﻿JURASSIC 
  ROCKS 
  : 
  PYANOOR 
  AREA. 
  99 
  

  

  of 
  Moshoor 
  village 
  resting 
  on 
  the 
  decayed 
  gneiss, 
  but 
  the 
  well 
  being 
  full 
  

   to 
  overflowing 
  at 
  the 
  time 
  of 
  examination 
  this 
  could 
  not 
  be 
  positively- 
  

   verified. 
  These 
  rounded 
  blocks 
  or 
  boulders, 
  many 
  of 
  which 
  must 
  be 
  

   nearly 
  a 
  ton 
  in 
  weight, 
  appear 
  to 
  be 
  derived 
  from 
  the 
  underlying 
  pistacite 
  

  

  gneiss, 
  and 
  to 
  have 
  been 
  formed 
  by 
  the 
  action 
  of 
  

   Moshoor 
  section. 
  . 
  , 
  

  

  surf 
  on 
  the 
  ancient 
  gneiss 
  shore. 
  Pebbly 
  sand- 
  

  

  stone 
  beds 
  belonging 
  to 
  the 
  Sripermatoor 
  group 
  may 
  be 
  seen 
  in 
  a 
  well 
  

   section 
  south-east 
  of 
  Moshoor 
  on 
  the 
  high 
  ground 
  beyond 
  the 
  nullah 
  flow- 
  

   ing 
  out 
  of 
  the 
  Sripermatoor 
  tank 
  ; 
  these 
  beds 
  from 
  their 
  position 
  were 
  

   evidently 
  once 
  continuous 
  with 
  others 
  which 
  have 
  been 
  denuded 
  from 
  off 
  

   the 
  Moshoor 
  gneiss. 
  The 
  section 
  in 
  the 
  well 
  (which 
  is 
  close 
  to 
  an 
  old 
  

   indigo 
  vat) 
  shows 
  the 
  following 
  strata 
  : 
  — 
  

  

  Ft. 
  In. 
  Ft. 
  In. 
  

   Reddish 
  loam 
  ... 
  ... 
  ... 
  ... 
  ... 
  3 
  

  

  Coarse 
  later 
  itic 
  gravel 
  ... 
  ... 
  ... 
  ... 
  1 
  to 
  1 
  4 
  

  

  Gritty 
  pehhle 
  beds 
  with 
  shaly 
  partings 
  alternating 
  ... 
  9 
  to 
  10 
  

  

  Sandstone 
  conglomerate 
  with 
  some 
  strings 
  of 
  quartzite 
  

  

  ... 
  2 
  

  

  15 
  to 
  11 
  4 
  

  

  The 
  direction 
  of 
  the 
  dip 
  of 
  the 
  beds 
  is 
  about 
  16° 
  south 
  of 
  east. 
  

  

  Between 
  this 
  well 
  section 
  and 
  the 
  high 
  ground 
  near 
  Catramatoor 
  

   great 
  boulders 
  of 
  granite 
  appear 
  on 
  the 
  surface 
  protruding 
  through 
  the 
  

   lateritic 
  gravel, 
  some 
  of 
  such 
  size 
  as 
  to 
  suggest 
  the 
  idea 
  of 
  their 
  being 
  

   surf 
  worn 
  pinnacles 
  of 
  the 
  underlying 
  granitic 
  rock. 
  Similar 
  masses 
  

   appear 
  in 
  various 
  places 
  along 
  the 
  junction 
  of 
  the 
  highly 
  granitoid 
  

   gneissic 
  rock 
  with 
  the 
  Rajmahal 
  formations 
  southward 
  towards 
  Tukkolum. 
  

   Near 
  Tukkolum 
  the 
  rock 
  is 
  a 
  granite, 
  or 
  highly 
  altered 
  quartzo- 
  

   felspathic 
  micaceous 
  gneiss, 
  of 
  rather 
  coarse 
  grain. 
  Many 
  of 
  the 
  

   isolated 
  blocks 
  have 
  been 
  used 
  to 
  form 
  ' 
  Kurumbar 
  rings', 
  a 
  consider- 
  

   able 
  number 
  of 
  which 
  occur 
  on 
  the 
  north 
  bank 
  of 
  the 
  Corteliar. 
  

  

  Two 
  boulder-beds 
  have 
  been 
  met 
  with 
  south 
  of 
  the 
  Corteliar 
  and 
  

   will 
  be 
  described 
  further 
  on, 
  but 
  there 
  is 
  generally 
  a 
  well 
  marked 
  decrease 
  

  

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  99 
  ) 
  

  

  