﻿36 
  FEDDEN 
  I 
  GEOLOGY 
  OF 
  KATHIAWAR 
  PENINSULA 
  IN 
  GTZERAT. 
  

  

  the 
  southern 
  shore 
  of 
  the 
  Gulf 
  of 
  Cutch 
  east 
  of 
  the 
  lateritic 
  rocks 
  in 
  

  

  the 
  vicinity 
  of 
  Asota. 
  

  

  The 
  rocks 
  of 
  the 
  present 
  group 
  are, 
  however, 
  only 
  found 
  in 
  portions 
  of 
  

  

  the 
  marginal 
  belt, 
  being 
  exposed 
  at 
  intervals 
  in 
  

   Position. 
  

  

  the 
  south-eastern 
  part 
  of 
  the 
  field, 
  while 
  the 
  largest 
  

  

  spread 
  of 
  Gaj 
  rocks 
  occupies 
  the 
  boundary 
  country 
  between 
  Halar 
  and 
  

  

  Oka-Mandal. 
  Within 
  this 
  latter 
  area 
  the 
  beds 
  are 
  readily 
  recognised 
  by 
  

  

  their 
  fossils, 
  which 
  in 
  places 
  are 
  very 
  numerous. 
  

  

  The 
  beds 
  everywhere 
  are 
  so 
  nearly 
  horizontal, 
  that 
  any 
  continuous 
  

  

  vertical 
  succession 
  cannot 
  be 
  expected 
  in 
  so 
  flat 
  a 
  

   Thickness. 
  . 
  . 
  

  

  country 
  : 
  scarcely 
  any 
  individual 
  section 
  can 
  show 
  

  

  more 
  than 
  40 
  or 
  50 
  feet 
  of 
  strata, 
  while 
  the 
  aggregate 
  thickness 
  of 
  the 
  

  

  Gaj 
  beds 
  alone 
  must 
  amount 
  to 
  several 
  hundred 
  feet. 
  

  

  In 
  the 
  south-eastern 
  part 
  of 
  the 
  field, 
  rocks 
  of 
  tertiary 
  age 
  are 
  only 
  met 
  

  

  with 
  verv 
  sparingly. 
  There 
  are 
  a 
  few 
  isolated 
  out- 
  

   South-eastern 
  area, 
  

  

  crops 
  along 
  the 
  margin 
  of 
  the 
  traps 
  and 
  laterites, 
  

  

  and 
  some 
  inliers 
  in 
  the 
  alluvium, 
  mostly 
  too 
  small 
  to 
  be 
  marked 
  on 
  the 
  

   map 
  accompanying 
  this 
  paper 
  ; 
  besides 
  a 
  rather 
  large 
  spread 
  in 
  the 
  Gogha 
  

   district, 
  which 
  includes 
  the 
  little 
  island 
  of 
  Piram 
  (Perim) 
  — 
  long 
  renowned 
  

   for 
  its 
  abundance 
  of 
  fossil 
  bones 
  and 
  fossil 
  wood. 
  I 
  have 
  included 
  all 
  

   tertiary 
  beds 
  of 
  this 
  south-eastern 
  area 
  in 
  the 
  present 
  (Gaj) 
  group. 
  They 
  

   are 
  quite 
  unconformable 
  to 
  the 
  lateritic 
  rocks 
  on 
  which 
  they 
  rest 
  in 
  the 
  

   northern 
  part 
  ; 
  while 
  in 
  the 
  south, 
  the 
  latter 
  are 
  absent, 
  and 
  the 
  tertiary 
  

   beds 
  are 
  seen 
  in 
  places 
  to 
  rest 
  directly 
  upon 
  the 
  traps. 
  The 
  fossiliferous 
  

   beds 
  of 
  western 
  Kathiawar 
  have 
  no 
  place 
  in 
  the 
  present 
  area 
  ; 
  it 
  would 
  

   appear 
  that 
  they 
  are 
  here 
  deeply 
  overlapped 
  by 
  other 
  beds 
  which 
  

   I 
  am 
  disposed 
  to 
  regard 
  as 
  representing 
  the 
  uppermost 
  portion 
  of 
  the 
  

   Gaj 
  group. 
  Indeed, 
  some 
  of 
  these 
  beds 
  closely 
  resemble 
  certain 
  members 
  

   of 
  the 
  Manchhar 
  group 
  in 
  Sind, 
  where, 
  though 
  almost 
  entirely 
  of 
  fluvi- 
  

   atile 
  origin, 
  it 
  contains 
  in 
  a 
  few 
  places 
  bands 
  with 
  Gaj 
  fossils, 
  intercal- 
  

   ated 
  above 
  the 
  base 
  of 
  the 
  group. 
  There 
  are 
  also 
  other 
  indications 
  that 
  

   there 
  was 
  no 
  break 
  in 
  time 
  between 
  the 
  two 
  groups. 
  1 
  

  

  1 
  See 
  Manual, 
  Geol, 
  Inch, 
  pp. 
  342, 
  468, 
  469 
  y 
  and 
  Memoirs, 
  Vol. 
  VII, 
  p. 
  188. 
  

  

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  108 
  ) 
  

  

  