﻿NUMMULITIC 
  OTl 
  EOCENE 
  GKOUP. 
  

  

  103 
  

  

  Brought 
  forward 
  . 
  . 
  

   Hard 
  blue 
  sandstone 
  

  

  Shale 
  and 
  sandstones, 
  former 
  predominant 
  

   Hard 
  blue 
  sandstone 
  

  

  Shales 
  and 
  sandstones, 
  latter 
  thin, 
  former 
  predominant 
  

   Blue 
  friable 
  shale 
  with 
  harsh 
  blue 
  and 
  grey 
  sandstone 
  

   Blue 
  shale 
  with 
  sandstone 
  courses 
  

  

  Blue 
  and 
  grey 
  harsh 
  sandstone 
  and 
  shales, 
  former 
  predominant 
  

   Blue 
  and 
  yellow 
  shales, 
  with 
  hard 
  sandstone 
  courses, 
  in 
  regular 
  

  

  beds, 
  one 
  to 
  four 
  inches 
  

   Pale 
  bluish 
  gray 
  sandstone 
  

   Blue 
  and 
  yellow 
  shales 
  as 
  above 
  

   Yellow 
  shale, 
  with 
  hard 
  blue 
  sandstone 
  courses 
  ... 
  

   Shaly 
  beds 
  (ill 
  seen) 
  

   Blue 
  shale 
  

  

  Hard 
  grey 
  argillaceous 
  sandstone, 
  rather 
  shaly 
  ... 
  

   Sandstone 
  in 
  one 
  and 
  two-inch 
  beds 
  ... 
  

   Grey 
  shale 
  and 
  shaly 
  sandstone 
  

   Blue 
  and 
  yellow 
  shale 
  

   Shale 
  and 
  sandstone 
  (ill 
  seen) 
  

  

  (Here 
  comes 
  in 
  the 
  village 
  of 
  Yuathit, 
  below 
  which 
  the 
  section 
  

   is 
  merely 
  estimated, 
  not 
  measured.) 
  

  

  Hard 
  sandstone 
  ... 
  ,., 
  ... 
  

  

  Greenish 
  grey 
  flaggy 
  sandstone 
  and 
  bluish 
  grey 
  arenaceous 
  

   shales, 
  with 
  carbonaceous 
  markings 
  

  

  Dark 
  shales 
  with 
  a 
  few 
  nodular 
  courses 
  of 
  indurated 
  marl, 
  with 
  

   a 
  few 
  sandy 
  bands 
  here 
  and 
  there 
  

  

  Fine 
  pale 
  greenish 
  sandstone, 
  massive 
  above, 
  less 
  so 
  below 
  ... 
  

   Ditto 
  more 
  flaggy 
  

  

  Blackish 
  grey 
  arenaceous 
  shales 
  

  

  Pale 
  greenish 
  grey 
  arenaceous 
  shales, 
  and 
  greenish 
  and 
  yellow- 
  

   ish 
  grey 
  sandstone 
  in 
  intercalated 
  thick 
  beds, 
  fine 
  grained, 
  

   compact, 
  and 
  with 
  carbonaceous 
  marks 
  and 
  rippling 
  

  

  Massive 
  argillaceous 
  greenish 
  sandstone, 
  with 
  an 
  amylaceous 
  

   fracture 
  

  

  Ditto 
  with 
  shales, 
  thin 
  bedded 
  

  

  Dark 
  shales, 
  with 
  a 
  few 
  sandy 
  beds 
  ... 
  

  

  Ditto, 
  but 
  the 
  sandstone 
  more 
  thickly 
  bedded, 
  and 
  less 
  regularly 
  

   dispersed, 
  ripple 
  marks 
  in 
  places 
  ... 
  ... 
  

  

  Grey 
  massive 
  sandstone, 
  thick 
  bedded 
  

  

  Massive 
  sandstones, 
  thick 
  bedded 
  with 
  occasional 
  beds 
  of 
  shale 
  

  

  870 
  

  

  

  

  3 
  

  

  

  

  12 
  

  

  

  

  2 
  

  

  6 
  

  

  250 
  

  

  

  

  51 
  

  

  

  

  17 
  

  

  

  

  173 
  

  

  

  

  16 
  

  

  

  

  1 
  

  

  

  

  78 
  

  

  

  

  25 
  

  

  

  

  103 
  

  

  

  

  1 
  

  

  

  

  1 
  

  

  6 
  

  

  51 
  

  

  

  

  5 
  

  

  

  

  65 
  

  

  

  

  85 
  

  

  

  

  1,810 
  

  

  7 
  

  

  45 
  

  

  275 
  

  

  45 
  

  

  50 
  

  

  255 
  

  

  180 
  

  

  100 
  

  

  

  

  200 
  

  

  

  

  200 
  

  

  

  

  190 
  

  

  

  

  260 
  

  

  

  

  500 
  

  

  

  

  4,117 
  

  

  

  

  ( 
  291 
  ) 
  

  

  