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  BOSE 
  : 
  GEOLOGY 
  OF 
  THE 
  LOWER 
  NARBADA 
  VALLEY. 
  

  

  Mollusca 
  and 
  the 
  Echinodermata 
  that 
  are 
  common 
  to 
  the 
  Deola-Chira- 
  

   khan 
  marl 
  and 
  the 
  Arialur 
  strata, 
  coupled 
  with 
  the 
  presence 
  of 
  several 
  

   European 
  cenomanian 
  forms, 
  would 
  have 
  helped 
  us 
  to 
  fix 
  the 
  geological 
  

   position 
  here 
  suggested 
  with 
  greater 
  precision. 
  

  

  Section 
  HI. 
  — 
  The 
  Coralline 
  Limestone. 
  

  

  Name. 
  — 
  This 
  limestone, 
  owing 
  to 
  its 
  extensive 
  use 
  as 
  the 
  principal 
  

   building 
  stone 
  in 
  the 
  Nimar 
  valley, 
  especially 
  at 
  the 
  now 
  ruined 
  Maho- 
  

   medan 
  town 
  and 
  fort 
  of 
  Mandu, 
  attracted 
  the 
  attention 
  of 
  some 
  of 
  the 
  

   earliest 
  observers. 
  As 
  early 
  as 
  1822, 
  1 
  Mr. 
  J. 
  B. 
  Fraser 
  noticed 
  it 
  in 
  the 
  

   buildings 
  of 
  Mandu, 
  and 
  speaks 
  of 
  it 
  simply 
  as 
  a 
  " 
  reddish 
  limestone 
  of 
  a 
  

   beautiful 
  and 
  remarkable 
  character. 
  " 
  2 
  But 
  the 
  editor 
  of 
  the 
  Geological 
  

   Transactions, 
  in 
  which 
  Eraser's 
  paper 
  appeared, 
  has 
  a 
  foot-note 
  describing 
  

   the 
  specimen 
  of 
  limestone 
  presented 
  by 
  Fraser 
  to 
  the 
  Geological 
  Society 
  

   as 
  containing 
  " 
  fragments 
  of 
  coral 
  and 
  small 
  specks 
  of 
  quartz/' 
  This 
  is, 
  

   I 
  believe, 
  the 
  first 
  mention 
  of 
  supposed 
  corals 
  in 
  the 
  limestone 
  destined 
  

   to 
  become 
  so 
  well 
  known 
  under 
  the 
  name 
  of 
  u 
  coralline/' 
  It 
  was, 
  however, 
  

   not 
  until 
  1854 
  that 
  it 
  was 
  so 
  christened 
  formally 
  by 
  Dr. 
  Carter. 
  3 
  

  

  Area, 
  lithology, 
  8fc. 
  — 
  The 
  coralline 
  limestone 
  of 
  Agarwara, 
  near 
  

   Barwai, 
  has 
  been 
  already 
  alluded 
  to. 
  It 
  is 
  next 
  found 
  at 
  Bowarla, 
  overly- 
  

   ing 
  the 
  group 
  last 
  described. 
  It 
  thins 
  out 
  westward 
  and 
  southward, 
  the 
  

   maximum 
  thickness 
  (about 
  30 
  feet) 
  being 
  found 
  in 
  the 
  Man 
  valley, 
  

   between 
  Deola 
  and 
  Kaehaoda, 
  and 
  between 
  Nimkhera 
  and 
  Ghursul. 
  

   Near 
  Tanda, 
  only 
  a 
  few 
  patches, 
  as 
  at 
  Dhaeri 
  and 
  Kherli, 
  not 
  more 
  than 
  

   3 
  or 
  4 
  feet 
  in 
  thickness, 
  were 
  met 
  with. 
  West 
  of 
  the 
  Wagni 
  it 
  is 
  rare, 
  

   having 
  been 
  noticed 
  at 
  only 
  a 
  few 
  places, 
  such 
  as 
  Khandlai, 
  south-west 
  of 
  

   Bag, 
  Phata 
  by 
  the 
  Hatni, 
  &c. 
  4 
  But 
  it 
  has 
  been 
  traced 
  to 
  as 
  far 
  west 
  as 
  

   Umrali, 
  near 
  Ali. 
  It 
  is 
  wanting 
  in 
  the 
  district 
  of 
  Kawant. 
  

  

  1 
  About 
  the 
  same 
  time 
  Dangerfield 
  noticed 
  the 
  li 
  oaestone 
  in 
  situ, 
  probably 
  in 
  the 
  

   neighbourhood 
  of 
  Chirakhan 
  and 
  Ghursul. 
  

  

  2 
  Geol. 
  Trans., 
  Ser. 
  2, 
  Vol. 
  I, 
  p. 
  156. 
  

  

  8 
  Journ. 
  Bomb. 
  Br. 
  R. 
  A. 
  S., 
  Vol. 
  V, 
  p. 
  237. 
  

  

  4 
  Amongst 
  Mr. 
  Fedden's 
  collection 
  of 
  the 
  season 
  1880-81, 
  from 
  Kattiwar, 
  there 
  are 
  

   specimens 
  of 
  polyzoan 
  limestone 
  which 
  look 
  very 
  much 
  like 
  the 
  " 
  coralline." 
  

  

  ( 
  ^ 
  ) 
  

  

  