﻿138 
  THEOBALD 
  : 
  GEOLOGY 
  OP 
  PEGU. 
  

  

  published 
  in 
  the 
  Selections 
  from 
  the 
  Records 
  of 
  the 
  Government 
  of 
  

   India, 
  No. 
  X, 
  page 
  33, 
  in 
  1856. 
  Dr. 
  Oldham 
  there 
  divides 
  the 
  rocks 
  

   which 
  cover 
  so 
  large 
  a 
  portion 
  of 
  Martaban 
  and 
  Tenasserim 
  Provinces 
  

   into 
  a 
  lower 
  division, 
  which 
  he 
  terms 
  the 
  "Mergui" 
  series, 
  well 
  

   developed 
  in 
  the 
  South, 
  and 
  an 
  upper 
  or 
  " 
  Moulmein 
  * 
  series, 
  largely 
  

   developed 
  to 
  the 
  North, 
  and 
  the 
  most 
  conspicuous 
  member 
  of 
  which 
  is 
  the 
  

   massive 
  limestone 
  which 
  forms 
  so 
  picturesque 
  a 
  feature 
  in 
  the 
  country 
  

   round 
  Moulmein 
  and 
  the 
  Salwin 
  valley. 
  The 
  entire 
  thickness 
  of 
  these 
  

   two 
  divisions 
  is 
  placed 
  at 
  about 
  9,000, 
  and 
  the 
  age 
  of 
  the 
  whole 
  fixed 
  

   as 
  Palaeozoic, 
  the 
  Moulmein 
  beds 
  being 
  provisionally 
  placed 
  in 
  the 
  " 
  lower 
  

   carboniferous 
  group 
  of 
  European 
  geologists." 
  Since 
  Dr. 
  Oldham's 
  

   account 
  of 
  these 
  beds 
  was 
  written, 
  nothing 
  has 
  been 
  added 
  to 
  our 
  know- 
  

   ledge 
  of 
  them, 
  save 
  that, 
  from 
  the 
  evidence 
  of 
  a 
  few 
  fossils 
  procured 
  

   from 
  Zwah-ga-byn, 
  a 
  limestone 
  hill 
  forming 
  a 
  prominent 
  landmark 
  

   above 
  Moulmein, 
  and 
  popularly 
  known 
  as 
  the 
  ' 
  Duke 
  of 
  York's 
  nose/ 
  the 
  

   limestone 
  in 
  question 
  may 
  certainly 
  be 
  pronounced 
  of 
  the 
  age 
  of 
  the 
  

   Carboniferous 
  Limestone 
  of 
  Europe. 
  Dr. 
  Oldham 
  remarks 
  that 
  this 
  lime- 
  

   stone 
  is 
  more 
  sparingly 
  developed 
  to 
  the 
  South 
  than 
  in 
  the 
  Martaban 
  

   district, 
  but 
  it 
  is 
  probable 
  that 
  the 
  limestone 
  met 
  with 
  in 
  the 
  Mergui 
  

   Archipelago 
  belongs 
  to 
  the 
  same 
  formation. 
  It 
  is 
  by 
  no 
  means 
  certain 
  

   how 
  far 
  this 
  rock 
  extends 
  to 
  the 
  North 
  in 
  British 
  territory, 
  the 
  Yunzalin 
  

   district 
  being 
  quite 
  unexplored 
  ; 
  and 
  the 
  grey 
  limestone, 
  worked 
  in 
  the 
  hills 
  

   North-east 
  of 
  Tonghoo, 
  seems 
  rather 
  to 
  occur 
  as 
  a 
  subordinate 
  member 
  

   of 
  the 
  next 
  group, 
  and 
  is 
  moreover 
  trifling 
  in 
  its 
  development 
  in 
  

   comparison 
  with 
  the 
  Cyclopean 
  masses 
  of 
  the 
  rock 
  in 
  the 
  Salwin 
  and 
  

   Attaran 
  valleys. 
  Beyond 
  the 
  British 
  frontier 
  however 
  in 
  this 
  direction, 
  

   it 
  would 
  seem 
  to 
  be 
  largely 
  developed, 
  forming 
  large 
  tracts 
  of 
  country 
  

   in 
  Karen-ni 
  and 
  towards 
  the 
  sources 
  of 
  the 
  Salwin. 
  The 
  most 
  marked 
  

   feature 
  of 
  this 
  limestone 
  is 
  its 
  mode 
  of 
  occurrence 
  in 
  steeply 
  scarped 
  

   hills, 
  the 
  sides 
  of 
  which 
  overhang, 
  as 
  may 
  be 
  seen 
  in 
  the 
  case 
  of 
  the 
  

   hills 
  near 
  Moulmein, 
  which 
  rise 
  abruptly 
  from 
  the 
  low 
  inundated 
  plains 
  

   ( 
  .326 
  ) 
  

  

  