﻿Finmarken 
  in 
  Northern 
  Norway. 
  95 
  

  

  geneous. 
  In 
  places 
  with 
  distinct 
  bedding, 
  the 
  process 
  of 
  

   replacement 
  is 
  more 
  complete 
  in 
  some 
  layers 
  than 
  in 
  

   others. 
  

  

  The 
  Raipas 
  series 
  is 
  marked 
  especially 
  by 
  the 
  presence 
  

   of 
  thick 
  masses 
  of 
  volcanic 
  material, 
  tuffs 
  and 
  lava 
  beds. 
  

   The 
  fact 
  that 
  these 
  are 
  not 
  known 
  from 
  the 
  Varanger 
  

   Peninsula, 
  200 
  kilometers 
  to 
  the 
  northeast, 
  does 
  not 
  in 
  my 
  

   opinion 
  contradict 
  a 
  contemporaneity 
  of 
  the 
  series 
  in 
  the 
  

   two 
  districts. 
  The 
  volcanic 
  activity 
  seems 
  to 
  have 
  been 
  

   confined 
  to 
  the 
  western 
  district. 
  

  

  Remarks 
  on 
  the 
  Cryptozo 
  on-like 
  structures. 
  — 
  These 
  

   concretionary 
  masses 
  are 
  found 
  in 
  Raipasf 
  jeld 
  in 
  Alten, 
  

   at 
  the 
  Porsangerf 
  jord, 
  and 
  on 
  the 
  north 
  side 
  of 
  the 
  Var- 
  

   anger 
  Peninsula 
  in 
  the 
  Syltef 
  jord. 
  They 
  are 
  especially 
  

   well 
  developed 
  in 
  the 
  Porsanger 
  dolomite, 
  where 
  a 
  rock 
  

   several 
  meters 
  thick 
  is 
  made 
  up 
  of 
  them. 
  We 
  find 
  here 
  

   different 
  types. 
  One 
  (iig. 
  3) 
  is 
  identical 
  with 
  the 
  Gym- 
  

   nosolen 
  ramsayi 
  described 
  by 
  Steinmann 
  from 
  pieces 
  of 
  

   dolomite 
  brought 
  by 
  W. 
  Ramsay 
  from 
  the 
  western 
  shore 
  

   of 
  the 
  Kanin 
  Peninsula 
  on 
  the 
  arctic 
  coast 
  of 
  Russia, 
  6 
  

   east 
  of 
  the 
  White 
  Sea. 
  This 
  type 
  seems 
  to 
  be 
  very 
  much 
  

   like 
  forms 
  of 
  .Cryptozo 
  on 
  minnesotense 
  of 
  Winchell, 
  7 
  

   which 
  is 
  described 
  as 
  consisting 
  of 
  subcylindrical 
  and 
  

   upwardly 
  directed 
  cones 
  from 
  1 
  to 
  2 
  inches 
  in 
  diameter, 
  

   giving 
  the 
  appearance 
  of 
  a 
  succession 
  of 
  cups, 
  or 
  cones, 
  

   piled 
  on 
  top 
  of 
  each 
  other. 
  In 
  addition 
  to 
  this 
  type, 
  we 
  

   have, 
  however, 
  many 
  others, 
  which 
  are 
  more 
  hemispheric 
  

   in 
  structure, 
  the 
  convexity 
  varying 
  in 
  all 
  sorts 
  of 
  ways, 
  

   till 
  we 
  meet 
  a 
  type 
  of 
  rock 
  that 
  in 
  vertical 
  section 
  appears 
  

   as 
  a 
  very 
  slightly 
  curving 
  set 
  of 
  laminae. 
  In 
  the 
  author's 
  

   opinion 
  it 
  seems 
  impossible 
  to 
  distinguish 
  between 
  these 
  

   types 
  of 
  structures, 
  as 
  all 
  sorts 
  of 
  transitional 
  forms 
  

   occur, 
  and 
  therefore 
  he 
  also 
  thinks 
  that 
  the 
  many 
  

   "species" 
  of 
  Cryptozoon 
  described 
  from 
  North 
  America 
  

   can 
  not 
  be 
  maintained 
  in 
  a 
  critical 
  revision. 
  I 
  can 
  not 
  

   regard 
  these 
  structures 
  as 
  real 
  fossils 
  which 
  deserve 
  

   generic 
  and 
  specific 
  names. 
  In 
  a 
  paper 
  by 
  Kalkowsky, 
  

   "Oolith 
  and 
  Stromatolith 
  in 
  norddeutschen 
  Buntsand- 
  

   stein," 
  8 
  we 
  have 
  been 
  made 
  acquainted 
  with 
  a 
  designation 
  

   that 
  serves 
  very 
  well 
  for 
  all 
  of 
  them, 
  viz., 
  stromatolites, 
  

   a 
  term 
  that 
  includes 
  these 
  laminated, 
  concentrically 
  built 
  

  

  6 
  Fennia, 
  31, 
  1911. 
  

  

  7 
  Geol. 
  Nat. 
  Hist. 
  Survey 
  Minnesota, 
  11th 
  Ann. 
  Rept., 
  1886, 
  pp. 
  313-314. 
  

  

  8 
  Zs. 
  d. 
  a. 
  geol. 
  Gesellsch., 
  60, 
  1908. 
  

  

  