﻿CONJEVERAM 
  GRAVELS. 
  41 
  

  

  and 
  among 
  them 
  chipped 
  implements. 
  The 
  first 
  chipped 
  quartzite 
  

   implement 
  discovered 
  by 
  me 
  in 
  India 
  was 
  found 
  among 
  the 
  material 
  

   turned 
  out 
  of 
  a 
  ballast-pit 
  dug 
  in 
  the 
  laterite 
  gravel 
  a 
  little 
  to 
  the 
  south 
  

   of 
  the 
  Brigade 
  parade-ground 
  between 
  Palaveram 
  and 
  St. 
  Thomas' 
  

   Mount. 
  

  

  (b). 
  — 
  Conjeveram 
  Gravels. 
  

  

  The 
  name 
  of 
  Conjeveram 
  gravels 
  has 
  been 
  proposed 
  by 
  me 
  for 
  

   a 
  series 
  of 
  coarse 
  gravels 
  and 
  shingles, 
  covering 
  a 
  large 
  tract 
  of 
  country 
  

   to 
  the 
  north, 
  north-west, 
  and 
  north-east 
  of 
  the 
  large 
  and 
  well 
  known 
  

   town 
  of 
  Conjeveram. 
  The 
  relations 
  of 
  these 
  shingle 
  beds 
  to 
  the 
  lateritic 
  

   formations 
  which 
  overlie 
  them, 
  as 
  well 
  as 
  to 
  the 
  underlying 
  Rajmahal 
  

   series, 
  are 
  obscure 
  ; 
  and 
  even 
  should 
  it 
  eventually 
  be 
  established 
  beyond 
  

   a 
  doubt 
  that 
  they 
  (the 
  shingles) 
  belong 
  to 
  the 
  lateritic 
  period, 
  yet 
  will 
  

   it 
  be 
  better 
  to 
  distinguish 
  them 
  by 
  some 
  local 
  name 
  on 
  account 
  of 
  their 
  

   great 
  mineral 
  dissimilarity 
  to 
  the 
  typical 
  lateritic 
  formations. 
  

  

  The 
  area 
  occupied 
  by 
  these 
  shingles 
  and 
  associated 
  sandy 
  beds 
  is 
  

   not 
  very 
  sharply 
  defined 
  on 
  the 
  east 
  side. 
  On 
  

  

  Area 
  of 
  distribution. 
  ,i 
  ,i 
  ,-, 
  .-, 
  , 
  ... 
  ,. 
  ,. 
  ,, 
  

  

  the 
  north 
  or 
  south, 
  on 
  the 
  contrary, 
  it 
  is 
  distinctly 
  

  

  bounded 
  by 
  the 
  edge 
  of 
  the 
  old 
  and 
  new 
  Palar 
  and 
  the 
  Vuddagar 
  alluvium, 
  

  

  which 
  meet 
  together 
  about 
  three 
  miles 
  south-south-east 
  of 
  Covrepauk. 
  

  

  The 
  gritty 
  character 
  of 
  these 
  sands, 
  even 
  when 
  very 
  coarse, 
  and 
  the 
  

  

  analogous 
  superposition 
  of 
  the 
  laterite 
  where 
  the 
  two 
  formations 
  are 
  

  

  in 
  juxtaposition, 
  suggest 
  the 
  idea 
  that 
  these 
  gravels 
  and 
  sands 
  might 
  

  

  be 
  stratigraphically 
  equivalents 
  of 
  the 
  gritty 
  sandstones 
  (Cuddalore 
  

  

  sandstones), 
  so 
  largely 
  developed 
  in 
  the 
  Yermootapolliam 
  and 
  Munja- 
  

  

  karinei 
  sections. 
  This 
  view 
  seems 
  favored 
  by 
  the 
  fact 
  that 
  these 
  

  

  Conjeveram 
  gravels 
  lie 
  much 
  nearer 
  to 
  what 
  must 
  have 
  been 
  the 
  old 
  

  

  coast 
  line 
  of 
  the 
  lateritic 
  sea, 
  and, 
  therefore, 
  are 
  necessarily 
  much 
  coarser 
  

  

  than 
  deposits 
  showing 
  a 
  more 
  deep 
  sea 
  character. 
  

  

  e 
  ( 
  41 
  ) 
  

  

  