﻿94. 
  

  

  FOOTE 
  : 
  GEOLOGY 
  OF 
  MADRAS. 
  

  

  The 
  succession 
  of 
  beds 
  here 
  exposed 
  is 
  — 
  

  

  a. 
  — 
  Laterite 
  and 
  quartzite 
  shingle 
  bed. 
  

   a. 
  — 
  Quartzite 
  shingle 
  enclosed 
  in 
  sand. 
  

   h. 
  — 
  Gritty 
  friable 
  sandstone 
  with 
  shaly 
  and 
  kunkury-layers 
  — 
  the 
  gritty 
  parts 
  

  

  much 
  false-bedded. 
  

   c. 
  — 
  Quartzite 
  -shingle 
  bed 
  enclosed 
  in 
  sandy 
  clay. 
  

   cl. 
  — 
  Friable 
  sandstones 
  with 
  plant 
  remains. 
  (Tmniopteris). 
  

   e. 
  — 
  Coarse-shingle 
  bed 
  — 
  matrix 
  of 
  sandy 
  clay. 
  

  

  f. 
  — 
  Clayey 
  light 
  brown 
  grit 
  with 
  bands 
  of 
  sandstone. 
  (Dictyopteris). 
  

   g. 
  — 
  Boulder-bed. 
  

   N. 
  B. 
  — 
  The 
  fossils 
  were 
  obtained 
  from 
  the 
  corresponding 
  beds 
  on 
  the 
  north 
  bank 
  of 
  

   the 
  river. 
  

  

  The 
  north 
  side 
  of 
  the 
  river 
  shows 
  the 
  same 
  section 
  on 
  a 
  smaller 
  

  

  scale 
  and. 
  much 
  obscured 
  by 
  slips 
  of 
  the 
  overlying 
  1 
  loamy 
  alluvium 
  of 
  the 
  

  

  Naggery 
  river. 
  On 
  the 
  south 
  of 
  the 
  river 
  I 
  got 
  no 
  recognizable 
  plant 
  

  

  remains, 
  but 
  on 
  the 
  northern 
  side 
  I 
  obtained 
  from 
  the 
  bed 
  corresponding 
  1 
  

  

  to 
  cl 
  several 
  specimens, 
  of 
  a 
  small 
  but 
  a 
  broad 
  leaf 
  resembling* 
  Tanio- 
  

  

  pleris, 
  and. 
  from 
  f, 
  fragments 
  of 
  fronds 
  of 
  Dictyopteris 
  and 
  Palceozamia 
  ? 
  

  

  South 
  of 
  Chittapuram, 
  at 
  about 
  a 
  mile 
  distance, 
  are 
  several 
  wells 
  

   belonging 
  to 
  a 
  little 
  hamlet, 
  Gollypully, 
  (not 
  shown 
  in 
  the 
  map,) 
  from 
  

   which 
  a 
  moderately 
  compact 
  conglomerate 
  has 
  been 
  thrown 
  out. 
  This 
  

   conglomerate 
  contains 
  pebbles 
  of 
  quartzite, 
  granite, 
  syenite, 
  (of 
  various 
  

   colors,) 
  pistacite 
  and 
  slate, 
  beside 
  a 
  good 
  deal 
  of 
  white 
  and 
  partly 
  dusty 
  

   kunkur. 
  

  

  At 
  Cavitpooram 
  the 
  same 
  conglomerate 
  reappears 
  in 
  wells 
  sunk 
  in 
  

  

  _ 
  ., 
  ... 
  the 
  hiffh 
  ""round 
  north 
  of 
  the 
  village, 
  and 
  has 
  here 
  

  

  Cavitpooram 
  pebble 
  a 
  » 
  o 
  

  

  beds, 
  been 
  compacted 
  by 
  the 
  infiltration 
  of 
  a 
  small 
  

  

  quantity 
  of 
  calcareous 
  matter, 
  and 
  constitutes 
  a 
  rock 
  of 
  fair 
  consistency, 
  

   which 
  is 
  but 
  rarely 
  the 
  case 
  among 
  the 
  rocks 
  belonging 
  to 
  the 
  Rajmahai 
  

   system 
  lying 
  southward 
  of 
  the 
  Alicoor 
  hills. 
  

  

  Here 
  also 
  fragments 
  of 
  slate 
  are 
  of 
  no 
  uncommon 
  occurrence, 
  the 
  

   commonest 
  colors 
  being 
  purple 
  and 
  greenish 
  -grey. 
  Great 
  heaps 
  of 
  this 
  

   conglomerate 
  may 
  be 
  seen 
  near 
  two 
  large 
  wells 
  lying 
  one 
  quarter 
  of 
  a 
  

   mile 
  north 
  of 
  the 
  village. 
  

  

  ( 
  94 
  ) 
  

  

  