Yol.  49.] 
THE  WEN GEN  AND  ST.  CASSIAN  STEATA. 
71 
crushed  and  folded  between  fault-lines  both  north  and  south.  The 
Lung  Valley  outcrop  is  less  disturbed,  the  Mendola  Dolomite  of 
Lung  Kofi  being  merely  the  continuation  of  the  Alwartstein  system 
thrust  forward. 
On  the  southern  side  of  Mesner  Kofi  the  Buchenstein  and  Wengen 
Beds  on  the  Sari  Alp  are  again  faulted  down  below  Sari  Kofele. 
The  strata  of  all  three  systems,  Lung  Kofi,  Mesner  Kod,  and  Sari 
Kofele,  have  a  north-easterly  strike  and  dip  to  the  south-east. 
The  same  transverse  fault  which  is  observed  in  the  Lungthal  may  be 
followed  southward  between  the  Kameriod  Wiesen  on  the  downthrow 
side  and  the  Sari  Alp  and  Mesner  Kofi  succession  on  the  upthrow. 
From  Lung  Kofi  the  outcrop  of  Mendola  Dolomite  and  Lower 
Muschelkalk  is  continued  eastward  over  Sari  Kod  and  Sari  Brand 
to  the  Toblach  Valley.  On  both  sides  of  the  Ampezzo  road,  from 
Lake  Toblach  to  Schluderbach,  dolomite  is  present,  nowhere  inter¬ 
rupted  by  marly  strata.  The  dolomite-rock  of  Sari  Kod  and  Sari 
Brand  strikes  north-east  and  dips  south-east:  this  changes,  how¬ 
ever,  south  of  the  Sari  Bach,  for  the  Mendola  Dolomite  -which 
forms  the  lower  part  of  Rockboden  strikes  north-west  and  dips 
south-west. 
Lastly,  wedged  in  between  Sari  Kod,  Sari  Brand,  Hockboden, 
Kasamiitz,  and  Mesner  Kod,  we  dnd  Buchenstein  and  Wengen 
strata  on  the  Sari  Alp,  and  they  have  much  the  same  tectonic 
relations  to  the  Mendola  Dolomite  around  them  as  the  outcrop 
between  Lung  Kod  and  Mesner  Kod.  Here,  however,  the  strata 
are  thrown  down  by  a  triangular  break. 
Summarizing  these  observations,  we  dnd  therefore  the  system  of 
older  beds  from  Prags  to  the  Toblach  Valley  broken  up  into  three 
main  sub-systems  by  two  transverse  faults  : — 
a. 
Alwartstein. 
Kameriod  Wiesen. 
b. 
Lung  Kod. 
Mesner  Kod. 
Sari  Kofele — Sari  Alp. 
c. 
Sari  Kod. 
Sari  Brand. 
Nockbodeu. 
Sari  Brand  is  somewhat  sunk  from  Sari  Kod  towards  the  Toblach 
Valley  ;  the  fault  may  be  followed  farther  north  in  the  Werfen  Beds 
exposed  in  the  Troger  Bach. 
Looking  southward  from  the  Sari  Alp  beyond  the  low  dolomite 
escarpment  which  extends  (although  in  some  places  more  or  less 
eroded)  from  Sari  Kofele  to  Hockboden,  the  view  is  entirely  shut  in 
by  the  Diirrenstein  massif.  This  massif  is  of  Schlern  Dolomite  rock 
and  lies  conformably  upon  the  St.  Cassian  strata  exposed  on  the 
Flodiger  Wiese.  The  St.  Cassian  strata  of  the  Flodiger  Wiese  rest 
apparently  conformably  upon  the  dolomite-rock  of  Sari  Kofele  and 
of  Kasamiitz.  Regarding  the  dolomite  here  as  Mendola  Dolomite, 
the  following  section  is  obtained  (in  descending  order) : — 
’  Schlern  Dolomite  of  the  Diirrenstein. 
«  St.  Cassian  strata  of  the  Flodiger  Wiese. 
Mendola  Dolomite  of  Sari  Kofele  and  Kasamiitz. 
