﻿88 
  0. 
  Holtedahl 
  — 
  Paleozoic 
  Formations 
  of 
  

  

  Porsanger 
  series. 
  Thickness 
  between 
  500 
  and 
  1000 
  

   meters. 
  Above 
  is 
  the 
  Porsanger 
  dolomite 
  with 
  intra- 
  

   formational 
  conglomerates, 
  about 
  100 
  meters 
  thick. 
  

   Below 
  is 
  the 
  Porsanger 
  sandstone, 
  terminating 
  

   upwards 
  in 
  shales. 
  

   Conformable 
  contact. 
  

   Lower 
  Cambrian 
  time. 
  

  

  Dividals 
  series 
  or 
  Hyolithus 
  zone. 
  Thickness 
  about 
  240 
  

   meters. 
  A 
  series 
  of 
  shales 
  and 
  sandstones 
  with 
  Platy- 
  

   solenites 
  and 
  other 
  fossils. 
  

   Great 
  unconformity. 
  

   Pre-Cambrian 
  peneplained 
  floor. 
  A 
  complex 
  of 
  ancient 
  rocks. 
  

  

  The 
  distribution 
  of 
  the 
  various 
  formations 
  is 
  given 
  in 
  

   the 
  map, 
  fig. 
  1. 
  The 
  object 
  of 
  the 
  present 
  article 
  is 
  to 
  

   tell 
  about 
  the 
  relatively 
  unaltered 
  sedimentary 
  series, 
  and 
  

   therefore 
  the 
  pre-Cambrian 
  formations, 
  and 
  the 
  meta- 
  

   morphic 
  rocks 
  of 
  the 
  Caledonian 
  deformation, 
  are 
  not 
  to 
  

   be 
  considered. 
  

  

  Lower 
  Cambrian 
  Shale 
  and 
  Sandstone 
  Series 
  with 
  Platysolenites. 
  

  

  Lying 
  unconformably 
  upon 
  the 
  generally 
  highly 
  meta- 
  

   morphosed 
  pre-Cambrian, 
  which 
  consists 
  of 
  hornblende 
  

   schists, 
  quartzites, 
  gneiss, 
  and 
  granite, 
  different 
  in 
  differ- 
  

   ent 
  districts, 
  is 
  found 
  a 
  not 
  very 
  thick 
  series 
  of 
  Lower 
  

   Cambrian 
  green 
  and 
  reddish 
  shale, 
  alternating 
  with 
  sand- 
  

   stone 
  beds. 
  The 
  thickness 
  of 
  this, 
  the 
  Dividals 
  series, 
  

   is 
  about 
  240 
  meters. 
  That 
  is 
  a 
  very 
  characteristic 
  series, 
  

   which 
  the 
  writer 
  after 
  having 
  seen 
  it 
  inside 
  the 
  Alten- 
  

   fjord 
  in 
  1914 
  announced 
  in 
  a 
  preliminary 
  paper 
  3 
  as 
  being 
  

   a 
  continuation 
  of 
  the 
  "Hyolithus 
  zone" 
  of 
  the 
  Swedish 
  

   geologists, 
  the 
  "Dividals 
  series" 
  of 
  K. 
  Pettersen, 
  who 
  

   for 
  many 
  years 
  worked 
  on 
  the 
  geology 
  of 
  the 
  Tromso 
  

   district, 
  the 
  Norwegian 
  area 
  to 
  the 
  southwest 
  of 
  Fin- 
  

   marken. 
  In 
  this 
  series 
  are 
  known 
  Lower 
  Cambrian 
  

   fossils, 
  the 
  bulk 
  of 
  which 
  were 
  found 
  recently 
  in 
  the 
  well 
  

   known 
  sections 
  of 
  Tornetrask 
  of 
  northern 
  Sweden. 
  4 
  

   Fossils 
  of 
  this 
  time 
  have 
  also 
  since 
  been 
  found 
  at 
  differ- 
  

   ent 
  localities 
  in 
  Finmarken. 
  A 
  species 
  of 
  Obolus 
  in 
  badly 
  

   preserved 
  specimens 
  was 
  found 
  in 
  1915 
  by 
  the 
  writer 
  in 
  

   a 
  section 
  on 
  the 
  Alten 
  River 
  (fig. 
  2) 
  and 
  in 
  1917 
  Platyso- 
  

   lenites 
  antiquissimus 
  Eichwald 
  was 
  found 
  at 
  two 
  differ- 
  

   ent 
  places 
  farther 
  to 
  the 
  east, 
  south 
  of 
  the 
  Porsanger- 
  

  

  e 
  Norges 
  Geologiske 
  Undersokelse, 
  Aarbok, 
  1915. 
  

  

  * 
  See 
  Guide 
  Rook 
  No. 
  6, 
  XT, 
  Tnternat. 
  Geol. 
  Congress, 
  Stockholm. 
  

  

  