﻿MEMOIRS 
  

  

  OP 
  THE 
  

  

  GEOLOGICAL 
  SURVEY 
  OF 
  INDIA. 
  

  

  Notes 
  on 
  the 
  Satpura 
  Coal-basin, 
  by 
  H. 
  B. 
  Medlicott, 
  m. 
  a., 
  f. 
  g. 
  s., 
  

  

  Deputy 
  Superintendent, 
  Geological 
  Survey 
  of 
  India. 
  

  

  Section. 
  

  

  Preliminary 
  notice 
  

  

  ... 
  1 
  

  

  Damtida 
  series. 
  

  

  

  

  Jabalpur 
  group 
  

   Mahadeva 
  series. 
  

  

  ... 
  2 
  

  

  „ 
  Upper 
  

  

  f 
  (Bijori 
  horizon).. 
  

   (. 
  (Motur 
  horizon) 
  

  

  6 
  

  

  7 
  

  

  „ 
  Upper 
  (Bagra) 
  

  

  ... 
  3 
  

  

  „ 
  Lower, 
  

  

  Barakar 
  group 
  

  

  8 
  

  

  „ 
  Middle 
  (Denwa) 
  

  

  ... 
  4 
  

  

  Talchir 
  group 
  . 
  

  

  

  9 
  

  

  „ 
  Lower 
  (Pachmari) 
  

  

  ... 
  5 
  

  

  Boundaries 
  

   Deccan 
  trap 
  . 
  

  

  

  10 
  

   11 
  

  

  Practical 
  and 
  sreneral 
  conclusions 
  

  

  12 
  

  

  Section 
  I. 
  — 
  Preliminary 
  Notice. 
  

  

  The 
  commencement 
  of 
  the 
  detailed 
  Geological 
  survey 
  of 
  the 
  Nar- 
  

   bada, 
  or 
  Satpura, 
  coal-basin, 
  in 
  connection 
  with 
  which 
  it 
  has 
  been 
  

   necessary 
  to 
  examine 
  some 
  principal 
  sections 
  of 
  the 
  whole 
  area, 
  has 
  

   suggested 
  some 
  views 
  upon 
  the 
  general 
  structure 
  of 
  the 
  rocks, 
  the 
  dis- 
  

   cussion 
  of 
  which 
  is 
  an 
  essential 
  preliminary 
  to 
  the 
  prosecution 
  of 
  the 
  

   work. 
  Since 
  the 
  publication 
  of 
  the 
  sketch-map 
  of 
  this 
  ground, 
  fourteen 
  

   years 
  ago, 
  the 
  wide 
  experience 
  gained 
  in 
  the 
  uninterrupted 
  examination 
  

   in 
  other 
  parts 
  of 
  India 
  of 
  the 
  great 
  rock-series 
  to 
  which 
  the 
  coal-mea- 
  

   sures 
  belong 
  has, 
  of 
  course, 
  largely 
  contributed 
  to 
  a 
  better 
  understand- 
  

   ing 
  of 
  the 
  rocks 
  here. 
  Even 
  when 
  the 
  former 
  work 
  was 
  done 
  sub- 
  

   divisions 
  were 
  known 
  to 
  exist, 
  and 
  were 
  mentioned 
  in 
  the 
  report, 
  but 
  

   which 
  it 
  was 
  not 
  possible 
  to 
  separate 
  upon 
  the 
  very 
  imperfect 
  map 
  then 
  

   available 
  ; 
  and 
  since 
  then, 
  new 
  groups 
  have 
  been 
  described 
  in 
  other 
  

  

  (133 
  ) 
  

  

  Memoirs, 
  Geological 
  Survey 
  of 
  India, 
  Vol. 
  X, 
  Art. 
  2. 
  

  

  