  ancient 
  town 
  and 
  fort 
  of 
  Ali, 
  

   there 
  is 
  a 
  hilly 
  tract 
  covered 
  with 
  thick 
  jungle 
  and 
  cut 
  into 
  by 
  deep 
  

   ravines 
  exposing 
  immense 
  thicknesses 
  of 
  granitoid 
  rocks, 
  the 
  commonest 
  

   member 
  of 
  which 
  is 
  similar 
  to 
  the 
  granitoid 
  gneiss 
  near 
  Jobat, 
  con- 
  

   taining 
  orthoclase, 
  quartz, 
  mica, 
  and 
  hornblende. 
  Here, 
  however, 
  there 
  

   is 
  some 
  evidence 
  of 
  the 
  rock 
  being 
  of 
  intrusive 
  origin. 
  At 
  Kanpur 
  and 
  

   several 
  other 
  places 
  there 
  lie 
  masses 
  of 
  a 
  dark-coloured, 
  almost 
  trappean- 
  

   looking, 
  nodular 
  rock, 
  with 
  fragments 
  of 
  quartz, 
  occasionally 
  very 
  large, 
  

   which 
  on 
  microscopic 
  examination 
  turns 
  out 
  to 
  be 
  a 
  trachytic 
  rock. 
  Or- 
  

   thoclase, 
  quartz, 
  and 
  what 
  appears 
  to 
  be 
  magnetite, 
  are 
  dissemminated 
  

   through 
  it 
  in 
  a 
  devitrified 
  matrix. 
  The 
  granitoid 
  rocks 
  pass 
  into 
  gneiss 
  

   or 
  schists 
  in 
  almost 
  every 
  direction 
  except 
  the 
  south-western, 
  where 
  they 
  

   abut 
  against 
  the 
  Deccan 
  trap 
  as 
  if 
  by 
  faulting. 
  

  

  Intrusive 
  doleritic 
  rocks 
  occur 
  throughout 
  the 
  whole 
  of 
  metamorphic 
  

   area, 
  all 
  probably 
  of 
  the 
  Deccan 
  trap 
  age. 
  Some 
  of 
  these 
  will 
  be 
  noticed 
  

   hereafter. 
  

  

  The 
  strike 
  of 
  the 
  gneiss 
  and 
  schists, 
  which 
  latter 
  are 
  generally 
  almost 
  

   vertical, 
  is 
  remarkably 
  constant, 
  pointing 
  north-north-west, 
  thus 
  differing 
  

   from 
  the 
  strike 
  of 
  the 
  metamorphics 
  in 
  the 
  Chandgarh-Nimawar 
  basin, 
  

   where 
  quite 
  as 
  constantly 
  it 
  takes 
  an 
  east-north-east 
  direction 
  . 
  

  

  CHAPTER 
  IV. 
  

  

  Bijawars. 
  

   i". 
  — 
  Nimdwar-Barwdi 
  Area. 
  

   At 
  Nimawar, 
  in 
  the 
  eastern 
  extremity 
  of 
  this 
  region, 
  there 
  is 
  a 
  quartzite 
  

   ridge 
  not 
  more 
  than 
  a 
  quarter 
  of 
  a 
  mile 
  in 
  length, 
  rising, 
  as 
  it 
  were, 
  out 
  of 
  

   ( 
  10 
  ) 
  

  

  