﻿44 
  MEDLICOTT 
  : 
  SATPURA 
  COAL-BASIN. 
  

  

  of 
  metamorphic 
  rocks 
  at 
  which 
  the 
  deposits 
  stopped, 
  and 
  against 
  ^hich 
  

   they 
  were 
  crushed 
  at 
  the 
  time 
  of 
  the 
  main 
  disturbance, 
  the 
  said 
  rocks 
  

   being 
  subsequently 
  removed 
  by 
  denudation, 
  or 
  let 
  down 
  by 
  a 
  fault 
  — 
  

   would 
  exclude 
  the 
  consideration 
  of 
  northern 
  outliers 
  of 
  the 
  coal-rocks. 
  

   -The 
  special 
  lithological 
  evidence 
  in 
  support 
  of 
  this 
  latter 
  position, 
  as 
  

   noticed 
  in 
  the 
  blank 
  section 
  of 
  the 
  Sitariva 
  region, 
  is 
  found 
  also 
  in 
  the 
  

   Moran 
  hills 
  — 
  coarse 
  conglomerates 
  are 
  frequent 
  in 
  the 
  scarp 
  : 
  and 
  this 
  fact 
  

   is 
  too. 
  weighty 
  to 
  be 
  altogether 
  set 
  aside. 
  There 
  are 
  great 
  difficulties 
  in 
  

   the 
  way 
  of 
  the 
  supposition 
  that 
  the 
  whole 
  area 
  of 
  the 
  Narbada 
  valley 
  was 
  

   occupied 
  by 
  a 
  continuous 
  upland 
  of 
  metamorphics 
  ; 
  but 
  it 
  is 
  almost 
  neces- 
  

   sary 
  to 
  suppose 
  that 
  there 
  were 
  extensive 
  patches 
  of 
  these 
  rocks, 
  between 
  

   which 
  the 
  coal- 
  series 
  would 
  of 
  course 
  have 
  extended; 
  and 
  the 
  remnants 
  

   of 
  such 
  prolongations 
  may 
  still 
  be 
  looked 
  for 
  under 
  the 
  alluvium 
  of 
  the 
  

   valley. 
  

  

  Under 
  the 
  uncertainty 
  to 
  what 
  extent 
  the 
  disturbance 
  of 
  compres- 
  

  

  No 
  decided 
  inference 
  sion 
  aloB 
  £ 
  the 
  boundary 
  ma 
  7 
  have 
  been 
  P 
  ost 
  " 
  

   can 
  be 
  drawn 
  upon 
  the 
  trappean 
  (for 
  it 
  may 
  have 
  had 
  little 
  or 
  no 
  effect 
  

  

  nature 
  of 
  the 
  northern 
  rr 
  \ 
  j 
  

  

  boundary. 
  upon 
  the 
  trap 
  itself) 
  one 
  cannot 
  lay 
  much 
  stress. 
  

  

  upon 
  that 
  feature 
  in 
  arguing 
  upon 
  the 
  relation 
  of 
  the 
  actual 
  to 
  the 
  

   original 
  boundary, 
  or 
  to 
  a 
  supposed 
  fault, 
  and 
  so 
  draw 
  any 
  decided 
  pre- 
  

   ference 
  in 
  favor 
  of 
  auy 
  one 
  of 
  the 
  suppositions 
  here 
  discussed. 
  They 
  

   all, 
  however, 
  seem 
  much 
  more 
  likely 
  than 
  the 
  only 
  remaining 
  supposi- 
  

   tion, 
  that 
  of 
  a 
  fault 
  with 
  an 
  upthrow 
  on 
  the 
  north. 
  Whatever 
  positive 
  

   evidence 
  exists 
  is 
  adverse 
  to 
  this 
  view 
  ; 
  and 
  it 
  would 
  immensely 
  increase 
  

   the 
  difficulty 
  of 
  accounting 
  for 
  the 
  actual 
  configuration 
  of 
  the 
  ground 
  — 
  

   the 
  presence 
  of 
  the 
  Narbada 
  valley 
  in 
  what 
  would 
  thus 
  be 
  an 
  area 
  of 
  

   upheaval. 
  

  

  There 
  is 
  little 
  to 
  be 
  said 
  at 
  present 
  upon 
  the 
  southern 
  boundary 
  of 
  

  

  „ 
  , 
  , 
  , 
  , 
  ., 
  the 
  Satpura 
  basin. 
  As 
  seen 
  in 
  the 
  deeply 
  denuded 
  

   South 
  boundary 
  of 
  the 
  x 
  L 
  J 
  

  

  Satpura 
  basin. 
  area 
  f 
  the 
  upper 
  Tawa 
  valley, 
  the 
  very 
  tortuous 
  

  

  outline 
  of 
  the 
  boundary 
  manifestly 
  suggests 
  an 
  original 
  line 
  of 
  deposition. 
  

   ( 
  176 
  ) 
  

  

  