﻿JURASSIC 
  ROCKS 
  : 
  SR1PERMATOOR 
  AREA. 
  103 
  

  

  prismatic 
  pieces. 
  Some 
  thin 
  layers 
  of 
  pale-buff 
  color 
  are 
  almost 
  

   porcellanic 
  in 
  texture, 
  a 
  character 
  met 
  with 
  in 
  several 
  other 
  places 
  to 
  be 
  

   mentioned 
  further 
  on. 
  The 
  fossils 
  in 
  this 
  porcellanic 
  shale 
  are 
  generally 
  

   the 
  best 
  preserved, 
  but 
  more 
  difficult 
  to 
  obtain 
  than 
  in 
  the 
  less 
  indurated 
  

   shales, 
  as 
  there 
  is 
  often 
  a 
  tendency 
  to 
  conchoidal 
  fracture 
  irrespective 
  

   of 
  the 
  planes 
  of 
  lamination. 
  

  

  A 
  tiny 
  outcrop 
  of 
  shales, 
  the 
  most 
  northerly 
  in 
  the 
  Sripermatoor 
  

   basin, 
  occurs 
  in 
  a 
  little 
  shallow 
  gully 
  close 
  to 
  Todukadu. 
  The 
  shales 
  

   are 
  less 
  compact 
  than 
  those 
  at 
  the 
  north 
  kalingula, 
  and, 
  like 
  those 
  

   in 
  the 
  section 
  west 
  of 
  the 
  bungalow, 
  thin 
  bedded. 
  A 
  small 
  fragment 
  

   of 
  a 
  Dictgqpteris 
  frond, 
  beautifully 
  preserved 
  however, 
  and 
  showing 
  the 
  

   venation 
  very 
  distinctly, 
  was 
  the 
  only 
  fossil 
  found 
  here. 
  

  

  The 
  only 
  other 
  two 
  sections 
  in 
  which 
  the 
  grits 
  underlying 
  the 
  

   plant 
  shales 
  were 
  observed 
  in 
  contact 
  with 
  the 
  shales 
  occur 
  south 
  of 
  

   the 
  Sripermatoor 
  sections 
  and 
  between 
  them 
  and 
  the 
  Vellakottei 
  section 
  

   before 
  described 
  (page 
  97). 
  

  

  The 
  first 
  of 
  these 
  two 
  sections 
  occurs 
  at 
  Araneri, 
  three 
  miles 
  south- 
  

   south-west 
  of 
  the 
  bungalow 
  section, 
  and 
  shows 
  

   Araneri 
  section. 
  

  

  the 
  shales 
  resting 
  on 
  whitish, 
  friable 
  grits 
  which 
  

  

  are 
  obscurely 
  bedded. 
  The 
  overlying 
  shales 
  dip 
  10°— 
  15° 
  south-east 
  by 
  

   east. 
  No 
  fossils 
  were 
  obtained 
  in 
  these 
  beds. 
  

  

  The 
  second 
  section 
  showing 
  the 
  shales 
  and 
  grits 
  in 
  contact 
  occurs 
  

  

  at 
  the 
  south 
  end 
  of 
  the 
  large 
  tank 
  at 
  Vellum. 
  

   Vellum 
  section. 
  

  

  The 
  grits, 
  which 
  are 
  of 
  white 
  color, 
  are 
  seen 
  in 
  a 
  

  

  rain-gully 
  opening 
  into 
  the 
  south 
  end 
  of 
  the 
  tank, 
  and 
  in 
  the 
  dry 
  season 
  

  

  in 
  the 
  bed 
  of 
  the 
  latter. 
  Resting 
  on 
  the 
  surface 
  of 
  the 
  grits 
  is 
  a 
  small 
  

  

  bed 
  of 
  gritty 
  shales, 
  closely 
  resembling 
  in 
  lithologicai 
  character 
  bed 
  

  

  No. 
  4 
  of 
  the 
  Vellakottei 
  section. 
  The 
  plant 
  shales 
  do 
  not 
  show 
  in 
  

  

  contact, 
  but 
  occur 
  only 
  a 
  few 
  yards 
  off 
  on 
  the 
  surface, 
  having 
  been 
  

  

  scratched 
  up 
  in 
  large 
  quantities 
  during 
  the 
  ploughing 
  of 
  the 
  fields. 
  The 
  

  

  ( 
  103 
  ) 
  

  

  