﻿91 
  0. 
  Holtedalil 
  — 
  Paleozoic 
  Formations 
  of 
  

  

  meters, 
  while 
  the 
  Porsanger 
  series 
  probably 
  has 
  nearly 
  

   1000 
  meters, 
  making 
  together 
  at 
  least 
  4000 
  meters 
  of 
  sedi- 
  

   ments. 
  

  

  In 
  my 
  opinion 
  the 
  Raipas 
  series 
  of 
  the 
  Alten 
  district 
  

   of 
  western 
  Finmarken, 
  exposed 
  in 
  a 
  "window" 
  through 
  

   the 
  overlying 
  metamorphic 
  thrust 
  rocks, 
  is 
  an 
  equivalent 
  

   of 
  the 
  Varanger 
  series. 
  The 
  sedimentary 
  rocks 
  of 
  the 
  

   Raipas 
  are 
  dark 
  shales, 
  several 
  horizons 
  of 
  dolomite 
  and 
  

   a 
  sandstone. 
  In 
  the 
  dolomite 
  are 
  found 
  concentric 
  struc- 
  

   tures 
  of 
  different 
  types, 
  here 
  strongly 
  silicified. 
  Through 
  

   an 
  incomplete 
  silicification 
  of 
  a 
  layer 
  having 
  tubular 
  

   laminated 
  structures 
  the 
  curious 
  subcylindrical 
  tubes 
  

   seen 
  in 
  fig. 
  5 
  have 
  originated. 
  The 
  Raipas 
  sandstone 
  

   has 
  in 
  some 
  layers 
  a 
  peculiar 
  conglomeratic 
  character, 
  

  

  Fig. 
  6. 
  

  

  Fig. 
  6. 
  — 
  Conglomeratic 
  sandstone 
  from 
  the 
  older 
  division. 
  North 
  side 
  of 
  

   the 
  Varangerfjord. 
  

  

  showing 
  a 
  concretionary 
  or 
  ball-like 
  structure, 
  found 
  also 
  

   in 
  the 
  upper 
  sandstone 
  of 
  the 
  Varanger 
  series 
  (fig. 
  6). 
  

   Microscopical 
  examination 
  shows 
  that 
  the 
  conglomeratic 
  

   sandstone 
  must 
  be 
  of 
  the 
  nature 
  of 
  an 
  intraformational 
  

   conglomerate. 
  This 
  for 
  the 
  reason 
  that 
  the 
  sandstone 
  

   of 
  the 
  groundmass 
  and 
  the 
  included 
  pieces 
  (phenoclasts) 
  

   lias 
  been 
  and 
  still 
  is 
  carbonaceous; 
  and 
  where 
  parts 
  of 
  

   the 
  quartz 
  and 
  feldspar 
  grains 
  have 
  been 
  dissolved 
  or 
  

   corroded, 
  the 
  dissolution 
  and 
  replacement 
  by 
  dolomite 
  

   material 
  have 
  gone 
  on 
  concentrically 
  in 
  a 
  regular 
  manner 
  

   in 
  the 
  round 
  inclusions, 
  when 
  the 
  material 
  was 
  homo- 
  

  

  