﻿102 
  FOOTE 
  : 
  GEOLOGY 
  OF 
  MADRAS. 
  

  

  The 
  plant 
  shales 
  in 
  this 
  section 
  yielded 
  a 
  good 
  number 
  of 
  specimens, 
  

   in 
  fair 
  preservation, 
  of 
  Palaozamia, 
  (of 
  two 
  or 
  three 
  species) 
  . 
  

  

  The 
  shale 
  is 
  compact, 
  very 
  pure, 
  and 
  of 
  white 
  color, 
  resting 
  on 
  the 
  

   gritty 
  sandstones 
  No. 
  5. 
  Near 
  the 
  southern 
  end 
  of 
  the 
  section 
  were 
  some 
  

   boulders 
  of 
  a 
  very 
  similar 
  grit 
  containing 
  numerous 
  marine 
  shells 
  fossil. 
  

   These, 
  as 
  already 
  stated 
  (page 
  61), 
  belong 
  more 
  probably 
  to 
  the 
  creta- 
  

   ceous 
  era, 
  and 
  have, 
  therefore, 
  been 
  described 
  in 
  Chapter 
  VII. 
  These 
  

   boulders 
  were 
  at 
  first 
  thought 
  to 
  belong 
  to 
  the 
  underlying 
  grits, 
  on 
  

   the 
  ground 
  of 
  their 
  strong 
  lithological 
  resemblance, 
  but 
  the 
  examination 
  

   of 
  the 
  fossils 
  showed 
  their 
  non-Rajmahal 
  character, 
  and 
  excavations 
  

   clearly 
  proved 
  the 
  boulders 
  to 
  have 
  no 
  connection 
  with 
  the 
  grit 
  bed 
  

   No. 
  5, 
  which 
  is 
  completely 
  unfossiliferous. 
  Both 
  grits 
  are 
  made 
  up 
  of 
  

   debris 
  of 
  granitic 
  rocks. 
  

  

  The 
  grit 
  beds 
  are 
  again 
  seen 
  in 
  the 
  off-flow 
  channel 
  below 
  the 
  

   south 
  kalingula 
  of 
  the 
  Sripermatoor 
  tank, 
  but 
  the 
  shales 
  have 
  been 
  

   denuded 
  away 
  from 
  them 
  just 
  there. 
  

  

  The 
  shales 
  are 
  seen 
  in 
  the 
  bed 
  of 
  the 
  great 
  tank 
  when 
  dry, 
  and 
  

  

  again 
  at 
  the 
  northern 
  end, 
  where 
  they 
  rest 
  upon 
  

   Sections 
  in 
  and 
  at 
  

  

  north 
  end 
  of 
  Sriperaa- 
  a 
  bed 
  of 
  white 
  grit. 
  The 
  shales 
  are 
  much 
  dis- 
  

   turbed 
  at 
  this 
  place, 
  apparently 
  by 
  some 
  lateral 
  

   pressure, 
  which 
  has 
  also 
  affected 
  the 
  grit 
  bed 
  beneath. 
  A 
  few 
  yards 
  

   to 
  the 
  west 
  of 
  the 
  small 
  channel 
  above 
  the 
  Kalingula, 
  a 
  part 
  of 
  the 
  

   grit 
  bed, 
  aJbout 
  40 
  feet 
  long 
  and 
  from 
  1| 
  to 
  2 
  feet 
  thick, 
  has 
  been 
  pushed 
  

   up 
  into 
  a 
  vertical 
  position 
  and 
  protrudes 
  above 
  the 
  surface 
  like 
  a 
  small 
  

   dyke. 
  The 
  general 
  dip 
  of 
  the 
  beds 
  is 
  east-north-east 
  at 
  a 
  low 
  angle. 
  

  

  A 
  little 
  outcrop 
  of 
  the 
  shales 
  occurs 
  in 
  a 
  small 
  new 
  well 
  about 
  

   200 
  yards 
  south-west, 
  whence 
  several 
  fossils 
  were 
  obtained, 
  chiefly 
  

   Palaozamice 
  and 
  parts 
  of 
  fronds 
  of 
  a 
  coniferous 
  tree 
  allied 
  to 
  Taxodites 
  ? 
  

  

  These 
  shales 
  are 
  more 
  compact 
  than 
  those 
  at 
  Sripermatoor 
  bungalow. 
  

   They 
  are 
  much 
  cut 
  up 
  by 
  shrinkage 
  joints 
  into 
  oblong 
  or 
  rudely 
  

   ( 
  102 
  ) 
  

  

  