﻿94 
  THEOBALD 
  : 
  GEOLOGY 
  OF 
  PEGU. 
  

  

  usually 
  very 
  little 
  display 
  of 
  rock 
  at 
  the 
  surface 
  ; 
  but 
  in 
  some 
  places, 
  

   where 
  thick 
  beds 
  of 
  shale 
  form 
  the 
  surface, 
  the 
  ground 
  is 
  more 
  level, 
  and 
  

   deeply 
  cut 
  by 
  stream 
  channels, 
  as 
  exemplified 
  West 
  of 
  Sitsyahn, 
  above 
  

   Prome. 
  Such 
  is 
  the 
  general 
  arrangement 
  of 
  the 
  ground 
  in 
  Western 
  

   Prome 
  ; 
  occupied 
  by 
  beds 
  newer 
  than 
  the 
  Nummulitic 
  group, 
  and 
  em- 
  

   bracing 
  the 
  whole 
  country 
  between 
  the 
  Nummulitic 
  boundary 
  and 
  the 
  

   river. 
  

  

  Sixteen 
  miles 
  West 
  of 
  the 
  Irrawadi 
  stands 
  the 
  frontier 
  village 
  of 
  

   Phouno'aeing, 
  and 
  looking 
  Westward 
  from 
  it, 
  the 
  eye 
  encounters 
  a 
  forest- 
  

   clad 
  range, 
  which, 
  crossing 
  the 
  frontier 
  from 
  the 
  North, 
  extends 
  down 
  

   South 
  for 
  nearly 
  eight 
  miles, 
  and 
  affords 
  in 
  its 
  bolder 
  outlines 
  and 
  denser 
  

   vegetation 
  a 
  pleasurable 
  contrast 
  to 
  the 
  lesser 
  ranges 
  to 
  the 
  Eastward. 
  

   Along 
  the 
  Eastern 
  foot 
  of 
  this 
  range 
  runs 
  the 
  boundary 
  of 
  the 
  Nummu- 
  

   litic 
  group, 
  which 
  I 
  will 
  follow 
  out 
  in 
  some 
  detail. 
  Between 
  Phoungae- 
  

   ino- 
  and 
  the 
  range 
  to 
  the 
  Westward 
  flows 
  the 
  small 
  stream, 
  which 
  after 
  

   a 
  somewhat 
  tortuous 
  course, 
  flows 
  into 
  the 
  Irrawadi, 
  three 
  miles 
  above 
  

   Thaietmio, 
  running 
  for 
  its 
  entire 
  course 
  through 
  beds 
  of 
  the 
  Prome 
  

   group, 
  or 
  through 
  some 
  considerable 
  spreads 
  of 
  alluvium. 
  In 
  the 
  stream, 
  

   near 
  Phoungaeing, 
  blue 
  shales 
  are 
  seen, 
  which 
  I 
  consider 
  as 
  at 
  the 
  base 
  

   of 
  the 
  Prome 
  group, 
  and 
  corresponding 
  with 
  those 
  seen 
  near 
  Sitsyahn, 
  

   and 
  much 
  the 
  same 
  shales 
  are 
  seen 
  some 
  miles 
  further 
  to 
  the 
  South 
  

   overlying 
  the 
  Nummulitic 
  group. 
  On 
  ascending 
  from 
  the 
  small 
  stream 
  

   to 
  the 
  range, 
  the 
  blue 
  shales 
  are 
  left 
  behind, 
  and 
  Nummulitic 
  lime- 
  

   stone 
  is 
  found 
  forming 
  much 
  of 
  the 
  higher 
  parts 
  of 
  the 
  ridge, 
  and 
  the 
  

   face 
  of 
  its 
  Eastern 
  slope, 
  the 
  rock 
  dipping 
  at 
  a 
  high 
  angle 
  East- 
  

   north-east. 
  Eight 
  miles 
  South-south-east, 
  from 
  Phoungaeing, 
  is 
  the 
  

   village 
  of 
  Pimakhon, 
  situated 
  on 
  the 
  verge 
  of 
  the 
  sandy 
  tract 
  pre- 
  

   viously 
  noticed; 
  and 
  two 
  miles 
  North-west 
  of 
  this 
  village, 
  the 
  range 
  

   I 
  am 
  describing 
  terminates 
  in 
  some 
  confused 
  hilly 
  ground, 
  of 
  the 
  

   ordinary 
  character 
  and 
  elevation 
  of 
  the 
  neighbourhood. 
  A 
  small 
  stream 
  

   here 
  intersects 
  both 
  the 
  Nummulitic 
  and 
  Prome 
  groups, 
  affording 
  

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