﻿Ft. 
  

  

  In. 
  

  

  Ft, 
  

  

  In 
  

  

  2 
  

  

  Oto 
  

  

  2 
  

  

  4 
  

  

  2 
  

  

  to 
  

  

  4 
  

  

  

  

  

  

  to 
  

  

  3 
  

  

  

  

  1 
  

  

  Oto 
  

  

  1 
  

  

  2 
  

  

  2 
  

  

  Oto 
  

  

  3 
  

  

  

  

  1 
  

  

  2 
  to 
  

  

  1 
  

  

  4 
  

  

  1 
  

  

  3 
  to 
  

  

  1 
  

  

  6 
  

  

  2 
  

  

  Oto 
  

  

  3 
  

  

  

  

  110 
  FOOTE 
  : 
  GEOLOGY 
  OF 
  MADRAS. 
  

  

  6. 
  Sandy 
  clay, 
  white 
  and 
  'pale-buff 
  in 
  color, 
  with 
  plant 
  remains, 
  

  

  rather 
  friable 
  

  

  7. 
  Purple 
  and 
  buff 
  shaley 
  sandstones, 
  with 
  clayey 
  partings 
  

  

  8. 
  Sandy 
  shale 
  (local) 
  

  

  9. 
  White 
  clay 
  ... 
  

  

  10. 
  Shaley 
  sandstone, 
  purple 
  at 
  the 
  top, 
  buff 
  below 
  ... 
  

  

  11. 
  White 
  clay 
  ... 
  

  

  12. 
  Thin-bedded 
  buff 
  sandstones, 
  more 
  gritty 
  and 
  purple 
  at 
  top 
  

   , 
  13. 
  Friable 
  whitish 
  sandy 
  shale 
  base 
  

  

  The 
  general 
  dip 
  of 
  these 
  beds 
  varies 
  within 
  the 
  exposed 
  area 
  from 
  

   about 
  5° 
  east 
  to 
  7° 
  east-south-east, 
  with 
  occasional 
  small 
  rolls 
  to 
  the 
  

   north 
  and 
  south, 
  which 
  take 
  away 
  from 
  the 
  clearness 
  of 
  the 
  section. 
  

   The 
  sandy-white 
  and 
  pale-buff 
  clay 
  bed 
  (No. 
  6) 
  contains 
  numerous 
  

   vegetable 
  impressions, 
  well 
  preserved, 
  but 
  easily 
  effaced 
  owing 
  to 
  the 
  very 
  

   friable 
  nature 
  of 
  the 
  matrix. 
  Specimens 
  of 
  two 
  (and 
  probably 
  more) 
  

   varieties 
  of 
  Palaozamia 
  and 
  of 
  Stangerites 
  show 
  the 
  true 
  Hajmahal 
  

   character 
  of 
  this 
  series. 
  

  

  To 
  the 
  north 
  these 
  beds 
  are 
  no 
  doubt 
  continuously 
  developed 
  as 
  far 
  

   as 
  the 
  steep 
  slope 
  northward 
  of 
  the 
  laterite 
  plateau 
  running 
  westward 
  

   from 
  Vippoor 
  to 
  Mettapaluyam 
  (Motopullum 
  of 
  map) 
  , 
  and 
  here 
  they 
  

   appear 
  to 
  have 
  been 
  cut 
  off 
  by 
  denudation. 
  

  

  Where 
  the 
  old 
  Wallajabad-Madras 
  road 
  crosses 
  the 
  bund 
  of 
  the 
  

   tank 
  south 
  of 
  Vippur, 
  a 
  bed 
  of 
  brownish-yellow 
  

   shaley 
  clay 
  crops 
  out 
  through 
  the 
  laterite 
  gravel 
  

   talus, 
  but 
  is 
  exposed 
  only 
  for 
  a 
  few 
  yards 
  along 
  a 
  tank. 
  This 
  yellow 
  clay 
  

   yielded, 
  amongst 
  other 
  not 
  very 
  characteristic 
  vegetable 
  remains, 
  part 
  of 
  

   a 
  frond 
  of 
  a 
  small 
  species 
  of 
  Tterophjllum, 
  in 
  very 
  good 
  preservation, 
  

   and 
  strikingly 
  like 
  some 
  of 
  the 
  typical 
  Rajmahal 
  specimens. 
  

  

  The 
  absence 
  of 
  a 
  good 
  section 
  anywhere 
  along 
  the 
  line 
  of 
  water- 
  

   shed 
  north 
  of 
  the 
  old 
  high 
  road 
  renders 
  it 
  impossible 
  to 
  correlate 
  exactly 
  

   the 
  Vautumbaucum 
  series 
  of 
  sandstones 
  and 
  clays 
  with 
  the 
  Vella- 
  

  

  ( 
  H° 
  ) 
  

  

  