﻿UPPER 
  CRETACEOUS 
  SERIES. 
  (iGNEOUS.) 
  61 
  

  

  The 
  Mangdi 
  columns 
  are 
  seen 
  for 
  about 
  half 
  a 
  mile 
  along 
  the 
  left 
  

   (eastern) 
  bank 
  of 
  the 
  Uri, 
  north-east 
  of 
  the 
  village 
  ; 
  after 
  an 
  inter-space 
  

   of 
  about 
  a 
  quarter 
  of 
  a 
  mile 
  of 
  metamorphics, 
  they 
  are 
  again 
  seen 
  along 
  

   the 
  right 
  (western) 
  bank 
  of 
  the 
  river 
  for 
  about 
  a 
  quarter 
  of 
  a 
  mile 
  south 
  

   of 
  the 
  village. 
  

  

  The 
  more 
  northerly 
  of 
  these 
  columns 
  are 
  distinctly 
  divisible 
  into 
  an 
  

   inner 
  and 
  an 
  outer 
  portion. 
  The 
  former 
  exposed 
  along 
  the 
  Uri, 
  nearly 
  

   up 
  to 
  its 
  junction 
  with 
  a 
  streamlet 
  which 
  flows 
  past 
  Chunpia, 
  are 
  

   quite 
  vertical 
  and 
  very 
  closely 
  fitting, 
  and 
  are 
  longer, 
  more 
  symmetrical, 
  

   and 
  finer-grained 
  than 
  the 
  columns 
  of 
  the 
  outer 
  portion 
  seen 
  from 
  near 
  

   the 
  junction 
  just 
  mentioned 
  along 
  the 
  water-course, 
  radiating 
  in 
  a 
  north 
  

   and 
  north-eastern 
  direction. 
  The 
  latter 
  appear 
  to 
  have 
  been 
  also 
  inclined 
  

   to 
  the 
  north-west, 
  but 
  have 
  been 
  cut 
  through 
  and 
  removed 
  by 
  the 
  river, 
  

   thus 
  laying 
  bare 
  the 
  central 
  vertical 
  ones. 
  These 
  are 
  from 
  9 
  to 
  11 
  feet 
  

   in 
  length, 
  and 
  generally 
  more 
  or 
  less 
  distinctly 
  though 
  irregularly 
  

   hexagonal, 
  the 
  disposition 
  of 
  the 
  edges 
  in 
  two 
  specimens 
  being 
  as 
  

   follows 
  : 
  — 
  

  

  

  I. 
  

  

  I. 
  

  

  

  I. 
  

  

  II. 
  

  

  1 
  . 
  

  

  4" 
  

  

  . 
  10" 
  

  

  4 
  . 
  

  

  . 
  IT' 
  . 
  

  

  . 
  1' 
  

  

  2 
  . 
  

  

  11" 
  

  

  . 
  9" 
  

  

  5 
  . 
  

  

  . 
  1'3" 
  . 
  

  

  1' 
  

  

  3 
  . 
  

  

  V 
  

  

  . 
  11" 
  

  

  6 
  . 
  

  

  . 
  1'4" 
  . 
  

  

  . 
  1'5" 
  

  

  The 
  columns 
  are 
  marked 
  very 
  regularly 
  with 
  horizontal 
  striae, 
  about 
  

   an 
  inch 
  apart, 
  and 
  radiating 
  fine 
  striae 
  pass 
  from 
  a 
  rather 
  well-defined 
  

   central 
  i( 
  nucleus 
  " 
  to 
  the 
  border, 
  which 
  is 
  about 
  an 
  inch 
  broad, 
  and 
  being 
  

   brownish 
  through 
  decomposition, 
  is 
  clearly 
  differentiated 
  from 
  the 
  body 
  

   of 
  the 
  column. 
  

  

  Dangerfield 
  noted 
  the 
  occurrence 
  of 
  basaltic 
  columns 
  along 
  the 
  whole 
  

   bed 
  of 
  the 
  Chambal, 
  on 
  the 
  Malwa 
  scarp 
  and 
  between 
  Mandlesar 
  and 
  

   Mahesar. 
  1 
  Fraser 
  also 
  notices 
  them. 
  2 
  The 
  Mahesar 
  columns 
  which 
  I 
  

   had 
  occasion 
  to 
  see 
  on 
  my 
  way 
  from 
  Barwai 
  to 
  Mandu 
  are 
  not 
  quite 
  so 
  

   long 
  as 
  some 
  of 
  the 
  inner 
  Mangdi 
  columns 
  ; 
  they 
  agree, 
  however, 
  in 
  

  

  1 
  Malcolm. 
  C. 
  Ind., 
  Vol. 
  II, 
  pp. 
  323 
  and 
  329. 
  

   9 
  Geol. 
  Trans., 
  Ser. 
  2, 
  Vol. 
  I, 
  p. 
  156. 
  

  

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  61 
  ) 
  

  

  