﻿Vol. 
  53.] 
  GLACIAL 
  PHENOMENA 
  OE 
  PALEOZOIC 
  AGE. 
  139 
  

  

  map 
  of 
  Norway 
  (1844), 
  and 
  on 
  Dr. 
  Dahll's 
  map, 
  1 
  to 
  strike 
  the 
  

   shore 
  of 
  the 
  fiord 
  in 
  the 
  peninsula 
  known 
  as 
  Kvalnes, 
  and 
  to 
  run 
  

   thence 
  to 
  Karlbotn, 
  and 
  so 
  westward 
  to 
  the 
  Tana 
  Biver 
  near 
  

   Polmag. 
  I 
  found 
  a 
  good 
  exposure 
  of 
  the 
  junction 
  a 
  short 
  distance 
  

   north-east 
  of 
  Karlbotn, 
  in 
  the 
  direction 
  of 
  Bigganjargga. 
  On 
  the 
  

   foreshore 
  the 
  granitic 
  rocks 
  rise 
  into 
  view 
  for 
  a 
  few 
  yards 
  in 
  the 
  

   form 
  of 
  a 
  low 
  boss, 
  upon, 
  and 
  closely 
  adherent 
  to, 
  which 
  lay 
  a 
  few 
  

   inches 
  of 
  hard 
  sandy 
  material. 
  Immediately 
  upon 
  this 
  came 
  well- 
  

   bedded 
  grits, 
  consisting 
  of 
  disintegrated 
  granitic 
  debris 
  redistributed 
  

   as 
  a 
  sediment, 
  which 
  passed 
  up 
  into 
  sandstones 
  of 
  the 
  usual 
  Gaisa 
  

   type. 
  On 
  one 
  side 
  of 
  the 
  boss 
  a 
  small 
  hollow, 
  due 
  to 
  a 
  pre- 
  Gaisa 
  

   joint 
  or 
  small 
  fault 
  in 
  the 
  granitic 
  rocks, 
  had 
  been 
  filled 
  up 
  with 
  a 
  

   coarse 
  conglomerate 
  before 
  being 
  overspread 
  by 
  the 
  Gaisa 
  sediments. 
  

   The 
  conglomerate 
  consisted 
  of 
  partially-rounded 
  blocks 
  of 
  granitic 
  

   rocks 
  ranging 
  up 
  to 
  6 
  inches 
  in 
  diameter. 
  The 
  surface 
  of 
  the 
  

   boss, 
  like 
  all 
  the 
  other 
  rock-exposures 
  of 
  the 
  neighbourhood, 
  was 
  

   strongly 
  glaciated, 
  but 
  neither 
  in 
  this 
  nor 
  in 
  any 
  other 
  respect 
  was 
  

   there 
  evidence 
  of 
  contemporaneous 
  ice-action. 
  The 
  section 
  proved 
  

   conclusively, 
  however, 
  that 
  the 
  crystalline 
  rocks 
  had 
  been 
  meta- 
  

   morphosed 
  and 
  subjected 
  to 
  vast 
  denudation 
  before 
  the 
  Gaisa 
  epoch 
  

   commenced, 
  the 
  relations 
  of 
  the 
  two 
  systems 
  rather 
  forcibly 
  bringing 
  

   to 
  my 
  mind 
  those 
  of 
  the 
  Carboniferous 
  strata 
  to 
  highly-altered 
  rocks 
  

   as 
  seen 
  in 
  parts 
  of 
  our 
  own 
  country. 
  Yiewed 
  from 
  the 
  hillside 
  above, 
  

   the 
  boundary-line 
  between 
  the 
  two 
  was 
  clearly 
  marked 
  out 
  in 
  its 
  

   westward 
  course 
  towards 
  the 
  Tana 
  River 
  by 
  the 
  same 
  scenic 
  features 
  

   as 
  those 
  which 
  distinguish 
  the 
  two 
  sides 
  of 
  the 
  Yaranger 
  Fiord. 
  

  

  These 
  basement-beds 
  of 
  the 
  Gaisa 
  system 
  pass 
  up, 
  in 
  a 
  few 
  feet, 
  

   into 
  well-bedded 
  quartz-grits, 
  often 
  containing 
  quartz-pebbles, 
  and 
  

   interstratified 
  with 
  red 
  shales. 
  Strata 
  of 
  this 
  character 
  form 
  the 
  

   promontory 
  which 
  separates 
  the 
  two 
  arms 
  of 
  the 
  Yaranger 
  Fiord, 
  

   the 
  grits 
  giving 
  rise 
  to 
  frequent 
  little 
  scarps 
  separated 
  by 
  swampy 
  

   hollows, 
  in 
  which 
  disintegrated 
  shale 
  is 
  occasionally 
  visible. 
  They 
  

   dip 
  at 
  a 
  gentle 
  angle 
  northward, 
  and 
  in 
  proceeding 
  in 
  that 
  

   direction, 
  and 
  presumably 
  therefore 
  ascending 
  in 
  the 
  series, 
  we 
  

   noticed 
  less 
  conglomerate, 
  but 
  more 
  shale 
  and 
  sandstone, 
  frequently 
  

   of 
  a 
  red 
  or 
  purplish 
  tinge. 
  The 
  fine 
  section 
  in 
  the 
  precipitous 
  ravine 
  

   of 
  the 
  Haeskelv, 
  2 
  miles 
  east 
  of 
  JSTyborg, 
  shows 
  upwards 
  of 
  

   100 
  feet 
  of 
  alternations 
  of 
  grey 
  grits 
  and 
  red 
  or 
  mottled 
  shales, 
  in 
  

   beds 
  of 
  1 
  to 
  2 
  feet 
  in 
  thickness. 
  The 
  strata 
  here 
  have 
  been 
  thrown 
  

   into 
  sharp 
  folds 
  running 
  E.N.E., 
  a 
  somewhat 
  unusual 
  feature 
  in 
  this 
  

   neighbourhood, 
  for 
  the 
  Gaisa 
  Beds, 
  wherever 
  else 
  I 
  saw 
  them, 
  

   showed 
  but 
  little 
  disturbance. 
  2 
  

  

  At 
  Yadso 
  a 
  low 
  cliff, 
  extending 
  for 
  some 
  distance 
  westward, 
  

  

  1 
  ' 
  Geologisk 
  Kart 
  over 
  det 
  nordlige 
  Norge, 
  udarbeidet 
  efter 
  Foranstaltning 
  af 
  

   den 
  Kongelige 
  NorskeBegjerings 
  Departement 
  for 
  det 
  Indre,' 
  Kristiania, 
  1866- 
  

   1879. 
  I 
  am 
  indebted 
  to 
  Mr. 
  W. 
  H. 
  Hudleston 
  for 
  the 
  interesting 
  fact 
  that 
  the 
  

   position 
  of 
  the 
  boundary 
  was 
  correctly 
  fixed 
  by 
  Keilhau 
  more 
  than 
  50 
  years 
  

   ago. 
  

  

  2 
  The 
  section 
  is 
  figured 
  in 
  Beusch's 
  ' 
  Geology 
  of 
  Northern 
  Norway 
  ' 
  1891, 
  

   p. 
  35. 
  

  

  i2 
  

  

  