﻿51 
  

  

  Section 
  12. 
  — 
  Practical 
  and 
  General 
  Conclusions. 
  

   The 
  details 
  given 
  in 
  the 
  foregoing 
  sections 
  seem 
  to 
  warrant 
  the 
  fol- 
  

   tiall 
  lowing 
  conclusions 
  upon 
  the 
  stratigraphical 
  fea- 
  

   original. 
  tures 
  of 
  the 
  Satpura, 
  coal-basin. 
  The 
  present 
  

  

  outline 
  may 
  be 
  taken 
  to 
  represent 
  approximately 
  the 
  original 
  area 
  of 
  

   deposition. 
  Along 
  both 
  the 
  north 
  and 
  the 
  south 
  boundaries, 
  natural 
  

   (unfaulted) 
  contact 
  is 
  the 
  rule 
  at 
  the 
  exposed 
  sections. 
  This 
  does 
  

   not 
  preclude 
  former 
  overlapping 
  extension 
  of 
  one 
  or 
  more 
  of 
  the 
  groups, 
  

   possibly 
  connecting 
  this 
  field 
  with 
  others 
  of 
  the 
  same 
  series, 
  over 
  an 
  

   irregular 
  intervening 
  surface 
  of 
  metamorphic 
  rocks. 
  In 
  the 
  transverse 
  

   (north-south) 
  direction 
  limitation 
  is 
  also 
  proved 
  by 
  the 
  arrangement 
  of 
  

   the 
  groups 
  within 
  the 
  basin. 
  East 
  of 
  Delakari, 
  the 
  Pachmari 
  sandstone 
  

   laps 
  up 
  on 
  the 
  flanks 
  of 
  the 
  Motur 
  range, 
  overlapping 
  all 
  the 
  beds 
  of 
  

   the 
  Bijori 
  horizon. 
  The 
  Pachmari 
  sandstone 
  is 
  in 
  its 
  turn 
  altogether 
  

   overlapped 
  in 
  the 
  Moran 
  hills 
  by 
  the 
  Bagra 
  beds, 
  the 
  same 
  overlap 
  

   including 
  the 
  Denwa 
  group 
  and, 
  to 
  an 
  unknown 
  extent, 
  the 
  Bijori 
  

   beds, 
  all 
  having 
  thinned 
  out 
  to 
  the 
  west. 
  In 
  the 
  Sitariva 
  hills, 
  the 
  

   Bagra, 
  and 
  Denwa 
  groups, 
  and 
  probably 
  the 
  Pachmaris, 
  are 
  overlapped 
  

   to 
  the 
  south 
  by 
  the 
  Jabalpur 
  group. 
  

  

  Regarding 
  the 
  longitudinal 
  (east 
  and 
  west) 
  limits 
  of 
  the 
  field 
  

   Several 
  groups 
  limited 
  beneath 
  the 
  trap, 
  we 
  have 
  only 
  the 
  evidence 
  of 
  the 
  

  

  to 
  the 
  actual 
  area. 
  H(J 
  of 
  the 
  groupg 
  witMn 
  th(J 
  fieM 
  . 
  but 
  thig 
  pointg 
  

  

  unequivocally 
  to 
  an 
  approach 
  of 
  limiting 
  conditions, 
  or 
  at 
  least 
  to 
  a 
  

   great 
  contraction 
  and 
  diminished 
  thickness 
  of 
  the 
  deposits. 
  All 
  the 
  

   middle 
  groups 
  of 
  the 
  series 
  — 
  the 
  beds 
  of 
  the 
  Lower 
  Mahadeva 
  and 
  Upper 
  

   Damiida 
  horizons 
  — 
  either 
  die 
  out, 
  or 
  are 
  greatly 
  reduced 
  in 
  thickness 
  

   before 
  reaching 
  the 
  Moran 
  hills 
  ; 
  and 
  there 
  dip 
  westward 
  under 
  the 
  Bagra 
  

   beds, 
  as 
  they 
  do 
  northward 
  along 
  the 
  northern 
  boundary. 
  At 
  the 
  most 
  

   westerly 
  appearance 
  of 
  the 
  sedimentaries, 
  near 
  Lokartalai, 
  sandstones, 
  

   apparently 
  of 
  the 
  Bagra 
  horizon, 
  pass 
  steadily 
  with 
  a 
  westerly 
  dip, 
  or 
  

   rather 
  a 
  flat 
  sloping 
  anticlinal, 
  under 
  the 
  trap. 
  Similar 
  indications 
  

  

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  183 
  ) 
  

  

  