﻿%4< 
  BOSS 
  : 
  GEOLOGY 
  OF 
  THE 
  LOWER 
  NARBADA 
  VALLEY. 
  

  

  stones 
  to 
  be 
  described 
  later 
  on. 
  The 
  beds 
  there 
  seen 
  are 
  thin-bedded, 
  

   fine-grained 
  sandstones, 
  which, 
  as 
  will 
  be 
  presently 
  seen, 
  belong 
  to 
  the 
  

   uppermost 
  portion 
  of 
  the 
  series. 
  Their 
  relation 
  to 
  the 
  sandstone 
  

   described 
  in 
  the 
  preceding 
  chapter 
  will 
  be 
  considered 
  in 
  the 
  sequel 
  in 
  

   connection 
  with 
  the 
  discussion 
  about 
  their 
  age. 
  

  

  Between 
  Chirdlchdn 
  and 
  Bag 
  . 
  — 
  Between 
  Yalam 
  and 
  Bowarla, 
  some 
  

   50 
  miles 
  to 
  the 
  west, 
  no 
  outcrops 
  of 
  aqueous 
  rocks 
  occur, 
  except 
  

   inter-trappean 
  limestones 
  of 
  the 
  Deecan 
  trap 
  formation. 
  At 
  Bowarla, 
  

   fossiliferous 
  limestones 
  clearly 
  of 
  the 
  same 
  period 
  as 
  those 
  of 
  Yalam 
  and 
  

   Ghatia 
  are 
  observed. 
  Their 
  base, 
  not 
  visible 
  here, 
  is 
  exposed 
  at 
  Chira- 
  

   kkan, 
  in 
  a 
  ravine 
  a 
  mile 
  north 
  of 
  the 
  village. 
  Here 
  between 
  the 
  lime- 
  

   stones 
  and 
  the 
  metamorphics 
  intervene 
  a 
  few 
  feet 
  of 
  coarse 
  sandstones. 
  

   These 
  are 
  much 
  better 
  seen 
  a 
  little 
  further 
  west, 
  at 
  the 
  junction 
  of 
  the 
  

   Man 
  with 
  the 
  Sukar. 
  The 
  thickness, 
  which 
  here 
  does 
  not 
  exceed 
  15 
  feet, 
  

   increases 
  to 
  the 
  west; 
  and 
  south 
  and 
  south-west 
  of 
  Bag, 
  as 
  by 
  the 
  

   Wagni, 
  it 
  rises 
  to 
  80 
  feet 
  or 
  more. 
  

  

  Proceeding 
  up 
  the 
  Man 
  valley 
  in 
  a 
  northern 
  direction, 
  the 
  sand- 
  

   stones 
  are 
  lost 
  sight 
  of 
  entirely 
  ; 
  and 
  the 
  limestones 
  repose 
  directly 
  upon 
  

   the 
  metamorphic 
  schists. 
  

  

  The 
  basal 
  beds 
  of 
  the 
  sandstone 
  series 
  are 
  thick 
  and 
  invariably 
  

   conglomeratic. 
  The 
  coDglomerates, 
  which 
  are 
  of 
  all 
  degrees 
  of 
  coarse- 
  

   ness, 
  1 
  are 
  succeeded 
  by 
  gritstones 
  and 
  sandstones, 
  having 
  variously 
  

   coloured, 
  thinly 
  laminated, 
  soft 
  and 
  friable, 
  shaly 
  and 
  marly 
  strata 
  

   interbedded. 
  The 
  beds 
  are 
  frequently 
  calcareous, 
  2 
  and 
  often 
  ferruginous. 
  

  

  The 
  sandstones 
  occur 
  in 
  the 
  valleys 
  of 
  the 
  streams 
  which 
  have 
  cut 
  

   through 
  the 
  upper 
  cretaceous 
  limestones. 
  When 
  the 
  outcrop 
  is 
  of 
  the 
  

   conglomerate, 
  pebbles 
  from 
  it, 
  either 
  weathering 
  out 
  on 
  the 
  surface 
  or 
  

   strewn 
  in 
  the 
  fields 
  by 
  disintegration, 
  form 
  a 
  characteristic 
  feature. 
  But 
  

   if 
  higher 
  beds 
  appear 
  at 
  the 
  surface, 
  they 
  are 
  usually 
  coloured 
  deep 
  red 
  

  

  1 
  Near 
  Bag, 
  as 
  at 
  Wagpura, 
  Limkhera, 
  &c, 
  some 
  of 
  the 
  pebbles, 
  which 
  are 
  derived 
  

   chiefly 
  from 
  the 
  gneissose 
  rocks, 
  measure 
  about 
  5 
  inches 
  in 
  diameter. 
  Close 
  to 
  the 
  junction 
  

   of 
  the 
  Sukar 
  with 
  the 
  Man, 
  south 
  of 
  Ghursul, 
  small 
  imperfectly 
  rounded 
  pebbles 
  weather 
  

   out 
  beautifully 
  in 
  rows 
  parallel 
  to 
  the 
  planes 
  of 
  bedding. 
  

  

  8 
  In 
  specimens 
  of 
  hardened 
  sandstone, 
  small 
  crystals 
  of 
  calcite 
  are 
  observed. 
  

  

  ( 
  *4 
  ) 
  

  

  