﻿CKTSTALL1NE 
  EOCKS 
  OF 
  THE 
  ALPS. 
  89" 
  

  

  the 
  " 
  kalkhaltiger 
  Schiefer" 
  full 
  of 
  a 
  lead-coloured 
  mica, 
  and 
  so 
  fissile 
  

   that 
  it 
  is 
  almost 
  impossible 
  to 
  carry 
  away 
  a 
  specimen. 
  This 
  rock 
  is 
  

   least 
  micaceous 
  in 
  its 
  upper 
  part 
  *. 
  Higher 
  up, 
  after 
  crossing 
  the 
  

   stream 
  by 
  a 
  bridge, 
  another 
  chloritic 
  schist 
  is 
  found. 
  

  

  Further 
  on 
  (approaching 
  Griiben) 
  occurs 
  a 
  rather 
  massive 
  pinkish 
  

   and 
  greenish 
  rock, 
  perhaps 
  a 
  syenite, 
  modified 
  by 
  subsequent 
  pres- 
  

   sure 
  ; 
  but 
  beyond 
  this 
  is 
  a 
  banded 
  chloritic 
  schist. 
  Its 
  strike 
  is 
  

   slightly 
  N. 
  of 
  E., 
  but 
  its 
  dip 
  is 
  on 
  the 
  northern 
  side. 
  But 
  after 
  

   passing 
  Erossnitz, 
  we 
  again 
  find 
  well-banded 
  calc-mica-schist 
  with 
  

   the 
  same 
  strike, 
  but 
  a 
  southerly 
  dip, 
  the 
  two 
  foliations 
  being 
  coinci- 
  

   dent. 
  Before 
  long, 
  however, 
  the 
  character 
  of 
  the 
  rock 
  changes, 
  for 
  

   the 
  path 
  crosses 
  rather 
  silvery 
  mica-schists 
  and 
  quartz-mica-schists 
  r 
  

   which 
  dip 
  at 
  about 
  50° 
  to 
  S.S.E., 
  and 
  in 
  the 
  debris, 
  brought 
  down 
  by 
  

   lateral 
  ravines, 
  silvery 
  mica-schist 
  with 
  occasional 
  garnets 
  andgneisses 
  

   of 
  "Lepontine 
  " 
  type 
  occur. 
  Beyond 
  a 
  mill 
  (?Landeggsage) 
  the 
  path 
  

   mounts 
  a 
  rocky 
  barrier, 
  which 
  consists 
  of 
  a 
  rather 
  fine-grained 
  mica- 
  

   ceous 
  gneiss 
  of 
  the 
  latter 
  type 
  (Appendix, 
  p. 
  105) 
  ; 
  but 
  in 
  a 
  more 
  open 
  

   part 
  of 
  the 
  glen, 
  as 
  the 
  " 
  Tauernhaus 
  " 
  is 
  approached, 
  characteristic 
  

   " 
  Tcalkhaltiger 
  Schiefer 
  " 
  is 
  again 
  found, 
  with 
  a 
  S.E. 
  dip. 
  The 
  gneiss 
  

   below 
  seems 
  to 
  dip 
  in 
  this 
  direction, 
  so 
  that 
  the 
  strike 
  appears 
  to 
  

   have 
  gradually 
  changed 
  from 
  nearly 
  W. 
  and 
  E. 
  to 
  S.W. 
  and 
  N.E. 
  

  

  In 
  the 
  Gschlossthal, 
  as 
  the 
  glen 
  immediately 
  above 
  the 
  Tauern- 
  

   haus 
  is 
  called, 
  and 
  in 
  the 
  range 
  immediately 
  north 
  of 
  it 
  — 
  the 
  water- 
  

   shed 
  of 
  the 
  Tyrol 
  Alps 
  — 
  the 
  Central 
  Gneiss 
  of 
  Yon 
  Hauer 
  crops 
  out* 
  

   The 
  most 
  casual 
  observer 
  cannot 
  fail 
  to 
  note 
  the 
  contrast 
  between 
  the 
  

   shivery 
  and 
  comparatively 
  soft 
  schists 
  of 
  the 
  " 
  Thonglimmerschiefer 
  " 
  

   series 
  and 
  the 
  hard, 
  strongly 
  crystalline 
  rocks 
  of 
  the 
  latter. 
  These 
  

   we 
  studied, 
  not 
  only 
  in 
  crossing 
  the 
  Yelber-Tauern 
  pass, 
  but 
  also 
  

   during 
  our 
  ascent 
  of 
  the 
  Gross 
  Yenediger. 
  The 
  minute 
  details 
  have 
  

   no 
  particular 
  interest, 
  so 
  it 
  may 
  suffice 
  to 
  say 
  that 
  banded 
  gneisses 
  

   occur 
  generally 
  in 
  the 
  lower 
  parts 
  of 
  the 
  mountain 
  ; 
  these, 
  whether 
  

   micaceous 
  or 
  hornblendic 
  — 
  and 
  they 
  pass 
  sometimes 
  almost 
  into 
  

   strong 
  hornblende-schists 
  — 
  recalled 
  to 
  my 
  mind 
  certain 
  members, 
  

   but 
  not 
  the 
  most 
  coarsely 
  crystalline, 
  of 
  the 
  Hebridean 
  of 
  Scotland 
  

   and 
  the 
  Laurentian 
  of 
  Canada, 
  which 
  are 
  often 
  distinctly 
  modified 
  

   by 
  subsequent 
  pressure. 
  We 
  also 
  find 
  slightly 
  foliated, 
  coarsely 
  

   crystalline, 
  granitoid 
  rock 
  with 
  nodes 
  or 
  enclosures, 
  — 
  probably 
  a 
  

   granite 
  subsequently 
  modified, 
  the 
  upper 
  part 
  of 
  the 
  mountain 
  chiefly 
  

   consisting 
  of 
  the 
  latter 
  rock 
  f. 
  But 
  in 
  the 
  debris 
  brought 
  down 
  by 
  

   torrents 
  and 
  moraines 
  from 
  the 
  right 
  bank 
  of 
  the 
  Schlattenkees, 
  that 
  

   is 
  to 
  say, 
  from 
  the 
  western 
  part 
  of 
  the 
  chain 
  which 
  forms 
  the 
  

   southern 
  boundary 
  of 
  the 
  Gschlossthal, 
  there 
  is 
  a 
  good 
  deal 
  of 
  mica- 
  

   gneiss 
  and 
  schist 
  (with 
  muscovite 
  and 
  biotite), 
  recalling 
  the 
  rocks 
  

   seen 
  about 
  Landeggsage, 
  which 
  seem 
  to 
  strike 
  towards 
  this 
  part 
  of 
  

  

  * 
  The 
  association 
  of 
  the 
  two 
  rocks 
  just 
  described 
  was 
  confirmed 
  by 
  returning 
  

   to 
  Windisch-Matrei 
  by 
  the 
  left 
  bank 
  of 
  the 
  river, 
  though 
  the 
  rocks 
  are 
  less 
  per- 
  

   fectly 
  exposed 
  along 
  this 
  path. 
  

  

  t 
  It 
  abounds 
  on 
  the 
  ascent 
  to 
  the 
  Pragerhiitte, 
  and 
  I 
  do 
  not 
  remember 
  ob- 
  

   serving 
  any 
  rocks 
  except 
  these 
  between 
  the 
  hut 
  (8,700 
  ft.) 
  and 
  the 
  summit 
  

   (12,051 
  ft.) 
  ; 
  but 
  the 
  greater 
  part 
  of 
  the 
  ascent 
  is 
  over 
  snow 
  and 
  ice. 
  

  

  