﻿TRAP. 
  25 
  

  

  the 
  western 
  scarp 
  no 
  succession 
  can 
  be 
  traced. 
  The 
  greater 
  part 
  of 
  this 
  

  

  side 
  of 
  the 
  hill 
  consists 
  of 
  a 
  vitreous, 
  aphanitic 
  compact 
  trap 
  ; 
  it 
  is 
  banded 
  

  

  and 
  contorted, 
  and 
  parts 
  vary 
  from 
  trachy-felsite 
  to 
  obsidian, 
  the 
  latter 
  

  

  occurring 
  in 
  alternating 
  layers 
  a 
  few 
  inches 
  in 
  thickness, 
  and 
  following 
  

  

  the 
  sharp 
  contortions 
  of 
  the 
  rock 
  mass. 
  Parts 
  of 
  this 
  rock 
  are 
  agglome- 
  

  

  ratic, 
  with 
  rounded 
  lumps 
  and 
  irregular 
  masses 
  of 
  obsidian, 
  and 
  of 
  a 
  green 
  

  

  trap, 
  whose 
  crust, 
  or 
  outer 
  part, 
  passes 
  into 
  the 
  rock 
  mass. 
  Slikensides 
  

  

  was 
  observed 
  on 
  a 
  few 
  of 
  the 
  enclosed 
  lumps, 
  the 
  composition 
  of 
  which 
  

  

  is 
  often 
  identical 
  with 
  the 
  enclosing 
  matrix. 
  

  

  The 
  Barda 
  hills 
  consist 
  of 
  rocks 
  very 
  similar 
  to 
  those 
  in 
  the 
  western 
  

  

  ridge 
  of 
  the 
  Junagarh 
  mass. 
  A 
  porphyritic 
  quartz- 
  

   Barda 
  bills. 
  . 
  . 
  

  

  bearing 
  relsite 
  prevails 
  in 
  the 
  northern 
  part 
  of 
  the 
  

  

  Barda 
  group 
  ; 
  the 
  rock 
  has 
  the 
  appearance 
  of 
  having 
  undergone 
  change, 
  

   or 
  partial 
  decomposition 
  ; 
  it 
  contains 
  free 
  quartz 
  in 
  abundance, 
  some 
  at 
  

   least 
  of 
  which 
  is 
  a 
  secondary 
  product. 
  It 
  is 
  very 
  similar 
  to 
  the 
  gneissic- 
  

   looking 
  rock 
  on 
  the 
  west 
  flank 
  of 
  the 
  western 
  ridge 
  of 
  the 
  Junagarh 
  hills. 
  

   A 
  closely 
  allied 
  rock 
  forms 
  the 
  hills 
  in 
  the 
  southernmost 
  part 
  of 
  the 
  

   Quartz-felsite 
  and 
  Bardas 
  ; 
  but, 
  besides 
  the 
  contained 
  crystals 
  of 
  

   trachytic 
  ash. 
  quartz, 
  there 
  is 
  another 
  vitreous 
  constituent, 
  amber- 
  

  

  coloured, 
  and 
  below 
  quartz 
  in 
  hardness. 
  A 
  third 
  variety, 
  associated 
  

   with 
  the 
  latter, 
  is 
  a 
  pale-grey 
  trachytic 
  ash, 
  which 
  contains 
  a 
  decomposed 
  

   wax-green 
  soapy 
  mineral. 
  These 
  rocks 
  weather 
  into 
  huge 
  spheroidal, 
  or 
  

   boulder-like 
  masses, 
  piled 
  one 
  above 
  another. 
  In 
  the 
  neighbourhood 
  of 
  

   Morpur, 
  and 
  of 
  the 
  deserted 
  place 
  called 
  Gumli, 
  1 
  a 
  very 
  tough 
  granular 
  

   quartz-felsite 
  prevails 
  ; 
  this 
  rock 
  much 
  resembles 
  that 
  forming 
  the 
  axial 
  

   portion 
  of 
  the 
  western 
  range 
  in 
  the 
  Junagarh 
  hills. 
  The 
  outlying 
  ridge 
  

   of 
  hill 
  at 
  Dhebar 
  on 
  the 
  north 
  side 
  of 
  the 
  Bardas, 
  consists 
  of 
  a 
  dull 
  

   fawn-coloured 
  crypto-crystalline, 
  or 
  minutely 
  granular 
  felsite. 
  

  

  The 
  group 
  of 
  hills 
  north 
  and 
  north-west 
  of 
  Dhank 
  consists 
  of 
  various 
  

  

  kinds 
  of 
  felsites, 
  that 
  would 
  require 
  a 
  closer 
  study 
  

  

  Hills 
  near 
  Dhank. 
  .. 
  J 
  

  

  than 
  I 
  have 
  been 
  able 
  to 
  give 
  them, 
  to 
  define 
  their 
  

  

  1 
  At 
  Gumli 
  or 
  ' 
  Ghumli, 
  ' 
  a 
  former 
  capital 
  of 
  the 
  Jaitwas 
  (or 
  ' 
  Jethwas 
  '), 
  there 
  are 
  

   extensive 
  ruins, 
  including 
  some 
  exquisitely 
  carved 
  stone 
  temples. 
  

  

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