﻿Archcean 
  Rocks 
  from 
  the 
  Mysore 
  State. 
  

  

  213 
  

  

  Serial 
  

   No. 
  

  

  Registered 
  

   No. 
  

  

  Description. 
  

  

  Radium 
  

  

  Remarks. 
  

  

  Group 
  2. 
  Dharwar 
  System 
  — 
  Upper 
  (Chloritic) 
  series. 
  

  

  19. 
  

   20. 
  

  

  21. 
  

  

  Z3/258 
  Santaveri 
  trap, 
  Bababudan 
  

  

  Hills. 
  

   Z4/757 
  Banded 
  chlorite 
  schist, 
  Sacre- 
  

  

  bail, 
  Shimoga. 
  

   Z4/703 
  Calc-chlorite 
  trap, 
  Tarikere 
  

  

  series. 
  

  

  0-20 
  

   0-27 
  

  

  0-54 
  

  

  Chloritic 
  trap, 
  with 
  some 
  

   hornblende. 
  

  

  Probably 
  altered 
  horn- 
  

   blendic 
  trap. 
  

  

  Grroup 
  3. 
  Intrusives 
  of. 
  Dharwar 
  age 
  — 
  subsequent 
  to 
  the 
  schists. 
  

  

  24. 
  

   25. 
  

  

  26. 
  

   27. 
  

  

  28. 
  

  

  29. 
  

  

  30. 
  

   31. 
  

  

  Baba- 
  

  

  016 
  

  

  • 
  Dis- 
  

  

  0-05 
  

  

  { 
  Dis- 
  

  

  0-07 
  

  

  T 
  brani, 
  

  

  0-05 
  

  

  22. 
  j 
  S2/943 
  Hornblende 
  diabase, 
  

   budan 
  Hills. 
  

  

  23. 
  W3/69 
  Bella 
  ra 
  trap, 
  Tumkur 
  

   trict. 
  

  

  Z4/95 
  Grey 
  trap, 
  Chitaldrug 
  

  

  trict. 
  

   J4/117 
  Titaniferous 
  iron 
  ore, 
  Ubrani, 
  

   Shimoga. 
  

  

  Group 
  4. 
  Champion 
  Gneiss 
  Series— 
  

   Jl/335 
  Grey 
  micro 
  granite, 
  Kolar. 
  

   Jl/156 
  Fine 
  micaceous 
  granite-ma- 
  

   Irix 
  of 
  crush 
  conglomerate, 
  

   Kolar 
  Gold 
  Field. 
  

   S3/313 
  Fine 
  mica 
  granite, 
  Mysore 
  

   Mine 
  at 
  depth 
  of 
  3000 
  ft. 
  

   .Auriferous 
  quartz 
  from 
  the 
  

   Mysore 
  Mine. 
  

   A/624 
  Quartz-felspar 
  porphyry. 
  

   S/402 
  Massive 
  phyrrhotite 
  from 
  

   Champion 
  Reef 
  Mine 
  

  

  Group 
  5. 
  Peninsular 
  Gneiss 
  Series 
  — 
  later 
  than 
  Champion 
  Gneiss 
  

  

  Altered 
  diabase 
  intrusive 
  

   into 
  chloritic 
  series. 
  

  

  Chloritic 
  trap, 
  probably 
  

   related 
  to 
  Bellara 
  trap. 
  

  

  Associated 
  with 
  ultra- 
  

   basic 
  intrusives. 
  

  

  intrusive 
  into 
  Dharwars. 
  

   0.85 
  

   1-45 
  

  

  1-34 
  

  

  1-28 
  

  

  1-05 
  

  

  007 
  

  

  These 
  are 
  considered 
  to 
  be 
  

   products 
  of 
  the 
  Cham- 
  

   pion 
  gneiss 
  magma. 
  

  

  From 
  Gifford's 
  shaft. 
  

  

  32. 
  

  

  33. 
  

   34. 
  

   35. 
  

  

  36. 
  

  

  37. 
  

  

  38. 
  

   39. 
  

  

  J3/238 
  Dark 
  porphyritic 
  granite, 
  

  

  ; 
  Kolar. 
  

   J3/278 
  Dark 
  grey 
  granite, 
  Kolar. 
  

   J3/212 
  Fine 
  dark 
  grey 
  granite, 
  Kolar. 
  

   J3/276 
  Fine 
  light 
  grey 
  granite, 
  

  

  Kolar. 
  

   J3/63 
  Light 
  crushed 
  granite, 
  east 
  of 
  

  

  Koiar 
  Field. 
  

   J3/122 
  Uniform 
  granite 
  mass, 
  Patna, 
  

  

  Kolar. 
  

  

  S/326 
  ; 
  Pegmatite 
  cross-course, 
  Bala- 
  

  

  ghat 
  Mine. 
  

   S/354 
  Pegmatite 
  cross-course, 
  with 
  

   1 
  tourmaline, 
  Ooregum 
  Mine. 
  

  

  0-91 
  ^ 
  

  

  0-99 
  )■ 
  

   1-28 
  | 
  

  

  0-47; 
  

  

  0-40 
  

   1-50 
  

  

  1-44 
  

  

  6-90 
  

  

  J 
  

  

  These 
  are 
  in 
  order 
  of 
  in- 
  

   trusion, 
  beginning 
  with 
  

   the 
  oldest. 
  

  

  These 
  probably 
  belong 
  to 
  

   the 
  Peninsular 
  gneiss. 
  

  

  In 
  No. 
  39 
  the 
  tourma- 
  

   line 
  itself 
  is 
  not 
  abnor- 
  

   mally 
  high 
  in 
  radium. 
  

  

  Group 
  6. 
  Charnockite 
  Series 
  — 
  later 
  than 
  the 
  Peninsular 
  Gneiss. 
  

  

  40. 
  

   41. 
  

  

  42. 
  

  

  43. 
  

   44. 
  

  

  J2/824 
  

   J2/822 
  

  

  J2/722 
  

  

  J3/631 
  

   J3/713 
  

  

  Acid 
  Charnockite, 
  Chamraj- 
  

   nagar, 
  Mysore 
  District. 
  

  

  Intermediate 
  Charnockite, 
  

   Chamrajnagar, 
  Mysore 
  Dis- 
  

   trict. 
  

  

  Basic 
  Charnockite, 
  Heggad- 
  

   devankotte, 
  Mysore 
  Dis- 
  

   trict. 
  

  

  Hyper.-thenite, 
  Nanjaugud. 
  

  

  Quartz-magnetite 
  ore, 
  Heg- 
  

   gaddevankotte. 
  

  

  0-04} 
  

   010 
  

  

  0-12 
  

  

  006 
  

  

  0-08 
  

  

  Order 
  of 
  intrusion 
  doubt- 
  

   ful. 
  

  

  These 
  are 
  considered 
  to 
  be 
  

   derived 
  from 
  the 
  Char- 
  

   nockite 
  magma. 
  

  

  