﻿<1% 
  THEOBALD 
  : 
  GEOLOGY 
  OE 
  PEGU. 
  

  

  Lower 
  {Mogoung) 
  sands 
  and 
  shales. 
  — 
  Below 
  the 
  last 
  described 
  clay, 
  

   occurs 
  a 
  rather 
  varied 
  assemblage 
  of 
  beds 
  of 
  sand 
  and 
  shale, 
  partaking 
  to 
  

   some 
  extent 
  of 
  the 
  character 
  of 
  the 
  upper 
  beds 
  of 
  the 
  group, 
  and 
  con- 
  

   taining 
  sparingly 
  both 
  silicified 
  wood 
  and 
  mammalian 
  bones, 
  but 
  towards 
  

   the 
  base 
  appearing 
  to 
  pass 
  into 
  beds 
  containing 
  marine 
  shells 
  and 
  corals 
  

   (Cladocera) 
  . 
  

  

  A 
  section 
  of 
  these 
  beds 
  is 
  seen 
  on 
  the 
  Kyeenee 
  stream 
  above 
  

   Mogoung, 
  which 
  may 
  be 
  taken 
  as 
  illustrating 
  their 
  general 
  character; 
  

   and 
  though 
  some 
  of 
  the 
  beds 
  much 
  resembled 
  portions 
  of 
  the 
  higher 
  

   beds 
  of 
  the 
  group 
  containing 
  bones 
  and 
  fossil-wood, 
  I 
  carefully 
  searched, 
  

   but 
  in 
  vain, 
  for 
  any 
  trace 
  of 
  fossils. 
  

  

  {Descending 
  section!) 
  

  

  Ft. 
  In. 
  

   Pebbly 
  sandstone, 
  about 
  ... 
  ••• 
  •■• 
  ••• 
  50 
  

  

  Pale 
  silty 
  sbale 
  

  

  3 
  6 
  

  

  Very 
  false-bedded 
  pebbly 
  sandstone 
  ... 
  •• 
  — 
  16 
  

  

  Harsb 
  sandstone, 
  rather 
  irregular 
  ... 
  ... 
  ... 
  1 
  

  

  Compact 
  yellowish 
  silt, 
  with 
  a 
  central 
  band 
  of 
  kidney-shaped 
  

  

  nodules 
  one 
  to 
  two 
  feet 
  in 
  diameter 
  ... 
  ... 
  ... 
  2 
  

  

  Gravelly 
  sand 
  

  

  Yellow 
  pebbly 
  sandstone 
  

  

  Pebbly 
  conglomerate, 
  loose 
  and 
  gravelly, 
  a 
  few 
  feet. 
  

  

  2 
  

   3 
  

  

  74 
  9 
  

  

  A 
  small 
  but 
  instructive 
  section 
  of 
  these 
  beds 
  is 
  also 
  seen 
  in 
  

   the 
  Myouk 
  Naweng 
  a 
  little 
  below 
  Tham-bya-gon, 
  where 
  pale 
  silty 
  

   shales 
  are 
  seen 
  supporting 
  a 
  great 
  thickness 
  of 
  rusty 
  incoherent 
  sand 
  

   traversed 
  by 
  thin 
  layers 
  of 
  shale 
  and 
  a 
  coarse 
  quartzose 
  conglomerate 
  

   with 
  clay-galls, 
  and 
  cavernous 
  hollows, 
  coated 
  with 
  limonite. 
  In 
  this 
  

   conglomerate 
  I 
  found 
  mammalian 
  bones, 
  shark's 
  teeth, 
  and 
  a 
  small 
  log 
  

   of 
  fossil-wood 
  about 
  two 
  feet 
  long 
  of 
  the 
  same 
  character 
  as 
  the 
  wood 
  

   commonly 
  found 
  in 
  the 
  upper 
  sand, 
  though 
  less 
  completely 
  mineralised. 
  

   To 
  the 
  present 
  division 
  of 
  the 
  fossil-wood 
  group 
  may 
  probably 
  be 
  

   referred 
  the 
  beds 
  rather 
  imperfectly 
  seen 
  in 
  the 
  East 
  bank 
  of 
  the 
  

   ( 
  260 
  ) 
  

  

  