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MISS  OGILYIE  OX  THE  WEXGEX  AXD 
[Feb.  1893, 
are  thrown  into  a  series  of  large  folds,  which  prove  the  presence  at 
one  time  of  important  strain  between  the  two  large  systems — that  of 
the  older  Trias  of  Prags  and  the  Sari  Alp,  and  that  of  the  younger 
Trias  of  the  Diirrenstein  massif.  The  Sari  Kofele  Dolomite  dis¬ 
appears  finally  in  Kirchenschroffen,  and  the  Wengen  and  St.  Cassian 
strata  of  the  Schafriedl  system  come  in  contact,  very  little  north  of 
Briiekele,  with  the  Wengen  and  St.  Cassian  strata  of  the  Diirrenstein 
system. 
If  now  both  Kirchenschroffen  and  Heimwald  Kofi  are  Wengen 
Dolomite,  we  have  (according  to  the  view  which  accepts  for  this 
district  a  gradual  transition  of  non-dolomitic  into  dolomitic  strata) 
again  the  following  conformable  succession  between  the  Diirrenstein 
and  the  Kameriod  Wiesen  : — 
Locality. 
Nature  of  Bock. 
Probable  age. 
Diirrenstein.  j 
Dolomitic. 
Aon-dolomitic. 
■  St.  Cassian. 
Kirchenschroffen. 
Dolomitic. 
Schafriedl. 
Xon-dolomitic. 
-  Wengen. 
c 
Heimwald  Kofi. 
Dolomitic. 
Kameriod  Wesen. 
Aon-dolomitic, 
Buchenstein  and  older  Trias. 
But  below  Kirchenschroffen  the  non-dolomitic  strata  are  St. 
Cassian  with  beds  of  Cipit  Limestone,  and  they  are  the  same 
beds  as  those  which  apparently  follow  conformably  above  the  dolo¬ 
mite  of  Sari  Kofele  and  below  the  dolomite  of  the  Diirrenstein  ; 
hence,  even  if  we  accept  the  view  of  facies-developments,  we  must 
rather  consider  the  Kirchenschroffen  and  Sari  Kofele  Dolomite  as 
a  dolomite-bed  in  the  St.  Cassian  marls,  such  as  we  have  at 
the  Pdchthofen  Pdff,  in  marls  of  the  same  age  below  Sett  Sass. 
From  the  already-mentioned  tectonic  features  and  the  marked 
disturbance  and  folding  of  the  strata  on  Schafriedl,  I  find  it. much 
harder  to  explain  the  dolomite-rock  of  Kirchenschroffen  and  Sari 
Kofele  as  ‘St.  Cassian  Dolomite’  than  the  Pdchthofen  Pdff;  the 
latter  is  a  bed  of  dolomite  which  is  seen  to  thin  out  gradually  and 
regularlv  in  St.  Cassian  marls  and  limestones.  Again,  the  non- 
dolomitic  strata  above  the  Heimwald  Kofi  are  present  in  normal 
thickness  ;  on  the  Sari  Alp  the  succession  of  non-dolomitic  rock 
ends  with  Wengen  Beds,  but  the  surface  here  has  been  deeply 
eroded. 
So  many  difficulties  having  suggested  themselves  to  me  in  accepting 
the  facies- development  as  a  complete  explanation  of  the  facts  which 
I  observed,  another  view  may  be  stated  as  a  possible  explana¬ 
tion. 
When  examining  the  dolomite-rock  at  Kockboden  I  found  that 
GyroporeTla  pauciforata ,  the  typical  fossil  of  the  Mendola  Dolomite 
