﻿LOWER 
  CRETACEOUS 
  SERIES 
  : 
  NIMAR 
  SANDSTONE. 
  35 
  

  

  animals 
  which 
  have 
  left 
  clear 
  tracks 
  in 
  the 
  fine-grained 
  upper 
  beds 
  of 
  

   the 
  Nimar 
  sandstone 
  have 
  been 
  satisfactorily 
  determined. 
  In 
  the 
  mean- 
  

   time, 
  the 
  fact 
  of 
  their 
  occurrence 
  shows 
  that 
  these 
  have 
  been 
  deposited 
  

   like 
  the 
  oyster-beds 
  in 
  shallow 
  water 
  close 
  to 
  the 
  shore. 
  

  

  The 
  lower 
  portion 
  of 
  the 
  Nimar 
  sandstone, 
  especially 
  the 
  very 
  

   lowest, 
  has 
  a 
  strong 
  resemblance 
  to 
  the 
  Gondwana 
  beds 
  of 
  Katkut 
  

   and 
  Barwai 
  ; 
  both 
  are 
  equally 
  unf 
  ossilif 
  erous, 
  yielding 
  only 
  pieces 
  of 
  

   drift-wood. 
  But 
  whereas 
  no 
  stratigraphical 
  break 
  has 
  been 
  hitherto 
  

   observed 
  between 
  the 
  former 
  and 
  the 
  overlying 
  deposits, 
  a 
  clear 
  uncon- 
  

   formity 
  has 
  been 
  shown 
  to 
  separate 
  the 
  latter. 
  Under 
  these 
  circum- 
  

   stances 
  it 
  is 
  difficult 
  to 
  say 
  with 
  certainty 
  whether 
  the 
  lower 
  portion 
  of 
  

   the 
  series 
  under 
  discussion 
  is 
  of 
  the 
  same 
  age 
  as 
  the 
  Barwai 
  and 
  Katkut 
  

   deposits 
  : 
  if 
  different, 
  the 
  upper 
  beds 
  of 
  the 
  former 
  overlap 
  the 
  lower 
  ; 
  

   and 
  if 
  the 
  same, 
  there 
  would 
  be 
  at 
  least 
  a 
  local 
  break 
  in 
  the 
  series 
  ; 
  

   but 
  the 
  section 
  (that 
  between 
  ii'garwara 
  and 
  Yalam) 
  from 
  which 
  this 
  

   conclusion 
  is 
  arrived 
  at, 
  is 
  very 
  obscure. 
  

  

  If 
  the 
  strata 
  just 
  considered 
  be 
  of 
  Mahadeva 
  age, 
  — 
  a 
  point 
  which 
  is 
  

   far 
  from 
  clear, 
  — 
  their 
  western 
  continuation 
  may 
  have 
  some 
  member 
  

   or 
  other 
  of 
  the 
  lower 
  Gondwanas 
  at 
  the 
  base. 
  Hitherto, 
  however, 
  

   nothing 
  has 
  been 
  found 
  to 
  warrant 
  such 
  a 
  conclusion. 
  

  

  CHAPTER 
  VIII. 
  

  

  UPPER 
  CRETACEOUS 
  SERIES 
  (AQUEOUS). 
  

  

  The 
  series 
  described 
  in 
  the 
  last 
  chapter 
  is 
  succeeded 
  above 
  by 
  cal- 
  

   careous 
  rocks, 
  divisible 
  into 
  the 
  following 
  groups 
  (in 
  natural 
  order) 
  : 
  — 
  

  

  (iv) 
  Lametas 
  . 
  . 
  . 
  (Lacustrine), 
  

  

  (iii) 
  Coral 
  line 
  limestone 
  -v 
  

  

  (ii) 
  Deola 
  and 
  Ckirakhan 
  marl 
  I 
  (Marine). 
  

  

  (i) 
  Nodular 
  limestone 
  j 
  

  

  None 
  of 
  these 
  groups 
  attains 
  to 
  any 
  great 
  thickness, 
  and 
  altogether 
  

   they 
  are 
  nowhere 
  more 
  than 
  80 
  feet 
  thick. 
  Starting 
  from 
  the 
  eastern 
  

   extremity 
  of 
  our 
  area 
  ; 
  limestones 
  with 
  marine 
  fossils 
  are 
  first 
  met 
  with 
  

  

  ( 
  35 
  ) 
  

  

  