﻿88 
  K>OTE 
  : 
  GEOLOGY 
  OP 
  MADRAS. 
  

  

  Moderately 
  compact, 
  grey, 
  gritty 
  sandstone 
  with 
  numerous 
  quart- 
  

  

  _, 
  .. 
  , 
  , 
  D 
  zite 
  pebbles 
  has 
  been 
  turned 
  out 
  of 
  a 
  well 
  duff 
  a 
  

  

  Fossil 
  wood 
  at 
  Raman* 
  r 
  => 
  

  

  J 
  eri 
  - 
  little 
  to 
  the 
  west 
  of 
  Ramanjeri. 
  This 
  stone 
  con- 
  

  

  tains 
  numerous 
  small 
  white 
  layers 
  of 
  chips 
  of 
  silicified 
  (?) 
  exogenous 
  

   wood, 
  and 
  occasionally 
  small 
  pieces 
  of 
  trunks 
  or 
  large 
  branches 
  showing 
  

   the 
  rings 
  of 
  growth 
  very 
  distinctly. 
  Not 
  a 
  trace 
  of 
  a 
  recognizable 
  leaf 
  

   was 
  noticed 
  among 
  the 
  layers 
  of 
  chips, 
  though 
  very 
  carefully 
  sought 
  for. 
  

  

  The 
  valley 
  lying 
  east 
  of 
  the 
  Conjibuddy 
  laterite 
  ridge, 
  and 
  spread- 
  

   ing 
  into 
  a 
  broad 
  alluvial 
  flat 
  near 
  the 
  junction 
  of 
  the 
  Naggery 
  river 
  and 
  

   the 
  Corteliar 
  at 
  Kistnapooram, 
  presents 
  no 
  sections 
  whatever 
  but 
  such 
  

   as 
  have 
  been 
  formed 
  by 
  digging 
  wells. 
  In 
  the 
  lower 
  parts 
  of 
  the 
  valley 
  

   I 
  found 
  these 
  quite 
  full 
  of 
  water, 
  and 
  had 
  only 
  the 
  turned 
  out 
  material 
  

  

  Sections 
  at 
  Motapol- 
  to 
  look 
  to 
  for 
  ^formation 
  as 
  to 
  the 
  underlying 
  

   liam- 
  beds 
  ; 
  but 
  north-east 
  of 
  Motapolliam 
  (the 
  village 
  

  

  lying 
  west 
  of 
  the 
  large 
  tank 
  shown 
  in 
  the 
  map), 
  where 
  the 
  ground 
  

   begins 
  to 
  rise 
  rapidly, 
  and 
  the 
  water 
  stands 
  at 
  a 
  much 
  lower 
  level 
  in 
  the 
  

   well, 
  some 
  useful 
  sections 
  were 
  found. 
  

  

  The 
  materials 
  thrown 
  out 
  of 
  the 
  Toombul 
  tank 
  on 
  to 
  the 
  bund 
  

   consist 
  of 
  the 
  friable 
  brown 
  grit, 
  enclosing 
  quart- 
  

   zite 
  and 
  granitic 
  (decayed) 
  pebbles. 
  

  

  Friable, 
  buff-brown 
  sandstone 
  has 
  been 
  turned 
  up 
  in 
  digging 
  a 
  

   well 
  about 
  three 
  quarters 
  of 
  a 
  mile 
  north-north-west 
  of 
  Toombul, 
  and 
  in 
  

   this 
  I 
  found 
  two 
  or 
  three 
  unrecognizable 
  vegetable 
  impressions. 
  These 
  

   beds 
  probably 
  agree 
  in 
  position 
  with 
  the 
  pebbly 
  sandstone 
  at 
  Ramanjeri 
  

  

  and 
  Conjibuddy 
  in 
  the 
  Conjibuddy 
  valley, 
  and 
  they 
  

  

  Motapolliam 
  sections. 
  n 
  . 
  , 
  , 
  - 
  , 
  ., 
  

  

  are 
  covered 
  by 
  a 
  coarse 
  conglomerate 
  ot 
  quartzite 
  

  

  and 
  decaying 
  granite 
  shingle 
  in 
  a 
  gritty 
  loose 
  matrix. 
  The 
  conglomerate 
  

   is 
  exposed 
  in 
  many 
  wells 
  north 
  of 
  Motapolliam, 
  lying 
  rather 
  higher 
  

   than 
  the 
  village 
  itself. 
  Following 
  the 
  gradual 
  rise 
  of 
  the 
  ground 
  north- 
  

   east 
  of 
  Motapolliam 
  from 
  a 
  large 
  well 
  in 
  which 
  this 
  conglomerate 
  

   . 
  ( 
  88 
  ) 
  

  

  