﻿LIPOLD 
  LEAD- 
  AND 
  ZINC-ORES 
  OF 
  CARINTHIA. 
  6 
  

  

  On 
  the 
  Foraminifera 
  of 
  the 
  Vienna 
  Basin. 
  By 
  Herr 
  Karrer. 
  

  

  [Proceed. 
  Imp. 
  Acad. 
  Vienna, 
  June 
  18, 
  1863.] 
  

  

  The 
  sand 
  and 
  plastic 
  clay 
  (" 
  Tegel") 
  strata 
  of 
  this 
  Basin 
  include 
  a 
  

   peculiar, 
  well- 
  characterized, 
  and 
  independent 
  Foraminiferan 
  fauna. 
  

   Although 
  less 
  rich 
  than 
  the 
  more 
  ancient 
  and 
  strictly 
  marine 
  fauna, 
  

   it 
  is 
  remarkable 
  for 
  the 
  continuity 
  of 
  its 
  appearance 
  and 
  the 
  immense 
  

   number 
  of 
  individuals 
  sometimes 
  composing 
  it. 
  

  

  The 
  brackish 
  -water 
  Foraminifera 
  may 
  be 
  said 
  to 
  be 
  a 
  selection 
  

   from 
  those 
  in 
  the 
  marine 
  deposits, 
  and 
  they 
  neither 
  include 
  any 
  

   new 
  generic 
  nor 
  even 
  specific 
  types. 
  The 
  greater 
  portion 
  of 
  them 
  

   belong 
  to 
  the 
  most 
  minute 
  and 
  least 
  conspicuous 
  groups 
  ; 
  but 
  their 
  

   chief 
  representatives 
  (Nonionina, 
  Polystomella, 
  and 
  Bosalina) 
  are 
  

   members 
  of 
  families 
  characterized 
  by 
  the 
  complicated 
  structure 
  of 
  

   their 
  shells. 
  As 
  a 
  whole, 
  the 
  fauna 
  in 
  question 
  stands 
  next 
  to 
  that 
  

   of 
  the 
  Nullipore-marls. 
  The 
  bottom 
  of 
  the 
  Tertiary 
  sea 
  having 
  been 
  

   upheaved 
  previously 
  to 
  the 
  appearance 
  of 
  these 
  Foraminifera, 
  they 
  

   could 
  not 
  have 
  lived 
  at 
  considerable 
  depths. 
  Consequently 
  deep- 
  

   sea 
  forms 
  are 
  not 
  found 
  among 
  them, 
  although 
  there 
  are 
  specific 
  

   differences 
  essentially 
  connected 
  with 
  the 
  variations 
  of 
  level. 
  The 
  

   plastic 
  clay 
  of 
  Hernials, 
  corresponding 
  to 
  the 
  deeper 
  level 
  of 
  brack- 
  

   ish 
  deposits, 
  is 
  characterized 
  by 
  the 
  presence 
  of 
  Triloculince, 
  Quin- 
  

   queloculince, 
  Nonionince, 
  and 
  Rosalince, 
  while 
  the 
  Cerithium-sands 
  

   deposited 
  at 
  lower 
  levels 
  nearer 
  to 
  the 
  shore 
  contain 
  immense 
  accu- 
  

   mulations 
  of 
  Polystornellce. 
  The 
  Foraminiferan 
  fauna 
  runs, 
  there- 
  

   fore, 
  in 
  a 
  parallel 
  with 
  the 
  long-known 
  Molluscan 
  fauna 
  of 
  the 
  

   Viennese 
  brackish 
  Tertiaries. 
  [Count 
  M.] 
  

  

  On 
  the 
  Lead- 
  and 
  Zinc-ores 
  of 
  Carinthia. 
  By 
  Herr 
  Lipoid. 
  

  

  [Proceed. 
  Imp. 
  Geol. 
  Instit. 
  Vienna, 
  April 
  7, 
  1863.] 
  

  

  According 
  to 
  the 
  latest 
  investigations, 
  the 
  strata 
  containing 
  deposits 
  

   of 
  these 
  ores 
  belong 
  to 
  the 
  Hallstatt 
  strata, 
  and 
  not, 
  as 
  has 
  hitherto 
  

   been 
  believed 
  (chiefly 
  on 
  account 
  of 
  the 
  occurrence 
  in 
  them 
  of 
  Me- 
  

   galodus 
  triqueter), 
  to 
  the 
  Lower 
  Liassic 
  Dachstein-strata, 
  which, 
  

   indeed, 
  could 
  only 
  be 
  accounted 
  for 
  by 
  supposing 
  enormous 
  disturb- 
  

   ances 
  and 
  dislocations 
  to 
  have 
  taken 
  place. 
  It 
  may 
  be 
  remarked 
  

   that 
  the 
  specimens 
  of 
  Megalodus 
  triqueter 
  from 
  the 
  metalliferous 
  

   strata 
  of 
  Bleiberg 
  are 
  one 
  inch, 
  and 
  less, 
  in 
  diameter, 
  while 
  those 
  from 
  

   the 
  genuine 
  Dachstein-limestone 
  attain 
  a 
  size 
  of 
  from 
  two 
  to 
  three 
  

   inches, 
  or 
  more, 
  in 
  diameter. 
  It 
  may 
  be 
  inferred 
  that 
  the 
  species 
  in 
  

   question 
  appeared 
  first 
  during 
  the 
  Hallstatt 
  (Upper 
  Triassic) 
  period, 
  

   but 
  became 
  fully 
  developed 
  only 
  in 
  the 
  Dachstein 
  (lowermost 
  Liassic) 
  

   period. 
  The 
  deposits 
  of 
  lead- 
  and 
  zinc-ores 
  in 
  Carinthia 
  are 
  either 
  

   coeval 
  with 
  the 
  Hallstatt 
  strata 
  including 
  them, 
  or 
  secondary, 
  having 
  

   been 
  formed 
  by 
  chemical 
  or 
  mechanical 
  agents 
  at 
  the 
  expense 
  of 
  the 
  

   pre-existing 
  interstratified 
  deposits. 
  These 
  secondary 
  deposits 
  appear 
  

   in 
  the 
  form 
  of 
  veins 
  — 
  fragments 
  of 
  ores 
  and 
  limestone, 
  — 
  mixed 
  with 
  a 
  

  

  