﻿1864.] 
  

  

  BIGSBY 
  MISSING 
  SEDIMENTARY 
  FORMATIONS. 
  

  

  203 
  

  

  opjuijn 
  

  

  .2 
  © 
  ^ 
  

  

  Tertiary 
  strata, 
  which 
  rest 
  

   directly 
  on 
  Lower 
  Lias 
  ; 
  and 
  

   then 
  occur 
  successively, 
  in 
  

   descending 
  order, 
  Upper 
  and 
  

   Lower 
  Trias, 
  Carboniferous 
  

   schists 
  (diorites 
  intercalated), 
  

   conglomerates, 
  mica-slate, 
  

   and, 
  finally, 
  gneiss. 
  It 
  is 
  

   occasionally 
  seen 
  that 
  the 
  

   Tertiary 
  beds* 
  of 
  the 
  great 
  

   plains 
  of 
  Prussia, 
  which 
  stretch 
  

   uninterruptedly 
  from 
  the 
  

   mountains 
  of 
  Saxony, 
  Magde- 
  

   burg, 
  and 
  Brunswick, 
  north- 
  

   wards 
  to 
  the 
  sea, 
  repose 
  on 
  the 
  

   Muschelkalk. 
  

  

  Sir 
  R. 
  I. 
  Murchisonf 
  dis- 
  

   covered 
  that 
  on 
  the 
  northern 
  

   edge 
  of 
  the 
  Bavarian 
  and 
  

   adjacent 
  Alps, 
  the 
  upper 
  part 
  

   of 
  the 
  Eocene 
  formation 
  (to- 
  

   gether 
  with 
  some 
  Miocene 
  

   strata) 
  was 
  either 
  never 
  de- 
  

   posited 
  or 
  had 
  been 
  swept 
  

   away 
  ; 
  and 
  he 
  justly 
  con- 
  

   siders 
  their 
  absence 
  an 
  im- 
  

   portant 
  fact. 
  The 
  Tertiaries 
  

   of 
  these 
  countries 
  have 
  no 
  

   connexion 
  with 
  the 
  Chalk. 
  

  

  General 
  Delia 
  Marmora 
  £ 
  

   met, 
  near 
  Pianedda 
  and 
  Go- 
  

   nessa, 
  as 
  well 
  as 
  on 
  Mount 
  

   Cardiga, 
  in 
  Sardinia, 
  as 
  also 
  

   at 
  Goni 
  and 
  Terra 
  Segada, 
  in 
  

   the 
  same 
  island, 
  with 
  Num- 
  

   mulite-limestones 
  and 
  sand- 
  

   stones 
  incumbent 
  horizontally 
  

   on 
  the 
  upturned 
  edges 
  of 
  

   Silurian 
  schists. 
  

  

  The 
  Lower 
  Eocene 
  §, 
  with 
  

   Nummulites, 
  forms 
  the 
  roof 
  

  

  * 
  Histoire 
  des 
  Progres 
  de 
  la 
  

   Geologie, 
  vol. 
  viii. 
  p. 
  522. 
  

  

  t 
  Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol. 
  v. 
  

   pp. 
  227, 
  228. 
  

  

  I 
  Voyage 
  en 
  Sardaigne, 
  vol. 
  i. 
  

   pp. 
  32, 
  228, 
  233. 
  See 
  also 
  Lyell's 
  

   ' 
  Principles,' 
  p. 
  187 
  (on 
  the 
  Pyre- 
  

   nees). 
  

  

  § 
  D'Orbigny, 
  'CoursdePaleont' 
  

   vol. 
  ii. 
  p. 
  701 
  . 
  

  

  