﻿72 
  POOTE 
  : 
  GEOLOGY 
  OP 
  MADRAS. 
  

  

  From 
  the 
  great 
  quantity 
  of 
  the 
  superincumbent 
  lateritic 
  formations 
  

   added 
  to 
  the 
  very 
  jungly 
  surface 
  of 
  the 
  country, 
  the 
  relations 
  of 
  this 
  

   sandstone 
  to 
  the 
  conglomerates 
  forming 
  the 
  mass 
  of 
  the 
  Sattavedu 
  hills 
  

   to 
  the 
  westward 
  could 
  not 
  he 
  traced 
  out, 
  but 
  it 
  may 
  reasonably 
  be 
  re- 
  

   garded 
  as 
  a 
  younger 
  and 
  overlying 
  member 
  of 
  the 
  series. 
  

  

  Eastward 
  of 
  these 
  quarries 
  no 
  outcrop 
  of 
  Kajmahal 
  beds 
  was 
  met 
  

   with 
  anywhere 
  northward 
  of 
  the 
  Narnaveram 
  river. 
  

  

  (b). 
  — 
  The 
  Alicoor 
  area. 
  

  

  The 
  Alicoor 
  area 
  embraces 
  the 
  Alicoor 
  hills, 
  the 
  Naikenpolliam 
  hills,* 
  

   and 
  the 
  small 
  outlying 
  areas 
  of 
  Rajmahal 
  rocks 
  lying 
  north 
  of 
  the 
  

   Naggery 
  river 
  and 
  the 
  Corteliar, 
  and 
  includes 
  deposits 
  belonging 
  to 
  

   both 
  the 
  Sattavedu 
  and 
  Sripermatoor 
  groups. 
  

  

  It 
  has 
  already 
  been 
  mentioned 
  (page 
  66), 
  that 
  the 
  north- 
  

   eastern 
  part 
  of 
  the 
  Alicoor 
  hills 
  is 
  occupied 
  by 
  great 
  conglomerate 
  beds, 
  

   with 
  sandstones 
  belonging 
  to 
  the 
  Sattavedu 
  group, 
  and 
  formerly 
  con- 
  

   tinuous 
  with 
  the 
  beds 
  occurring 
  at 
  the 
  south 
  end 
  of 
  the 
  Sattavedu 
  

   hills. 
  

  

  These 
  conglomerate 
  beds 
  give 
  the 
  hills 
  the 
  peculiar 
  form 
  they 
  

   present 
  when 
  seen 
  from 
  the 
  south, 
  when 
  they 
  resemble 
  a 
  rude 
  saw, 
  the 
  

   steep 
  side 
  of 
  the 
  teeth 
  corresponding 
  with 
  the 
  scarps 
  formed 
  by 
  the 
  out- 
  

   crops 
  of 
  the 
  conglomerate 
  beds 
  which 
  dip 
  towards 
  the 
  east 
  at 
  an 
  angle 
  

   of 
  25°— 
  30°. 
  

  

  Owing 
  to 
  the 
  extraordinary 
  amount 
  of 
  debris 
  covering 
  the 
  flanks 
  of 
  

  

  these 
  hills 
  and 
  the 
  thickness 
  of 
  the 
  scrub 
  jungle, 
  

  

  cong 
  omera 
  es. 
  .^ 
  ^^ 
  found 
  impracticable 
  to 
  ascertain 
  where 
  the 
  

  

  change 
  in 
  the 
  character 
  of 
  these 
  conglomerates 
  from 
  compactly 
  cemented 
  

  

  * 
  The 
  Naikenpolliam 
  hills 
  are 
  really 
  nothing 
  more 
  than 
  the 
  southern 
  part 
  of 
  the 
  

   Alicoor 
  hills, 
  but 
  are 
  by 
  some 
  of 
  the 
  natives 
  dignified 
  with 
  a 
  separate 
  name. 
  

   ( 
  72 
  ) 
  

  

  