﻿FOSSIL-WOOD 
  GROUP. 
  73 
  

  

  Irrawadi, 
  close 
  to 
  Keng-yua, 
  above 
  Myanoung. 
  The 
  beds 
  here 
  exposed 
  

   dip 
  nearly 
  due 
  East, 
  about 
  30°, 
  and 
  are 
  cut 
  so 
  obliquely 
  by 
  the 
  river 
  

   that 
  their 
  thickness 
  cannot 
  be 
  very 
  closely 
  measured, 
  and 
  unfortunately 
  

   the 
  most 
  interesting 
  bed 
  containing 
  bones 
  is 
  the 
  lowest 
  in 
  the 
  section 
  and 
  

   to 
  a 
  great 
  extent 
  covered 
  by 
  the 
  river. 
  

  

  {Descending 
  order.) 
  

  

  1. 
  Yellow 
  earthy 
  sandstone 
  with 
  irregular 
  concretionary 
  or 
  lenticular 
  Ft. 
  In- 
  

  

  courses 
  of 
  fine 
  sandstone, 
  which 
  weathers 
  out 
  from 
  the 
  softer 
  rock 
  

   enclosing 
  it, 
  somewhat 
  after 
  the 
  fashion 
  of 
  kunkur 
  nodules, 
  which 
  it 
  

   superficially 
  resembles. 
  

  

  2. 
  Harder 
  sandstone 
  of 
  similar 
  character 
  resting 
  on 
  yellow 
  sand 
  containing 
  

  

  marine 
  shells 
  ... 
  ... 
  ... 
  ... 
  ..." 
  80 
  

  

  3. 
  Brownish 
  clunchy 
  clay 
  passing 
  down 
  into 
  blue 
  clay 
  ... 
  ... 
  30 
  

  

  4. 
  Sandstone 
  like 
  No. 
  1 
  passing 
  down 
  into 
  ... 
  ... 
  ... 
  30 
  

  

  5. 
  Rather 
  false 
  bedded 
  conglomerate 
  ... 
  ... 
  ... 
  60 
  

  

  6. 
  Yellow 
  sandstone 
  ... 
  ... 
  ... 
  ... 
  ... 
  30 
  

  

  7. 
  Wet 
  sandy 
  clay, 
  (many 
  springs) 
  ... 
  ... 
  ... 
  ... 
  6 
  

  

  8. 
  Yellow 
  sandstone 
  with 
  conglomerate 
  courses 
  containing 
  shark's 
  teeth, 
  

  

  rolled 
  oysters, 
  chelonian 
  plates, 
  and 
  bones, 
  some 
  apparently 
  mam- 
  

   malian. 
  

  

  The 
  entire 
  thickness 
  of 
  beds 
  seen 
  here 
  is 
  probably 
  not 
  less 
  than 
  two 
  

   hundred 
  and 
  fifty 
  feet, 
  though 
  the 
  conditions 
  are 
  unfavorable 
  for 
  accurate 
  

   measurement. 
  Bed 
  8 
  is 
  only 
  ossiferous 
  towards 
  the 
  base, 
  where 
  it 
  

   becomes 
  concealed 
  by 
  the 
  river. 
  The 
  pebbles 
  in 
  the 
  conglomerate 
  are 
  

   small, 
  the 
  bulk 
  of 
  the 
  rock 
  consisting 
  of 
  coarse 
  sand, 
  in 
  parts 
  friable, 
  

   but 
  generally 
  cemented 
  into 
  a 
  hard 
  rock. 
  The 
  shark's 
  teeth 
  are 
  all 
  small 
  

   and 
  not 
  very 
  numerous. 
  

  

  The 
  above 
  remarks 
  nearly 
  exhaust 
  all 
  the 
  points 
  of 
  interest 
  connected 
  

   with 
  this 
  group 
  in 
  Pegu, 
  that 
  is, 
  on 
  the 
  Western 
  side 
  of 
  the 
  Pegu 
  

   Yomah 
  ; 
  but 
  a 
  considerable 
  change 
  in 
  some 
  respects 
  takes 
  place 
  in 
  the 
  

   upper 
  beds 
  of 
  this 
  group 
  in 
  the 
  Tonghoo 
  district 
  (now 
  attached 
  to 
  

   Martaban) 
  on 
  the 
  Eastern 
  side 
  of 
  the 
  range. 
  

  

  As 
  I 
  have 
  already 
  remarked, 
  there 
  are 
  satisfactory 
  grounds 
  for 
  

   assuming 
  that 
  the 
  fossil-wood 
  group 
  originally 
  extended 
  as 
  far 
  South 
  

   as 
  Rangoon, 
  and 
  that 
  sundry 
  traces 
  of 
  its 
  presence 
  beneath 
  the 
  gravelly 
  

   k 
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  261 
  ) 
  

  

  